Question about Toshiba 43H70 43" Rear Projection Television

1 Answer

Arched picture at bottom seperating the green and red

Hi, I'm having trouble with my projection tv. It curves at bottom third of screen upward from right to left creating an arche. Also the colors seperate green from red in this area. I've removed the center magnifier lens which is the green one and covered to lamp. This fixes the curved affect but obviously the green is ommited. Is this a lamp or a lens problem? Thanks in advance for any assitance you can provide me.

Posted by on

  • Andre Bourque May 22, 2007

    This is a Toshiba 43H70 HD.



1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Your tv has a convergance failure. the convergance ic's need to be replaced. Upgraded part # STK392-150 or STK392-160. Both ic's should be replaced to prevent future failure of other colors.

Posted on May 23, 2007


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


Problem #1) Convergence

  • Screen Looks 3D
  • Colors wont align
  • Video may look distorted
Problem #2 CRT Fluid has clouded over. Symtoms
  • Dull looking video
  • White looking video
  • Halos around objects
  • Red/Orange looking video

You can see some examples and find a fix here...


Dec 09, 2009 | Sony KP-57WS510 57" Rear Projection HDTV

2 Answers

Colors arched and overlapping

if the option for convergence is still listed under the setting section of the on screen menu, then you need a convergence power supply board. If the convergence option is missing from the menu you need the ITC222 convergence missing repair kit. You can get either one at the following link they include instructions for the repair.

Jul 13, 2009 | RCA R52WM24 52" HDTV Projection Television

1 Answer

Colors have seperated on tv, and curve

You have a convergence problem.
Maybe need change the IC of convergence, or the power supply of these parts.


Apr 04, 2009 | Mitsubishi VS-50501 50" Rear Projection...

1 Answer

Red, Green, Blue curve upwards and cast shadows

that sounds like a typical Convergence IC problem..

this is a picture of what typical convergence ics look like

Mar 12, 2009 | Panasonic PT-53TW53 53" Rear Projection...

1 Answer

Color seperation on rca 1998 46" rear projection tv

projection tvs have seperate color bulbs that put out the same picture the lenses just need to be adjusted. they probably shifted during the move.

Dec 04, 2008 | Televison & Video

1 Answer

Uh oh... the colors are curved and wacky

replace the amplifier IC chips for the convergence.  part # stk392-???  could be from 040 to 120..  90% chance that'll fix it.

Oct 08, 2007 | Panasonic PT-47WX49 47" Rear Projection...

1 Answer

3 curved lines top & bottom/blurred picture

This indicates a convergence problem..convergence power supply probally.. however ive seen 2 other cuicits cause this ..

Sep 24, 2007 | RCA HD52W59 HDTV Projection Television

1 Answer

Toshiba 43H70 HD Projection TV

this is a convergence failure, there are hundreds of posts about it on this website you should be able to find everything you need

May 23, 2007 | Toshiba 43H70 43" Rear Projection...

Not finding what you are looking for?
Toshiba 43H70 43" Rear Projection Television Logo

Related Topics:

216 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