Question about Toshiba 43H70 43" Rear Projection Television

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43H70 has sound by no picture

Hello all. I do build, repair and upgrade computers. Not like in the old days now. No more soldering cpu's and other componets anymore. : ) When I bought this tv, I already knew about the convergence problems some have. Been lucky for the last 5 going on 6 years with mine. I replaced my convergence IC's when last month, my tv would sometimes just shut down. It would come back on after it cooled off. Now it will only play sound with no picture. After about 2 minutes, there is a click sound and the sound goes off and the power led starts to blink slowly. Press the power on button again and the power led starts to blink rapidly. Figure maybe a fuse(s) went with the convergence IC's? I have no clue. Any help would be greatly appreciated. Have no manual for values for the works of this tv. Thanks Sam

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  • SSims921 Sep 13, 2007

    Thanks Srtech.
    Will check and get back.

    Sam

  • SSims921 Sep 16, 2007

    Hey SrTech.
    Again, thanks for your input. I do think you meant transfomer? No short there at the horizonal O/P transfomer. I did find a couple of bad looking solder joints and redid them. Haven't done any other trouble shooting yet, but now the set comes on with sound ( still no picture ) and stays on! No more blinking led. Guess the fail safe system was working well. Now to figure why the crt's are not kicking in!

    Sam

  • ljsomeday May 14, 2008

    I have sound but no picture, the light blinks. Never fixed a tv before. Last time I had it fixed the part was $5.00 and the bill was $500.00. Any help as to how i can fix this myself



    Thanks

    Lori

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Also check the horizontal o/p transistor for short if ok ,look on the deflection board and see if there are any b+ voltage markings and test with meter for b+.

Posted on Sep 12, 2007

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