Question about Toshiba 62HMX84 62" Rear Projection HDTV
I've had this problem before. I turn the TV on and the sound comes on but the picture doesn't come on. I have a red blinking light and a green blinking light that blinks much slower. About a year ago I was able to get someone to tell me I needed a new lamp and sure enough I did. The lamp had busted. I thought I had the same problem but when I slid the tray out and examined the lamp I noticed that it's still fine. Now I don't know what the problem is. I got an extended warranty for this TV by Warrantech when I purchased this but all I got was a runaround and ultimately ended up buying the lamp on Ebay and fixing it myself. Now I am clueless as far as what else is wrong with this TV can anyone help me out? My e-mail address is: [email protected]
I just replaced the ballast in my 52HM84, working fine now. My 2 cents:
Remove the lamp. Remove the lower back panel (13 screws), remove the housing behind the lamp door (2 screws).
I only slid the light engine out a few inches, enough though that I had to remove the plastic panel oriented horizontally between the projector lens and the backside of the tv.
You dont need to remove the screws that hold the lamp plug.
The ballast board is held down by 4 plastic retaining clips, push each gently to release the board from the aluminum housing. You do not need to unscrew the aluminum housing from the light engine tray. ( Be patient, read on )
Disconnect the 2 cables attached to the ballast board.
I know you are thinking, how do I remove the ballast board with the lamp plug where it is.
Orient the lamp plug on your new ballast to match the old and use a piece of tape to mark the top wire of the 2 lamp plug wires. Not sure that it matters, but why take the chance.
On you new ballast, find the tiny hole above each larger conductor hole, poke a paperclip in the small hole to release the wire. I've done it with a paperclip, you may try to use a pin or needle. Repeat on the old plug.
Your ballast is free at last.
Put the new ballast in place over the 4 plastic guide pins (part of the plastic retainer), the board should click into place.
Attach the cables to the board.
Insert the lamp wires into the back of the lamp plug, you did mark the top one right?
I won't bore you with the rest, because you've already been there.
The biggest mistake I made was allowing the housing that has the door interlock switch to fall off the table. Of course, this pulled the plug off the circuit board and it's not the light engine board either. Didn't know it had detached until I powered up and got the LED's blinking indicating the door was not properly secured. So I had some extra stupid work to re-attach it.
But I have LIGHT.
Posted on Jan 24, 2008
I got my ballast board in from Conn's 2 nights ago and even put up a post over on avsforum with pictures ... http://www.avsforum.com/avs-vb/showthread.php?t=1071492
However, knowing that the install of the ballast board was clean, I now have the following on my TV instead of a nice, clean HD signal:
Anyone ever seen something like this?
I did find one UK website that indicated it could be a "logic board" but I think that might have been for another model.
Posted on Oct 01, 2008
OK boys, I got the same problem as you all. I'm going ordering up the ballast and going in. Will post my results too.
Posted on Jun 10, 2008
The final conclusion to my problem on this Toshiba 62 inch wide screen was getting my extended warranty company to replace my TV with a different model Toshiba that was also 62" It took around 5 months before they actually replaced this TV which I found very frustrating. If anyone has a repairmaster warranty be prepared for alot of customer service calls placed and let the waiting game begin. It turns out that as of March of this year I was told that Toshiba no longer carries this light engine for this model and they no longer plan on making this part for this model TV. If anyone gets an update on this discontinued light engine please let me know. I still have this beautiful like new TV with stand sitting in the back room. I would still like to get this fixed someday. Regards, Ct. Drakeula....original thread author.
Posted on Jun 09, 2008
I have a 62HM84 and had the same problem with no picture and the blinking lights on the front, then the tv turns off. read the above and bought a lamp and ballast from conn's appliance online. the lamp is easy to replace, 2 screws and slide out then slide the new one in from the side panel. But the ballast was the problem, not the lamp.
keep track of your screws and how things went together. i did not still not sure about one piece. you do not have to cut anything to get to the ballast, but it is a pain. you have to take off the entire back panel on the lower part of the tv. unscrew the metal support bar (flat). unscrew the other screws on the bottom. they are connect to a rolling metal tray that all of the exposed parts are sitting on. before pulling tray out, there is a black plastic piece on the left side that is in the way. unloop the wires around the hooks and unscrew the one screw. there is still one fat wire that is connected on the left side that i could not figure out how to disconnect so the tray did not come all the way out. double check for other wires that may prevent the tray from moving. i think there is another on the right side.
to get to the ballast, it is on the right side, as far back as you can reach. to get it out, unscrew the brown electrical connector from the side door opening. pull the out from around the metal shield as best you can. unplug the other two wires from the ballast. there are 4 plastic hinges on the corner of the ballast, push back to pull the ballast out. just do the reverse to get the new ballast back in and the tv back together. had a very hard time trying to get the new brown electrical plug back in. everything worked fine once i put it all back together.
Posted on Jun 09, 2008
I have a 62HM84, had lamp problems as all toshibas have, this time when I replaced it, it took several cycles before the screen would appear.. I researched conversations on the web for my particular senario, turns out that the lamp ballast was the problem.. As I mentioned it was slow to start up with a clickling sound as it cycled..Finally it just gave out and the screen would not appear.. I ordered a lamp ballast which is the device that the lamp plugs into.. Evidently as the bulbs blow out they can effect the ballast over time. I ordered the part from Conn's part store.. I also downloaded the Service Manual (which was realy know help in my opinion) it said to remove 2 screws and unclip the ballist which is easier said than done.. The screws holding the ballast for my model 62HM84 is enclosed inside of a heat shield which is near impossible to get a phillips on.. So I did what I do best, I got out my Dermel drill and with my cutting wheel and cut away at the heat shield to gain access to the ballast.. I did not even try to remove the screws, I was able do disconnect the to plugins on the ballast and I cut the wires that go to the lamp.. I was able to now unclip the ballast from the four plastic pedistals that it rest on and remove the ballast...I then installed the new ballast and made one more cut between the clamp and the lamp
housing to slide the wires from the new ballast back into place for mounting. Once everything was back in place the Toshiba fired up on the 1st try and all was good.. It was a great battle but if your paitent you can do it .....
Posted on Jan 02, 2008
My daughter tried to clean my Projection screen with water. now i have a dark gray/black mark across the bottom of my screen can this be repaired
Posted on Feb 14, 2008
I have the exact same problem with my Toshiba 62HMX84. For about 3 years we have just kept leaving on the TV until the lamp burns out (about 8 months) then comes the off/on cycle we keep turning off and on until one day it decides to stay on. Now I am on my 3rd lamp from leaving the TV on 24/7 because I am afraid to turn it off. So now I am looking into the ballast. Can anyone tell me if it is possible to fix this part myself? If so how to get to it and determine if this is the real problem? Also when I remove the lamp and look at something that seems like a lens it looks cracked on the left side and the top (kinda like a backwards 7) Is this normal? Please help :)
Posted on Jul 15, 2008
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