I've got a 40" LCD philips 40pfl7705dv/f7 that when I plug it in, it clicks twice, and after about 60 seconds, the screen will come on for 3 seconds, then it powers off.
Plug it directly into a tested wall outlet, not a multiple. Turn on directly from TV not remote. If it happens, don't unplug, just restart. What's the result?
It's probably the capacitor(s). If you feel safe working with electricity, there should be a schematic in the paperwork you got with the TV or it's available on line. If that's not it, a new power supply (test first) might be more than the TV is worth based on how much prices have come down.
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