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

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52 in. rca high def. rear proj. making high pitch noise

Really loud high pitch noise when turning on unit. ever present (although sometimes barely audible chirping noise) Occaisionally the picture narrows slightly and returns to normal, when it does this the pitch of the chirping changes. I carefully vacumed dust out of the inards of the unit. That semmed to Help for about two weeks. please help.

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The set probably has lots of bad solder connection on the flyback and in the horizontal deflection circuit.

Posted on Feb 25, 2009

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