Bill,
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!
Frank
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.
SOURCE: Accessing convergence in menu
Ellite,
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:
Cx261
Cx230
Cx270
Cz52
Cx178
Cx221
C514
Cx250
Cx670
Cx241
Cx541
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...
Bill
SOURCE: Toshiba 50H81 Has Power but No picture or Audio
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.
SOURCE: Toshiba 50H72 Convergence IC's replaced now no picture
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.
SOURCE: Convergence problem
YOU HAVE TO REPLACE IC BECAUSE IT IS BAD THE ICS NUMBER HAS CHANGE FOR STK392-110 TO STK392-150 THEY WILL SYAN MORE HEAT
You can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull
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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