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Default RCA TV(s) Turns Itself On and Off

I am a retired consumer electronics repair tech.

Recently, my 14" RCA, (CRT) model 14F512T (mfg. 2006) began turning
itself on, then off.

I remember years ago, I had the same issue with a 27" RCA (CRT) model
27V412T doing the exact same thing. I discovered that the on/off power button
switch on the front panel was the cause. Even though the button switch
checked AOK (no "leakage current" between the contacts using a 50V leak test),
I decided to open the circuit so the switch is "disabled". That fixed the
problem. Note: Remote turns the TV on/off.

I did the same thing with my 14" RCA TV, and that fixed the problem.