Question about RCA Scenium D40W20 40" Rear Projection HDTV

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No picture or sound - TV makes chirping noise

When the TV is plugged in there is a distinct chirpin noise. The TV will not display a picture or sound. The TV is an RCA projection TV (model P60921YX1). No repair activities have been taken at this time. the sound is okay . . . picture is fadding in and out . . . then no picture

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  • Merlin775 Mar 01, 2008

    My exact same TV is acting similar except mine is actually throwing sparks from the rear left. I have unplugged the TV and removed the back panel. It appears that it is orginating from the back left. Ironic part is that it is 3 years to the day when I bought it. Any suggestions.

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The chirping sound is the power supply coming up then breaking down because there is a short somwhere in the high voltage. The most common fail in this area is the horizontal output is shorted ( 237470 ) but what cause this short could be simple cold solder joints or the High voltage transformer ( 239111 ) If you have noway to "ring" the flyback change both parts

Posted on Feb 14, 2008

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Posted on Jan 02, 2017

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Please Help!


A chirping sound from a TV set is the switch mode power supply trying to start up, but gets shut down because of a major short inside the set or in one of the circuits.. Most likly in this set, the horizontal output transistor is shorted because of a defective flyback transformer. Thats whats the common problem is with this set. A repair like this, if this is the only parts that are bad, will run you about 300 to 400 bucks or so. In some cases, not many but a few times, I have seen poor solder connections on L401 cause the horizontal output transistor to go bad. There are no user replacable parts inside this set, so please play it safe and seek out a pro to assist you in this repair. Good luck PS Please do not forget to rate this thread.

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