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Toshiba 43s7da rear projection tv ... turn on the power and I just get alternate flashing red & green LEDs ... what could be wrong ? Thanks. Ed Donnelly

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Posted on Jan 02, 2017

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SOURCE: power button flashing red

stk convergence packs may haqve failed in the dead short mode stk392-110 removing them from circuit may allow the set to turn on again good possibility do you know how to solder?

Posted on Dec 09, 2006

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SOURCE: Akai PT4298HD Rear Projection Television Problem

My AKAI 42 rear projection self focus set has blue shadows on everything and too much red, I cant seem to adjust it and self focus does not help?

Posted on Mar 23, 2009

SD Tech
  • 14553 Answers

SOURCE: Toshiba 51HX93, rear projection T.V. Green convergence problem

You will need to change both of the Convergence IC's----if you go to the trouble to just change one the other will fail in a short time---what happens most of the time is the white heat sink grease that was applied to the back of the two chips has dried out and one gets too hot and fails.

Most of these sets use 2 STK-392-110; WITH THE BACK OFF use a flashlight and you should be able to see the number on them; they are located on identical metal heat sinks with fins.

If this has been helpful I would appreciate a vote from you here. If you require more assistance respond to this post and I will help.

Posted on Aug 17, 2009

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Thanks for this forum.

I have a Toshiba 48" rear projection TV which started to show red and green lines on the left side of the screen and have also started affecting the left-hand focus of the image shown on the screen. I have had this TV for 14 years and had a projection adjustment done once before.

Thank you in advance for your assistance.

Ed Alexander

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