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Sanyo DP42840 LCD TV help

Discussion in 'Troubleshooting and Repair' started by Eric Umscheid, Sep 14, 2014.

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  1. Eric Umscheid

    Eric Umscheid

    Sep 14, 2014
    The power flickers on for 30 seconds then off then back on again in a loop with no audio or video. All voltage test points on the main board test good. No visible IC issues (cracks, burns) and caps all look good on both boards, no bulging. Also checked both sides of the main board and power supply board for bad solder spots but those look good as well.
    Found a new invertor board and replaced it but still the same. After about the 3rd time it cycles on and off the backlight flickers for a millisecond but then just keeps cycling on and off.
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