Question about Sony PFM-42V1 42 in. HD-Ready Plasma Television
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!"
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Posted on Jan 02, 2017
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