Question about Akai PT5492S 54" Rear Projection Television

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AKAI PT5492S - Makes a ticking noise,black

AKAI PT5492S - Makes a ticking noise,black screen.

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Replace the horizontal output transformer--H.O.T / flyback transformer and horizontal output transistor

Posted on Sep 13, 2013

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This usually is indicative of the EXTREMELY HIGH VOLTAGE anode connection somewhere between the flyback transformer and one or more of the crt picture tubes or the splitter. Being that this circuit has a running voltage potential of over 30,000 volts if you are not familiar with these YOU CAN BE KILLED messing with it!!! What happens is that there is a breakdown of insulation over time usually from dirt or other environmental contamination. Usually a good cleaning and replacing the HV anode wire that has failed. (hint) it will be the one that the "ticking noise" is coming from. The ticking noise is actually the high voltage arcing to the chassis/ground.

Be careful!!!!

Posted on Dec 27, 2009

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Posted on Jan 02, 2017

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