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My toshiba 42h81 has a convergence problem. happened all at once. changed out stk392-110 ic's, better, but can't align red and blue from side to side, and warped red.

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Check the value of the resistors if they are ok, check th HV regulator ic, toshiba has a modification for it.

Posted on Dec 02, 2008

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1 Answer

Red lamp is out of Focus and the red is curved on the bottom left hand side of the screen. Auto Focus shows error. What could cause this to happen.


Ur convergence is dead.Must know how to solders?Must change ICS and all it resistors in the convergence board.Tries Tv repair World.com,Tvrepairkits.com for the convergence kit.The shop will cost u $300 parts and labors.

Jan 14, 2010 | Toshiba 42H81 42" Rear Projection...

1 Answer

Red Convergence Hairs will not move side to side. do move up and down


It's most likely the Ic's but do test the return resistors for any change in value before closing it up.. It will add a greater reliability to the repair.
Bill

William Rayburn, CET
Premium Technologies
PO Box 442
Long Beach, WA. 98631
360-642-4993

Oct 24, 2008 | Toshiba 42H81 42" Rear Projection...

1 Answer

Convergence -manual


Replace the convergence amps and test and replace any or all of the 2.2ohm resistors in the yoke return path out in front of the amps. This unit takes two STK392-110 Sanyo originals, DO NOT GET CHINESE KNOCK-OFFS... Buy them from Acme sales out of Florida and you can be assured they're originals.
Bill

William Rayburn, CET
Premium Technologies
PO Box 442
Long Beach, WA. 98631
360-642-4993

Oct 11, 2008 | Toshiba 42H81 42" Rear Projection...

1 Answer

CONVERGENCE PROBLEMS


You need to replace the convergence ICs there are two of them. they are STK392-110 you can get replacement ICs at the following link and they provide free instalation instructions with pictures so you can do the job yourself and save about 400.00 Heres the link.
http://servicemanuals.vstore.ca/

May 18, 2008 | Toshiba 42H81 42" Rear Projection...

2 Answers

Color convergence alignment


change your convergence ICs that should solve your problem.If you need more info let me know.

Apr 08, 2008 | Toshiba 42H81 42" Rear Projection...

1 Answer

The touch focus


Will the red align in all 4 directions in the other areas of the screen? If it moves in all 4 directions everywhere but one section its probaly a resistor near your convergence amplifiers. If the red wont move in all 4 directions anywhere, then its your Convergence amp ICs faulty. Cost about 20.00. Hope this helps.

Jan 12, 2008 | Toshiba 42H81 42" Rear Projection...

1 Answer

TOSHIBA REAR PROJECTION TV 42H81


you have a convergence problem that will require the replacement of the convergence amp ics.

Nov 29, 2007 | Toshiba 51H83 51" Rear Projection...

1 Answer

Toshiba 42H81 42 in. Rear...


If you are referring to the convergence alignment of red,green and blue........will require technical and mechanical skills.....
1) Pull chassis
2) Replace both STK392-110 convergence IC's
3) Reset alignment as needed........................................T.

Nov 23, 2007 | Toshiba 42H81 42" Rear Projection...

1 Answer

Toshiba 42H82 convergence problem


Replace STK convergence IC's w/OEM or better parts.Senior tech soldering ability needed. Ex==Steel jumper wires feeding b+ to conv. IC's need resolder to prevent call-back.Also, best re-alignment done in service mode==consult service literature.

Sep 19, 2007 | Toshiba 42H83 42" Rear Projection...

1 Answer

TOSHIBA REAR PROJECTION TV 42H81


FIRST DO MANUALY (THE ALIGNMENT OF CRT'S)

May 12, 2007 | Toshiba 42H81 42" Rear Projection...

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