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Sony wega kp46wt520 problems

Won't turn on and 9 blinks. TV guy said it is zero detect error need GPCB for $425.00... Help!!

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  • nansjs Apr 02, 2008

    Thank you. If you could tell me how to check the diode that would be great. The TV man warned me that one amp. could kill a person... so I am a little nervous, but 10.00 vs. 425. I'll give it a try. Also where to get the parts.

  • mshultz05 Apr 20, 2009

    The Tv does not turn on. But the stand by light flashes 9 times. What does that mean?

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Diode D6116 or D6301 on G board are open . Check the diodes and if open replace them that should fix your set about 10.00 if you need to know where to get the parts let me know and I will post the link. also tell ya how to check those diodes if you dont know how.

Posted on Apr 02, 2008

  • Sonny Berry
    Sonny Berry Apr 02, 2008

    you need to unsolder just one leg of each diode and lift it out of citcuit. Then place one lead of a ohms meter on each leg of the diode note the reading then reverse the meter leads on the diode. a good diode will have continuity in one direction and have no continuity in the other direction. If you get continuity in both directions it is shorted if no continuity in either direction its open either way change the diodes. Let me know the results of your test and I will then post the part numbers and ratings so you can order replacements. Be careful around the capacitors those can shock you if you touch their pins . They look like little towers in case you dont know just be careful not to touch the circuits where the capacitors mounted.

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