Pioneer SD-643HD5 64" Rear Projection Television Logo

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Vince Vince Posted on Apr 23, 2007
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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...

  • 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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  • Contributor 7 Answers
  • Posted on Sep 15, 2008
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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.

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  • Posted on Apr 24, 2007
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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.

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Pioneer 65" TV Model # SD-643HD5 won't power up.

I would suggest replacing the board itself, chances are what caused those fuses to blow is still faulty. did you check those fuses again after you powered it back up?
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I have a Pioneer SD-643HD5 that was working and then just turned off? Now the tv won't turn on

CK for Blowed Fuse will be in middle of chassis 6amp fuse if it is blowed set will not come on.
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Pioneer sd-643hd5 rear projection 64" tv has green geometry grid problems

http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
Sony Convergence
http://www.techlore.com/blog/entry/19694/Sony-Convergence-Repair-My-Sony-TV-has-a-distorted-picture-/
http://www.techlore.com/article/19631/Sony-Convergence-Procedure/
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Intermittent losing blue on SD-643HD5 Pioneer

check the convergence area for bad solder
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
Sony Convergence
http://www.techlore.com/blog/entry/19694/Sony-Convergence-Repair-My-Sony-TV-has-a-distorted-picture-/
http://www.techlore.com/article/19631/Sony-Convergence-Procedure/

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Picture is green and stays green

check the convergence area for bad solder connection
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
Sony Convergence
http://www.techlore.com/blog/entry/19694/Sony-Convergence-Repair-My-Sony-TV-has-a-distorted-picture-/
http://www.techlore.com/article/19631/Sony-Convergence-Procedure/

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