Thanks for the help. My wife reported that when she went to turn on the TV this morning that the red light would not stay on. I started out looking for a schematic to see what was going on, suspecting some type of "latch" circuit for the power. I stumbled across this chat line to discover that C926, the 1000uF 16V capacitor might be the problem. I found a 1000uF 16V capacitor on a salvaged board from the past (incidentally about a 1/4 inch taller with the same voltage rating but a higher temperature). I tested the old cap, which showed about 880uF, not great but not terrible, so I was a little dubious that the capacitor was the problem. The replacement cap showed just over 1000uF. However, the replacement cap did the trick. This TV has been quite reliable, except for the power switch itself, which was overly exercised by a 2 year old a few years back.

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