Question about Toshiba 50H72 50" Rear Projection Television
Saw a solution from you on the message board and I'm hoping you can help. I had a convergence problem as noted by many folks out there. Replaced the two IC's and an obviously blown resistor. Unfortunately, now I get no picture, no sound, just the red power light. Nothing in the back looks obviously blown or damaged. Please advise on where to go from here. Thanks!
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Posted on Jan 02, 2017
SOURCE: toshiba tp50h50
You really should get a service manual for this set to check the voltages. If you found out what the wire was for that you remove from the board to get the set to come on, you could troubleshoot and narrow down your problem. Without it you would be guessing. Good Luck and let us know how you made out.
Posted on Mar 17, 2007
SOURCE: Accessing convergence in menu
That is a TA0262 chassis and from what you're describing it could be a one of two things. A picture would speak volumes if you can send one...
If it's convergence you should be able to replace the amps, check and/or replace a couple of pico fuses and resistors and you're good to go. But from what you're explaining and what djnick was understanding the problem to be it sounds a bit like what techs call piecrusting - affecing only the outer edge(s) of the picture. If so, it's likely the hyper module Toshiba p/n# 23148024 and more specifically the grouping of caps on that module that have failed. More specifically 11 caps all 10mf/16v at the following pos#'s:
They're an smd cap and most of us simply replace them with miniatures and just clip the leads to fit.. Or you could just pull the board and send it ti a reputable shop and have it done, not an expensive job...
Either way if you have a pic it would be most helpful...
Posted on Feb 03, 2008
ok i'm goin to need more info about your problem. you stated fuses and didn't say the location numbers of the fuses. Also, have you rechecked your fuses to see if they are all still good? 3 fuses sounds like more then one problem. once you tell us your loc#'s of your fuses, we can look into your problems.
Posted on Apr 10, 2008
When I originally removed the board with the convergence IC's I labeled all of the wiring harneses with number tape as I keep a multi number roll on hand as I am a radio broadcast engineer. However there was one set at the very back of the board behind a large heat sink I didn't label because that location was the only place they would fit. When replacing the board after replacing the IC's I missed that particular wiring harness as it didn't have numbers and I didn't see the harness laying among the other wiring. After removing the board to check my soldering work that's when I discovered the harness. I plugged that set in along with the rest, replaced the board, and after cleaning the CRTS's and the mirror the set worked good as new and a much sharper, cleaner picture. Thanks for the information on your forum as it always feels to repair something yourself and save a few hundred bucks to boot.
Posted on Oct 13, 2008
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Stk392-110 red convergence IC is bad...normal procedure===
1) pull chassis 2) replace both Stk's for reliable repair
3)re-assemble 4) re-align convergence
If you hire a technician, 400.00 is ave. price.
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