1? you must test the power supply, the absence of this cause a LOT of problem, test a= fuse, filter, c.breaker rectifier.
2) test the tuner, i-f, video detector, AGC, section
3) if the tv has external POT adjustment for vertical, horizon, do it carefully.
4) tight any wires connector loose, or bad contacts.
God bless you
see the diagram
when pluged the power, power on and off with in a second.
My Sony kp-61S75 have the same issue. The power come on and off in the matter of second. No sound and no picture. What I need to do?
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