Question about Toshiba 55H70 55" Rear Projection Television

1 Answer

Bad picture there are half moon lines starting at one side of the tv and going to the other side they are at the top half of the tv. They are red and green. the picture is black on the top of the screen about a inch,. Can someone please let me know if this is fixable and what the price range would be to fix?

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert who has written 50 answers of more than 400 characters.


    An expert who has answered 200 questions.

  • Expert
  • 244 Answers
Re: bad picture

Try to consider the following tips:

Smearing out of one or several colors, best seen in txt-mode, my 27CE4599/30R smeared out in red and green, not in blue, fully exchanging the drivers (input and output complete, otherwise the RGB driver will blank the crt) moved the fault to the other color
Replace the 180K feedback resistors in the amplifiers with normal 1/4W metal film instead of 1/8W, they can become open circuited (in mine both green and red were faulty in this way). Change all 3 and not just the defective ones, replace also all the paralleled 75K resistors per color (fe by 47K+27K) to prevent bright color raster (they can also become open circuit)

Posted on Nov 29, 2007

Add Your Answer

0 characters

Uploading: 0%


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


3 Points

Related Questions:

2 Answers

Color problem with Toshiba

tv is on it's 'hospice' end of life routine..unless you want to gut it completely, and replace all the electronics..

Apr 19, 2008 | Projection Televisions

1 Answer

Blurry picture with green and red halos around

Ur convergence is dead.Must replaced 2 Convergence ICS,and some or all the resistors.Know how to solders?Buy a convergence kit Tv repair, to repair it ur self.The shop will cost u $300 for parts and labors.

Feb 16, 2010 | Samsung HC-P4752W 47" Rear Projection...

1 Answer

Color convergence problem

If you follow the instructions on the other thread, you should be able to resolve the problem. Try the simple stuff first. Resolder the pins of the convergence ICs and see if that alone resolves the problem. Sometimes that is all it takes.

Keep us posted.

Jan 30, 2009 | Mitsubishi WS48511 48" Rear Projection...

1 Answer

Sony Kp65sw500

You have 2 IC's in the convergence circuit and possibly a micro fuse that needs to be replaced. Consult a local TV repair shop.

Nov 23, 2008 | Sony KP-57WS500 57" Rear Projection...

1 Answer

Half moon shaped lines

your convergance board is about to go out. thats what happened to mine. it will cost about 300 dollars to get it fixed

Aug 09, 2008 | Sony KP-46WT500 46" Rear Projection...

1 Answer

RCA Projection TV model #p61926

The convergence circuit is your problem and most times with this model the convergence power supply bd. is the problem.

Feb 11, 2008 | RCA P46921 46" Rear Projection Television

1 Answer

Red green lines

have the convergance amplifiers replaced, there also may be some resistors and pico fuses to replace. the amps are STK392-120 there are two of them and they should both be replaced. have a tech do this job.

Jan 15, 2008 | Philips 60PP9202 60" Rear Projection...

2 Answers

RCA Projection TV model #p61926

get an estimate to fix your convergence problem

Oct 08, 2007 | RCA P52937 52" Rear Projection Television

Not finding what you are looking for?
Toshiba 55H70 55" Rear Projection Television Logo

109 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toshiba Projection Televisions Experts

Jaime Hernandez

Level 3 Expert

2267 Answers

Dave Naylor
Dave Naylor

Level 3 Expert

834 Answers

The Knight
The Knight

Level 3 Expert

66536 Answers

Are you a Toshiba Projection Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides