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Question Toshiba 52HM84 Ballast Replacement with large pics ( AVS Forum Rear Projection Units )
Updated: 2009-01-15 03:05:13 (51)
Toshiba 52HM84 Ballast Replacement with large pics

First, many thanks to those of you who have done this before me and posted elsewhere. There was a request for pics of the ballast board install, so here it is.

FULL DISCLOSURE AND WARNING: YOU ARE ON YOUR OWN AND I WARRANT NOTHING FROM THESE PROCEDURES. I AM NOT A TV TECH. THERE ARE SOME VERY HIGH VOLTAGES IN THE BACK OF A TV BECAUSE OF THE LARGE CAPACITORS. BE CAREFUL. THERE ARE ALSO MANY DELICATE CABLES AND CONNECTORS IN THE BACK OF A DLP TV. PROCEED AT YOUR OWN RISK! IF YOU ARE UNCOMFORTABLE WITH ANY OF THE STEPS, CONTACT A TV TECHNICIAN IN YOUR AREA TO DO IT!

You will need:
1. A slightly long standard head Philips screwdriver.
2. A leatherman or small pair of pliers.
3. The Toshiba service manual. Refer to it often if you get lost. - download it here.
4. The ballast board (Toshiba Part Number: 23122468). I got mine from Conn's in Flordia here.
5. Some tape or a marker to label some of the cables so you don't forget what went where.
6. Patience. Lots of it.

The Steps

1. UNPLUG THE TV! Put the TV somewhere so that you can easily get to the back of it. You'll need at least 3 ft of room behind the TV. REMOVE THE LAMP ASSEMBLY NOW.

2. Remove all of the screws on the lower part of the TV. Set the cover aside. It should look like this:



3. To get an idea of where we're going, as you look at the back of the TV, just behind the fan and lamp assembly is the ballast board, looks like this:



4. Next, remove the screws from the silver brace arm in the middle and the bronze screws that hold the light engine assembly. This brace is attached to the ribbon cable by a Zip tie; you do not have to cut the Zip tie if you don't want to. Refer to the service manual if the pic below doesn't show the screws clearly, but it will be obvious when you are looking at the "light engine sled".



5. Remove the bronze screw holding the plastic shield that angles down to the lamp. This screw is kind of hard to see just looking at the back of the TV, it is located up and above the ribbon cable attached to the back AV board.



6. Using a small pair of pliers, squeeze the plastic nipples in and push the cable hangers out of the plastic shield. Remove the shield carefully from the back of the TV and set aside.



7. Slowly and very carefully, remove the copper ribbon cable as shown. This copper ribbon cable was the hardest thing to put back in during reassembly, I kid you not. I hate that ribbon cable with all of my soul. Next, remove the yellow, blue, and red connectors as shown. If you forget where they went, the connectors are different lengths and only go to one and only one receptacle.



8. Slowly and carefully, pull out the light engine assembly. There are 2 yellow leads that power the lamp assembly that you can remove if needed. To remove them, slide the rubber footing off, and you will see a very small clip, push the clip back while pulling on the lead and it will come off. If you do take the leads off, be sure to label them with a marker or some tape. Mine were quite stubborn in letting go (I didn't see the clips under the rubber footing before this posted), so I left them on. If you do leave them on, be carefull of the stress on the cable going around the lens assembly. I removed the cables from the plastic do-hickey holding onto them and moved the yellow cables to the front of the lens assembly.



9. Next, slowly pull out the light engine sled and turn it so that you have access to the ballast assembly, like so:



10. Noticing how filthy your ballast board probably is , remove the two screws holding the ballast board.



11. Now, remove the 2 connectors attached to the ballast board like so:



12. Next, gently push the plastic tabs holding down the ballast board to the light engine assembly and gently push up the ballast board to loosen it from the plastic tabs grip. There are two other tabs on the other side. Now you'll now be able to remove the ballast assembly entirely to install your new board.



13. Now, on the other side of the ballast assembly is the lamp connector. Remove the screws as shown.



14. Gently turn the lamp connector towards you to remove it; notice the orientation of the connector so you install it correctly when you put the new board in.



15. Now, install your new board and put everything back together in reverse order. This would also be a good time to take some compressed air and blow out all of the dust in there. Take your time during reassembly and be very, very, very carefull connecting everyting back together.

16. Be sure to put the back cover on, and re-install the lamp assembly before connecting your inputs and powering back on.

17. That's it! If you did everything carefully enough, you should be enjoying your Toshiba again and just saved about $350! Congrats!

Answers: Toshiba 52HM84 Ballast Replacement with large pics ( AVS Forum Rear Projection Units )
Toshiba 52HM84 Ballast Replacement with large pics

Wow, excellent post coronad0. Tremendous job documenting the steps. I have the 57HM167, but expect it to be at least somewhat similar. This will come in handy if someday I need to replace the ballast.

koan

Toshiba 52HM84 Ballast Replacement with large pics

Wow ..us 52hm84 owners really got ripped on these things. I will say this, I do love the picture. With HD and blu ray this thing is awsome!
However, I have had for 3 years and have replaced 3 bulbs and now..I'm taking on the ballast. I called Toshiba and got quite the story. It would not surprise me to see a class action on this one someday soon.
This post will help greatly.
I wish you lived near me (southwest FL)lol.
I think i can handle it though.
I got some big hands and i wear a size 16 ring, so this will be a delicate operation for me.

I just wish my ballast was getting here before sunday so i could see my football games on my big screen!

Thanks for the awsome post.

Mike

Flaking

Toshiba 52HM84 Ballast Replacement with large pics

Well got my part in this afternoon. Wasnt as bad as I thought it would be.
Thanks to this post it was alot easier.
I agree that copper ribbon was a bear to try and get in right, very delicate.
Very dusty inside I took care of that.
Took about 1-1/2 hr with a 3 year old running around and me stopping every once and a while to double check and get a drink.
but when I got it all hooked back up and turned it on...I was so proud of my work and that i saved almost 500 bucks.
I do notice that my picture looks like it is a little crooked. Like I have Direct tv, and if you bring up the info bar up top, it is about a 1/4" lower on the right side then the left.
Is there a fix for this issue in the service menu, or do i have to adjust something inside? Or should I leave it alone? If i had to dig back inside I think I'd leave it alone.
Anyhow, thatnks again for your great post.

Mike

Flaking

Toshiba 52HM84 Ballast Replacement with large pics

BLESS YOUR SOUL coronad0!!!!

We had some crazy tech from a Toshiba dealer fiddle with it twice for a total of 2 hrs and he didn't seem to know what he was doing-who tried to tell us it was the whole light engine that needed to be replaced!!! So we took it into our own hands and thanks to YOU -it worked like a charm!!! It took about 1.5hrs (trying to be gentle) and your instructions were AMAZING!!!!

This was our last ditch attempt before getting a new TV - YOU ROCK!!!

THANK YOU THANK YOU THANK YOU!!!!

Chrishy

Toshiba 52HM84 Ballast Replacement with large pics

Fantastic !

you can add me to your list of beneficiaries from this fix. Ordered the part, followed your instructions, and it all worked great.

a huge thank you to all of you geniuses !

souzot

Toshiba 52HM84 Ballast Replacement with large pics

Thanks for posting this very useful ballast replacement thread - just one thing I don't see the pics in the post - is it a browser thing or ?? - if at all possible could you send me a doc with the pics included - my ballast needs replaced but I would feel better if I had pics to follow

Thanks

mtom5

Toshiba 52HM84 Ballast Replacement with large pics

I'm pretty sure this is what I am needing to do for my tv. But I'm not 100% sure.

Here is what my tv is doing.
About 75% of the time when I go to turn the tv on, it begins to start up and I hear the sound from whatever input the tv is set to. However, the green light begins to blink 9 times while the red light stays solid. The tv then restarts and most of the time it comes up after that restart. The screen appears to take a little longer to brighten up than it used to (about 45 seconds or so) and from there on the picture looks as good as ever. Occasionally the tv will have to restart a 2nd time before it comes on. I'd say that is happening only about 5% of the time.

So is this what I need to do to attempt to fix it? Thanks!

*Quick edit here: Sometimes the tv does start up on the first try.

smergs

Toshiba 52HM84 Ballast Replacement with large pics

So, for the past 3 days or so now, my tv has been turning on the first time every time. I don't know what happened but I hope it continues to work like it has been.

However, still wondering if the symptoms that I was seeing before are indeed a sign that the Ballast needs to be replaced.

smergs

Toshiba 52HM84 Ballast Replacement with large pics

Anyone?

smergs

Toshiba 52HM84 Ballast Replacement with large pics

Thanks for the awesome post. I have been without my 62" now for a week as tomorrow was the first available service call that I could get. The tech was able to stop by tonight and took a look at the tv. He said that the problem is either the ballast or the light engine. It is doing the same thing as noted above, the red light is solid and the green light flashes 9 times and then restarts and goes through the whole thing again. The lamp was replaced 7 months ago and so I purchased a new one last week but that did not fix the issue, luckily I can take it back.

From what I have read it sounds as though if it is the ballast that has died I would not hear the clicking sound when I turn it on, however I do. I hear the fans kick into high too. What I am affraid of is putting money into the ballast just to find out that it isn't the problem. Anyone have any ideas on how I can diagnose whether the ballast is in fact the issue?

Thanks

Dave

Hudsy

Toshiba 52HM84 Ballast Replacement with large pics

Ok, it looks like my TV is finally going to require the Ballast replacement to work again. When I'm lucky it comes on but I realize that soon it probably won't even come on anymore.

My last question (hopefully). What is the difference between part #23122468 and part #23122468P? It looks like they are probably the same thing but everywhere that I've seen online shows that the one with the P on the end is cheaper. Is there any difference? I'm hoping to order the part today so hopefully I'll get a quick reply on this. Thanks in advance!

smergs

Toshiba 52HM84 Ballast Replacement with large pics

I called a local service centre and asked them if they happened to stock the replacement ballasts. The reply I received was no we usually fix them. There is a resistor on the board that should read 1000ohms. I pulled the ballast out and tested it and sure enough it was open. I took it into him and he confirmed that it was open. Within 5 minutes he replaced the resistor. I took it home and put everything back together with hopes of having TV again. Unfortunately that was not the only broken piece. I called him and he said that if changing that resistor didn't fix the problem then it was the light engine.

The TV was put at the side of the road and I am now in search of a new plasma. Never to own another Toshiba.

Hudsy

Toshiba 52HM84 Ballast Replacement with large pics

I'm still waiting to hear from anyone if the symptoms I am having sound like a lamp ballast issue. Does anyone know for sure? Thanks!

smergs

Toshiba 52HM84 Ballast Replacement with large pics

Quote:
Originally Posted by smergs
Ok, it looks like my TV is finally going to require the Ballast replacement to work again. When I'm lucky it comes on but I realize that soon it probably won't even come on anymore.

My last question (hopefully). What is the difference between part #23122468 and part #23122468P? It looks like they are probably the same thing but everywhere that I've seen online shows that the one with the P on the end is cheaper. Is there any difference? I'm hoping to order the part today so hopefully I'll get a quick reply on this. Thanks in advance!
Sounds like a ballast problem to me. I just replaced mine after symptoms similar to yours. So far (3-days) the bulb starts first time, every time (and it seems quicker). As for the part numbers, I read elsewhere that the part without the "P" is a Toshiba factory part and the part with a "P" is an aftermarket part. I can't attest to the accuracy of this, but it makes sense. I used the part with the "P" and it appeared identical to the original ballast.

dtomlinson

Toshiba 52HM84 Ballast Replacement with large pics

Quote:
Originally Posted by smergs
I'm still waiting to hear from anyone if the symptoms I am having sound like a lamp ballast issue. Does anyone know for sure? Thanks!
Thanks coronad0 for your excellent and detailed post. I used your photos and description to change the ballast in my 62HMX94. Everything was essentially the same. I did run into one problem you didn't mention. After reassembling my set, the bulb didn't light and I got an "open bulb door" indication on the front LEDs. The door was closed so I opened up the set and found the plug on the end of the blue/white wires from the bulb door switch had become unplugged when I pushed the chassis into place. I searched and searched for the other end of the plug, without success. Finally, I pulled the electronics chassis (the left chassis) and found a mating plug (labeled P902a) on the main circuit board. Not being sure it was the correct plug, I downloaded the service manual for my set and confirmed it was the correct plug. I reassembled the set and it worked perfectly. Not only did the new ballast seemingly fix my intermittent start-up problem, but cleaning the lens really improved my picture!
Thanks again for your description and pictures. It made the job easy to do!

dtomlinson

Toshiba 52HM84 Ballast Replacement with large pics

Genius! Thank you so much coronad0 for the pics and text. We were told by the repairman that the entire light engine would need to be replaced for $1,000. We found your post, and after receiving the $100 part we bought on-line, we fixed it in under an hour. Works beautifully now. Thanks again!

kacrewe

Toshiba 52HM84 Ballast Replacement with large pics

Thank you!! I feel comfortable replacing my ballast, however everyone else on this thread must have bought out all the ballasts in the US. I can't find one for the life of me. I ordered the regular ballast and the refurbished one on seperate orders from Conn's. I will cancel the order that is not fulfilled first. At the moment they are both backordered

BTW, my TV is a 62HM94 ( 3 years old ). I have had to replace the bulb twice and now I have to replace the ballast board.

The cost of owning this TV is starting to get rediculous.

buginajar

Toshiba 52HM84 Ballast Replacement with large pics

Just a quick "your welcome" to everyone who was able to save some $$$ before buying a very expensive light engine or costly repair!

Smergs, in case no one has gotten back to you, yes, it sounds like a ballast issue. The P on the part indicates a direct Toshiba ballast, not a refurbed one, which would also explain the $154 for the P version, $76 for the refurbed one.

On a sad note though, about a month ago my light engine finally died out and that was enough for me and I have moved over to the Plasma world with a Panasonic 50" ( http://www2.panasonic.com/consumer-e...00000000005702 from Costco it was about $1500! ) and it has a gorgeous picture.

I'll be putting my TB25-LMP lamp and 23122468 up on eBay or on here at AVS if anyone needs 'em. I think I have only about 10 or so hours on both the lamp and the ballast board.

I'll probably put the hull that is now my 52HM84 up on Craigslist or something for extra parts or if someone wants it for a local community college for their electronic engineer students ... no charge for that, the thing is so huge and is taking up much needed basement space where a sweet air hockey table should be

Glad everything worked out for those of you who did the job yourselves!

coronad0

Toshiba 52HM84 Ballast Replacement with large pics

Hey all,

I actually did not have enough posts on AVSForum to sell my items ... lol.

Here's the links:

TB25-LMP: http://cgi.ebay.com/ws/eBayISAPI.dll...m=170294340249

Ballast Board: http://cgi.ebay.com/ws/eBayISAPI.dll...m=170294340827

Good luck!

coronad0

Toshiba 52HM84 Ballast Replacement with large pics

Quote:
Originally Posted by Hudsy
Thanks for the awesome post. I have been without my 62" now for a week as tomorrow was the first available service call that I could get. The tech was able to stop by tonight and took a look at the tv. He said that the problem is either the ballast or the light engine. It is doing the same thing as noted above, the red light is solid and the green light flashes 9 times and then restarts and goes through the whole thing again. The lamp was replaced 7 months ago and so I purchased a new one last week but that did not fix the issue, luckily I can take it back.

From what I have read it sounds as though if it is the ballast that has died I would not hear the clicking sound when I turn it on, however I do. I hear the fans kick into high too. What I am affraid of is putting money into the ballast just to find out that it isn't the problem. Anyone have any ideas on how I can diagnose whether the ballast is in fact the issue?

Thanks

Dave
I'm having the same problem as Dave - it recycles 9 times (with both loud click and fan noise), then both red and green lights flash. Then I press the power on button again and within 1 or 2 cycles, it comes on. Since Dave never got a direct answer, I figured my simplest/cheapest approach was to replace the ballast and go from there. I did call an authorized Tosiba tech and they thought ballast too. FRELL! No luck. Spend 1.5 hours replacing it and same thing still happens. At least I know what the problem is NOT :-)
So, any ideas? Do I need a new light engine (symptoms don't sound like light engine from descriptions I've read)?

nalawod

Toshiba 52HM84 Ballast Replacement with large pics

After changing the Ballast the Tv came on, bulb is new. Know its showing a black and white chekcerd board more like rectangel boards thumbnail size all across the screen also will not power of itself..any ideas Thanks in advance

gujuguru

Toshiba 52HM84 Ballast Replacement with large pics

BTW, I recently bought a new ballast from partstore.com for $164, which came out to $190 with shipping and tax.

TheSammo

Toshiba 52HM84 Ballast Replacement with large pics

Hi guys,

Great thread, I love the step by step on how to replace the ballast!

My question, I just received the Toshiba 62hmx84 as a free tv from my parents who are sick of replacing the bulbs every year or so. I am trying to figure out if this sounds like a ballast issue maybe: The tv will turn on after cycling through the blinking green lights about 3 times. I can hear clicking in the back of the tv and the fan starting up as well as light through the vent. If I try to run the tv in HI BRIGHT Lamp Mode then the screen does not hold the bright picture consistently. You can see the bright parts of the picture like the color red go from bright to dark every second or so.

There seems to be a lot of experience with these tvs on this forum/thread, so if anyone has had these symptoms and knows the fix, their wisdom is much appreciated.

Thanks,
Scott

scottcy

Toshiba 52HM84 Ballast Replacement with large pics

Ugh the pictures have gone away!

Would anyone send me the instructions that have the pictures, please?

samreno@gmail.com

Big thanks in advance!

TheSammo

Toshiba 52HM84 Ballast Replacement with large pics

Great Forum!
I am a first time user and those of you experienced types will think me a genius or an idiot, probably the latter; however, after I pulled the 9 month old LAmp TB25-LMP and wasn't surprised to see the bulb was gone again, I started looking for an alternative to 225.00 bulbs ( this is Canada ! ). I searched and searched and nothing. I then got the great idea to hit the local hardware store pickup a 75w par 30 flood light ( the exact size of the old one) and a screw on type socket with pig tails. I cut the wires from the old light to salvage the connector and wired them together. Guess what !! it actually worked @!! well it worked for all of about 10 seconds (lights, colors, sound everything) and then the screen went black, the sound remained, and the cycle of screen on and off continued for about 9 attempts and then it locked out I guess.
I have read alot here on this forum and at first I would have thought my ballast has died, now I am wondering about this thing called a light engine ??
Can someone please tell me what the ballast does ? and what does the light engine do ??
I have had the whole tray out and was going to hard wire in somw 120 volts to the bulb but I figure I would get stuck with the cycling on and off and maybe a loss of temperature protection.

Sorry for the long read - but I am ready to scrap this thing and use it as Snow Slide !

Thanks

Newf14

Newf14

Toshiba 52HM84 Ballast Replacement with large pics

I HAVE A BALLAST BOARD D4456M-01 and check the r33 and the cr1
the r33 is good but the cr1 is bad it look like a diode but it says gv258 on it i cant find any on the internet about it please help

MSENECAL11

Toshiba 52HM84 Ballast Replacement with large pics

Tiger7 what's your email - I think I have a MSWord file that includes the pictures from Coronado

mtom5

Toshiba 52HM84 Ballast Replacement with large pics

Does anyone have the pictures for these instructions? Looks like cornado0's account at photobucket.com expired. I am in the middle of replacing the ballast and could use the pictures.
Thanks for anyone who saved it and can send it to me.

tiger7

Toshiba 52HM84 Ballast Replacement with large pics

Coronado, Thanks for the post and pics, AWESOME ! My tv had sound and no lamp lighting up, so I bought a new lamp but still the same. It was flashing 9 green and red light stayed on. I bought a ballast and used these instructions to replace it. Now green stays on and red light flashes constantly and tv doesn't start. There is a fuse that i located and is good and I bypassed the lamp door switch so power should be on.
I was wondering if there is a reset or something that I can do. I cannot afford to spend any more $$ on this Lemon.
Any help appreciated.

kart98

Toshiba 52HM84 Ballast Replacement with large pics

Coronado,

I doubt you check this thread anymore, but I wanted to write to thank you anyway. I have no technical experience (or general comfort tinkering with electronics), and I successfully repaired my Toshiba DLP tonight by following your excellent instructions. THANK YOU!!

DCBuck

Toshiba 52HM84 Ballast Replacement with large pics

I just got done replacing my ballast and the TV is working like new again. Awesome! No more leaving the TV on overnight on Friday or Saturday night (or both) so that I wouldn't have to sweat it out the new morning before the football games start.

The challenge for me was finding one for less than $150-$160. I had some ordered in the $100 range but they were backordered. Partstore.com finally got some in stock this week. $92 with tax and free shipping. Not quite the $50 refurbs but still worth it since it worked! If this didn't work it was probably $1200 for a new plasma.

websthetics

Toshiba 52HM84 Ballast Replacement with large pics

My 52HM84 has been acting up lately. It "flashes" between light/dark every couple seconds and then it looks like the light wavers a bit (is not steady). I think it could be dust on the color wheel.

Is it possible to use an aircan to blow out the area?

I just replaced the lamp 2 weeks ago (3 years on the first lamp, 2 years on the second). I cleaned the inside of the lamp area, including the glass covering the color wheel area.

pier0188

Toshiba 52HM84 Ballast Replacement with large pics

I just replaced the ballast this past Thursday using this guide as a basis on my 62HM95 but still the bulb will not power on. My light engine sled looks a bit different from the one in this guide but I am positive I reconnected everything correctly. Is it possible the bad ballast board I replaced killed my new bulb?

rapstar1983

Toshiba 52HM84 Ballast Replacement with large pics

Thanks coronad0!

You just save me a bunch of money.

For what it's worth, the part was on back-order at Conn's. I found that https://www.encompassparts.com/ had several in stock.

jt-kline

Toshiba 52HM84 Ballast Replacement with large pics

I just replaced the ballast on my Toshiba DLP 62HMX84 - followed Coronad0's post (THANK YOU!!).

One problem....when I started up, the green light stayed on, red blinked........"Lamp door not seated properly". Upon further review, I found a blue and white wire attached to the safety relay (switch) at the door area. This wire was a bout 15" long and had a 3 hole connector at the end.

Obviously it needs to be connected SOMEWHERE?

Does anyone know where I can make this connection?

THANKS!!

MJAD

Toshiba 52HM84 Ballast Replacement with large pics

Coronad0,

I replaced the ballast few months ago. My TV went bad again. This time only the red light flashing 43 times then both red and green light flashing together. I paid $17 from online service. They told me it's not lamp problem and I need to let Toshiba tech person to fix it. I have my 52HM84 for 4 to 5 years. So I thought it's not worth to fix it then I tried to replace the ballast again. But you are right, the copper ribbon cable is VERY hard to put it back. I end up broken the pin. I don't remember how I removed the screws from ballast last time. Sorry, I don't mean to blame you for removing the copper ribbon cable. This time I can not put the cable back and I believe I broke the pin. Do you know how I can replace the cable and set since pin already broken?

Thanks,

Frank

frank2000

Toshiba 52HM84 Ballast Replacement with large pics

Hey Coronado,

I just wanted to thank you SO much for posting your detailed instruction & photos on replacing a Toshiba DLP ballast.

Our stupid TV has blown two of them in 4 1/2 years (plus 4 bulbs!) and I just don't have the $$ for another expensive repair. Anyway, after finding a ballast on-line (which is getting to be VERY hard to do) I sat down with your excellent instructions and repaired my set. I have no experience at all, but your instructions and photos were very easy to follow and the set works fine now!

BTW, while searching for the ballast, I found another guy with the same problem, and sent him the link for your DIY guide. He was successful too.

It was really a kind thing to do and you've helped a lit of people. THANK YOU!!! You're my hero!

Charlie La Pat

charlieray1

Toshiba 52HM84 Ballast Replacement with large pics

Hi everybody, thanks to this awesome post i was able to change my ballast and had the tv working fine for about 6 months. But then my lamp blew out and after i replaced it starting having problems again. Now when u turn on the TV it starts up just fine, but after about 2 minutes the picture goes blank withthe sound still on and then the tv shuts off, leaving the red and green lights blinking simultaneously. Then when I turn it of and on again it has the same symptoms as when the ballast was bad. So after that i unplugged it from the wall and plugged it back in with the same results: picture for a couple minutes and then blank etc.

any ideas what this is? i took out my ballast again and looked at it. It seemed fine and when i put the tv back together it was still doing the exact same thing. Is this a light engine issue?

-thanks

xxyoyixx

Toshiba 52HM84 Ballast Replacement with large pics

BTW, the resistor that was bad is R3 on the ballast board.

rutlean

Toshiba 52HM84 Ballast Replacement with large pics

I replaced a 1000 ohm resistor on the ballast board and that fixed mine. A lot cheaper than paying $162 for a ballast. Also, while I had the light engine out I noticed that there was a huge amount of dust on the projection lens. I cleaned it with a fine thread cloth thinking...why not. When I got everything hooked back up there was a very noticeable difference with my TV. The picture was much more crisp and sharp. It looks like new now. I was amazed at the difference after cleaning the lens, so while you have everything apart you definitely want to clean it. It might even be worth taking apart again if you picture doesn't seem to be as good anymore.

rutlean

Toshiba 52HM84 Ballast Replacement with large pics

FYI, if the blue screen happens to anyone else, the copper ribbon connector is backwards!! I flipped it around and everything works PERFECT!!!

Thanks for the post and pictures!

vze296bm

Toshiba 52HM84 Ballast Replacement with large pics

Do you remember where the resistor was? I may take a look at it myself. All of the ballast I see now are $162. I can't see spending $162 for the ballast knowing the light is going to need replacing almost every year.

rutlean

Toshiba 52HM84 Ballast Replacement with large pics

I replaced the balast and the lamp powers up, but the screen goes blue with little rectangles and nothing else happens???
Any answers???
Help

vze296bm

Toshiba 52HM84 Ballast Replacement with large pics

I just want to thank you for this great post AND photos. The job was much easier with the pictures. I replaced the ballast of my 62HM94 using your pics and instructions.

EmeTG

Toshiba 52HM84 Ballast Replacement with large pics

I almost began to open up the back of the set and decided to give it another go. It failed a couple of times and SHOCKER,,,,, I saw a picture!!!! I am very afraid to turn it off after several days without it. The sad thing is, I think this set barring all its mechanical problems, has a magnificent picture!!! I will probably do order a Ballast as I am quite sure this JOY will not last forever.

Thanks
jtoolman

jtoolman

Toshiba 52HM84 Ballast Replacement with large pics

Can anybody PLEASE tell me the input and output DC voltage you have on your ballast. I am in the process of troubleshooting mine and wanted to make sure I wasn't gonna blow anymore lamps.
I am currently getting 350V input and output to the lamp....

Thanks

old_skool

Toshiba 52HM84 Ballast Replacement with large pics

Mine lasted just over three and a half years so I can consider myself luck I suppose. Order a new bulb and after replacement I forgot to put the hatch door back on but realized that and popped it on. Set started right up and all was well for a few viewing cycles. Then it would refuse to start by cycling through the powering up sound followed by the blinking green light and a restart. Then it would start up fine. It would do that randomly and finally as of a couple of days ago will not start up. The bulb looks a good as it was when new since it only has a bout 15 hours on it. So I suppose it's the ballast board. However I just read her on this thread that is you DO HEAR the powering up sound that it would not be the ballast. Did I read correctly or did I miss something.

It also seems I cannot find a Toshiba TV DLP authorized rear place in my area of Silver Spring Maryland. I mean I would actually shell out some $$$ to have a Toshiba repair person come out and do the repair in case he blows something up at least it won;t be me. I am good with my fingers and would not be afraid of replacing the ballast but I would want to be 100% sure that that was the problem to begin with.

Tried a few of the places mentioned for the ballast but many place do not seem to have then in stock.

Hope to hear from any of you all who have already gone through this.

Thanks you all.

Jtoolman

jtoolman

Toshiba 52HM84 Ballast Replacement with large pics

Has anyone had any issues with getting their lamp back after replacing the balst board?

JBLB1510

Toshiba 52HM84 Ballast Replacement with large pics

is there anyway you can post how to do this?

FNPonderous

Toshiba 52HM84 Ballast Replacement with large pics

Just came back to post a message saying I never did replace the Ballast on my TV. I kept holding off to see if it ever just stopped working altogether and to my luck the tv just started working again and I haven't had the issue since back in December, before Christmas.

That said, I just sold it last night. I am looking at getting a Panasonic TH50PZ85U plasma tv. I almost bought it last night but decided to sleep on it and read a few more reviews. I've been hearing great things about the Panasonic Plasma's so I think I'm going to get this one tonight.

Thanks again to coronad0 for the excellent how to that fortunately I never did end up having to use. I just hope the new owner takes care of my Toshiba and I hope it continues to work and doesn't give him any issues. I'm going to miss that tv but it's time to move on.

smergs

Toshiba 52HM84 Ballast Replacement with large pics

Almost two years after the original post and still another successful fix. Thanks to coronad0!! I was unable to find a new ballast board for under $140. I did however discover ModusLink PTS. These guys will repair your board for about $50 plus shipping. Excellent service and great results. Had my board back within a week. Check them out on line.

dan0s

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