Question about Toshiba TP71G90 71" Rear Projection Television

2 Answers

Toshiba television convergence problem.

I have a toshiba TP71G90, I have a convergence problem. I allready changed the two stk's with original replacements and I still have the problem, It is a little better than what it was before but I can't adjust the convergence in the service mode. It does let me in the service mode but when I try to adjust the convergence by going to built in cross-hatch pattern but it will not show it, also if I try to go to the main menu to select the convergence mode there is no cross displayed. Can someone please help any ideas. I also changed the resistors in front of the stk's.

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  • angeldjr Oct 06, 2007

    Also my audio went out at the same time.

  • angeldjr Oct 10, 2007

    I checked the resistors and cap's and they are good, and also the audio went out so can it be something else.

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  • Master
  • 4,889 Answers

Yea, you have to have the two convergence Amp IC's replaced.
This is an in the home repair my friend. Can you solder on printed circuit boards?If yes then i can help you sort it out or if you want to play safe it would cost you somewhere b/w 300-600 bucks...Let me know what you wanna do

Posted on Oct 14, 2007

  • eagle338
    eagle338 Oct 14, 2007

    Sorry i did not see your coments...Your Problem is going to be on the convergence board, there is going to
    be a bad fuse,generaly it is going to cost 100-150 to fix

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  • Master
  • 790 Answers

Ok if you already replace the convergence amp, you can check all small parts like resistors or capacitors maybe you have change value parts at the convergence section!

Posted on Oct 07, 2007

  • carlos fernandez Jr.
    carlos fernandez Jr. Oct 10, 2007

    ok angel check all regulators! power supply! check the 5v 9v 12v and 14v. 7805, 7809, 7812, 7814,. you make sure that all voltage are in exactly in given voltage!!! if they have high voltage that is bad! because the said small voltages is for the system IC jungle IC chroma IC. very sensitive...

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