Question about Toshiba 55H70 55" Rear Projection Television

1 Answer

Toshiba 55" 55H70 model. Turns OFF, but won't turn ON until I unplug it from the wall first.

Toshiba 55" rear-projection TV Cinema Series - HDTV (1080i, 480p)compatible Model: 55H70. Bought it in March 2001. Problem: If I turn OFF the TV via the remote control or pushing the ON/OFF button. It will turn OFF. But when I go to turn it back ON, the red power light on the front just blinks. So I have to unplug it from the wall and plug it back in...then I can push the ON/OFF switch to turn it ON. Can you give me your opinion on what is wrong?

Posted by cwmmgm on

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  • cwmmgm Oct 31, 2007

    Here's a resolution that I received.  I have not done the repairs yet.  So I'm still unplugging it to turn it ON.



    **************************************************************************

    It sounds like your convergence IC's are going out.

    This is a common problem. There are two IC'c that control multiple functions and they are a high failure part due to running hot. There are also some resistors in that same circuit that will sometimes overheat and change values. The only other thing it may be is a yoke going bad, which is a copper coil that fits over the tubes. I've seen two yokes go bad compared to 100's of convergence IC's so its more than likely the IC's. You could wait until it completely quits working, or you could fix it now, but it will only get worse. You are not really doing any damage by playing it like you are, its just an inconvenience. The total cost to repair the convergence circuit would be $225, and if it was a yoke it would be $25 more. I have all the parts in stock so if you decide to fix it let me know and we'll schedule a time. Thanks for your inquiry.

  • Bartone Dec 26, 2007

    I have the same problem, it will turn off and 3 seconds later go out and flash and then it must be unplugged. Can I fix it at home

  • Anonymous Mar 13, 2014

    wont turn on 55 Toshiba tv

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  • 4,402 Answers

Sounds like loose connections on the convergance amps ic's
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Posted on Dec 25, 2007

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