Question about Pioneer SD-643HD5 64" Rear Projection Television

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Color Problem on SD-643HD5 (Green is not working)

I have a Pioneer SD-643HD5 TV that have recently been giving me some problems. When I turn on the TV, only red and blue would show up. This happens in normal channels and also HD channels. If I wait for about 15 minutes, the green would work again and everything would be back to normal. Is this something I could easily fix? If so, please help me. Thank you very much...

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  • MGMG Nov 29, 2007

    I have the same problem. Did you get it fixed?

  • jorgeady Sep 25, 2008

    we have some sirius problems and we realy recomended not tobuy this tv,you be waisting your time and money,



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I had a similar problem with my Green CRT. Fixed it by carefully touching up some solder connections.

1) Locate the Green CRT Driver Board mounted on the bottom of the Green CRT.
2) Locate the two large heatsinks on the driver board. Each has a transistor attached to it.
3) Carefully touchup the solder connections on each transistor. I added some additional solder to help reflow the solder onto the pad of the circuit board. It's a bit tricky because the solder has to fill a large gap between the small leads of the transistor and large holes in the circuit board.

Posted on Sep 15, 2008

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Either its a bad green CRT or a driver issue to it. In any case not for the novice to fix.

Posted on Apr 24, 2007


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