Question about Toshiba 42H81 42" Rear Projection Television

1 Answer

The touch focus

The red will no longer align but mainly on the left side of the screen.

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Toshiba Master
  • 8,617 Answers

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.

Posted on Jan 13, 2008


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

51F59A red screen all the time

1. entire grill below front screen must come off (usually held in place by screws in back on either side.)

2. locate and remove inspection plate dead center behind it.

3. Locate small black plastic block with 6 black controls built in; three (look carefully) left to right are focus--DO NOT TOUCH THOSE.

The other three are Screens and will be marked with tiny letters r g b (red, green, blue) and green is always middle.

Locate the red screen (not FOCUS).

With set on adjust red down just slightly(usually less than 1/8 turn.



Nov 20, 2011 | Hitachi 51F510 51" Rear Projection...

1 Answer

Magic focus --blue and yellow sag in the upper left area of the screen

This is a problem with the convergence circuit. If you can solder, you can repair this yourself. First try and resolder the pins on the existing convergence ICs. These are large black ICs attached to a heatsink and should be marked STKxxx. If the resoldering does not resolve the problem, replace the ICs.

Mar 22, 2008 | Hitachi 53FDX20B 53" Rear Projection...

1 Answer

57H81 rear-projection Toshiba red un-aligned

sounds like to me that you need to replace the convergence IC's.

Apr 06, 2010 | Toshiba TheaterWide 52HM84 52" Rear...

1 Answer

Screen Is Blurred

Did you try hitting the small button on the front of the tv labled flash focus? Try pushing this button because this model only features auto focus for aligning the red/green/blue projectors.

Nov 24, 2008 | Sony KP-53HS10 TV

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.

William Rayburn, CET
Premium Technologies
PO Box 442
Long Beach, WA. 98631

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

1 Answer

Red is out of convergence

You can repair it yourself by replacing both STK392-110 Convergence ICs. You can get replacement ICs at the following link with free instalation instructions . Heres the link.

Aug 08, 2008 | Toshiba 65HDX82 65" Rear Projection...

1 Answer

Toshiba 42H83 Touch Focus Problem

I just got finished repairing the same model . The convergence modules are bad cost of repair is 250.00 for a service center to fix. My advice would be call your local service center tell them what i told you bad convergence ic and ask them how much they charge,

thanks doctor video good luck since 1987

Jun 14, 2008 | Toshiba 42H83 42" Rear Projection...

1 Answer

LG rear projection colours out of alignment

This is all i could find when i did a search:
they have inherent problems with the glycol oil used to cool the tube leaking past the bladders & onto the boards.... & it's conductive :p

Dec 10, 2007 | Televison & Video

1 Answer


One of your convergence IC's has burned out and needs to be replaced. A good rule here is to go ahead and replace both STK392-110 IC's with the new improved STK392-150's. If you have never replaced convergence IC's and realigned convergence circuits, allow a qualified tech to handle it for you.

Aug 12, 2007 | Hitachi 43UWX10B 43" Rear Projection...

Not finding what you are looking for?
Toshiba 42H81 42" Rear Projection Television Logo

Related Topics:

34 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toshiba Televison & Video Experts

The Knight
The Knight

Level 3 Expert

74999 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

Jaime Hernandez

Level 3 Expert

2326 Answers

Are you a Toshiba Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides