Question about Sony PFM-42V1 42 in. HD-Ready Plasma Television

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GREEN ON LITE COMES ON, BUT EVERY FEW SECONDS THE RED STANDBY LITE FLASHES, THEN THE GREEN LITE COMES BACK OM.

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Sounds like the power supply. The supply checks for all the various voltages to be there - if they are not it shuts down. It then tries again. So if you are hearing the click in/out of the PS relay that's where the trouble is. Before buying another PS at least disconnect the Ysus and Zsus suppy lines to make sure they are not pulling it down. If they aren't - it's the power supply. It's a complex board (PKG-4014) and if you ever get a diagram I love a copy - they are never in the manuals. Mine was one of the 3641 regulator chips. Hope this is of some help.

Posted on Jun 28, 2009

Testimonial: "most excellent. turned out to be the z-sus board!"

  • optima208
    optima208 Sep 07, 2012

    I have the same problem with my Plasma, I disconected the Ysus and Zsus and the relay only clicked once(usually it clicks in and three seconds later it clicks out)

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