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

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Piercing sound while a bit of t.v. watching, we seem to experience a piercing sound in the backroung that sometimes changes pitch when you try and shake the t.v...

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The high pitch squeal you hear is usually caused by a coil vibrating, normally in the horizontal circuit. I've also seen the ferrite bead on the horizontal output transistor do this, but, it is rare. I normally will repair this by finding the coil and "tightening" it. To tighten a coil, technicians use different chemicals, such as, a hot glue gun, rubber silicone or even finger nail polish. I will find the coil that screams by starting with the usual suspects and using a wooden dowel, barely touch the coil and if the pitch of the noise changes, then, thats the coil that needs repaired. If you do not know your way around the inside of a television, I never recommend you do so, since, this procedure must be done with the set turned on and you poke your hands around the inside of the set by the high voltage circuit. Hope this helps your decision.

Posted on Mar 04, 2007

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1 Answer

My watch stops working, the mechanism works on motion or kinetics. However, even with a bit of a shake it works for a bit then loses time and stops altogether
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