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U have tools?U know basic soldering?Basic understanding of electronic's?Take the tv aparts,take out the power supply board.Look all around the pcb power supply board for those dead or dying leakages parts call capacitors,they all way bulges up it tops or puff up it tops.Replaced these dying leakages gases capacitors.Ur tv power will stop the random cylces power shutdown.
Ur high voltage FBT the flyback tranformer,a big black block of plastic with a gray wire connected to a board.The cap it dead.The FBT it useally it dead too,arching noise FBT not holding the high voltage.
Yes and No it depends on what is wrong If your luky it will be 3 capacitors on Deflection board cp150 2200uf 16v and cp114 cp120 220uf 35v capacitors they are green with gold writing on them If cp150 is puffed up on top it is bad. So then replace other 2 caps.
Your concern with an RCA D52W26 is when you attempt to turn it on, it powers up as indicated by the LED lights but they then power OFF a few seconds later? or it powers on then you get to see bright line(s) left to right, then the TV powers OFF? or it powers on but only bklinking LED lights? If yes on the last any sequence to the flashing/blinking?
Hope that this be of initial help/idea. Pls post back how things turned up or should you need additional information.
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