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No picture LG model 50PT350

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    No picture LG model 50PT350

    Hi guys,
    I have problems no picture with LG model 50PT350, first of all, I change the 2 buffer boards who was no good, the TV working 2 weeks and today same problem, I check and I found Zsus board defect now, I change it for a new one and no picture, I check VS VA and 5 volts , all this voltage are there, I disconnect the upper buffer board, no picture, I disconnect the lower buffer board, no picture, what I have to check now?
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    #2
    Re: No picture LG model 50PT350

    This model is cursed to blow up buffers until the end of time.

    I bet it's another buffer failure, even 1 pin shorted can make this happen and kill the Y-SUS. Defective Z-SUS could have induced Y-SUS failure the moment it happened.

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      #3
      Re: No picture LG model 50PT350

      Hi,
      thanks for your answer, I finally found bad solders on the YSUS board, now everything working fine!

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