Question about Toshiba 43H71 43" Rear Projection Television

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Toshiba 43H71 It appears that I have a convergence issue(can not move the red gun up or down. I have read several problems pertaining to this and it appears I need to replace the STK's chips and possibly the resistors. I work on computers so component replacement is not new to me. Where are these chips located? Can you send me a picture showing the components or direct me to the proper location? Is there a number I should call to order these chips? A local TV shop said they have a number but I'm not sure if I need the part #'s first. I'm aware of the heat sink compound needed to dissipate the heat. Any help on this matter would be greatly appreciated.

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Re: Toshiba 43H71

Hi, I am having the same exact problem. Finally found this. I ordered the parts and will be performing this when they get in.

Posted on May 11, 2007

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I just moved my 42in. Toshiba rear projectiom Tv from my basement to the upstairs and now my convergence is off. The red tube cross is low on the manual adjustment and will not go up to the other colors.IT...

It sounds like you jostled the red CRT gun when you moved the set. If the convergence adjustment still moves the red cross hair the the circuitry is okay. Your red gun needs to be realigned. This requires a service call unless you want to attempt it yourself. It is fairly involved and requires some specific tools as well as using the service mode on the remote to reset the convergence after the gun is repositioned.

Dec 06, 2009 | Toshiba 53H71 53 in. Rear Projection...

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Picture problem

The convergence amps need replacement in your tv...

Oct 10, 2008 | Toshiba 43H71 43" Rear Projection...

1 Answer

Convvergence problem w/ Toshiba 50H82

You need to replace following ICs, may be 2 pieces in your tv for convergence problem.
IC, STK392-110T

Toshiba Part Number: 23135090X
Please search on net for availability in part stores

Sep 27, 2008 | Toshiba 50H82 50" Rear Projection...

2 Answers

RED Convergence Alignment issue

Replace both STK392-110 Convergence IC's with Toshiba or Sanyo quality................No cheap IC's !!!......................T.

Aug 16, 2008 | Toshiba 43H71 43" Rear Projection...

1 Answer


Replace both STK392-110 convergence IC's with Toshiba or Sanyo cheap junk IC's !!!.................T.

Aug 16, 2008 | Toshiba 43H71 43" Rear Projection...

1 Answer


you can replace IC stk 392-110 (one or all) and tray to adjust R_G_B

Nov 25, 2007 | Toshiba 43H71 43" Rear Projection...

2 Answers

43H71 43 In Projector

Use Toshiba STK392-110T X 2 for exact replacement..........T.

Nov 21, 2007 | Toshiba 43H71 43" Rear Projection...

2 Answers

Red is off

This is the typical convergence problem you will read about over and over on this website. You need to replace 2 amplifier IC's part number STK392-110 and check all of the resistors in that circuit.

May 11, 2007 | Toshiba 43H71 43" Rear Projection...

2 Answers

How to adjust red blue green

if ur in service mode already..turn down all first turn it up until the desired intensity is achieve.then blue all the way until it almost blend the green.u must not see one color either too much green or blue.turn up red now,let it blend until u see a perfect black and white.note:make sure that the color level is set to minimum and tint to center. ihope i help u..

Mar 20, 2007 | Toshiba 43H71 43" Rear Projection...

2 Answers

Vertical Red/Green lines

You have bad connections on the board and need to be resoldered or the convergence IC's are bad. If you know how to solder on solid state elctronics then you can change the IC's or find a bad connection on the board if you know the High Voltage issues when working on a TV set. If you have to training on TV sets I highly recommend that you call a service person to assist you in this repair.

Sep 25, 2006 | Toshiba 43H71 43" Rear Projection...

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