Question about RCA D52W20 52" Rear Projection HDTV-Ready Television
Thanks for using FixYa. High pitch sound is caused due to power supply. You'll need to open the back of the unit and check/test HOT (horizontal output transformer) and flyback, replace the part that has gone bad however, replacing both the parts at the same time is recommended. Also check the power supply board for any bad components. This is only recommended if you have electrical expertise. Please accept the solution if the issue is resolved or post a comment for further assistance.
Posted on Oct 07, 2010
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Posted on Jan 02, 2017
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