Question about RCA D52W20 52" Rear Projection HDTV-Ready Television

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A high pitched tone is constant when the TV is on

When i turn on the TV a high pitched tone comes out of the back of the TV and is constant but varying in intensity

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The problem could be that of coil that has become loose and is vibrarating cause your squeal . Or it may be a transformer in the power supply that is also vibrating . These can only be replaced to get rid of your problem and you have to isolate which one is causing the noise . Good luck

Posted on Mar 11, 2008

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It most likely is coming (based on model number listed here) from the high voltage transformer---ways to silence that up to and including replacing that part.
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The colors wheel is dead.That why,u hearing high pitched whining sound.The colors wheel is spinning off of is motor axis and grinding it sides walls,that where the high pitched whining sound came from.Hire a tv Tech. for the colors wheel changing,because it requiring to take out alots of the machanicals parts itself,before u can come to the colors wheel itself to change it.

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1 Answer

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Sounds like there is a power problem if the neutral (return) wire on the power supply has become high impedance (or even disconnected) then you will get a high pitched sound coming from the TV PSU also the voltage that is presented will not be 240V which will give you the same problem.

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1 Answer

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the high pitch noise is from the HV. arcing acrss each other.
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1 Answer

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replacement of the color wheel is an option.. as a technician i dont find replacement all that difficult. finding one too replace it with is the most problem...

May 19, 2008 | RCA HD52W56 52" Rear Projection HDTV

1 Answer

High pitched whine


Ok maybe this may help .... there is a coil LL08 I believe... somtimes it creates a high pitch whine like you describe.. its stands up on the deflection board..it basicaly a large coil of copper wire....you can take silcon and put on the coil...in effect damping the ocillations...hope that might help

Mar 27, 2008 | RCA D52W20 52" Rear Projection HDTV-Ready...

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