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RCA 31" TV pakes high pitched chirping noise

I have a 31" RCA TV Model# F31665 (service # F31665 YX1) that makes a chirping noise when plugged in. I replaced the flyback and that did not solve the problem. I listened to where the noise was coming from and heard it near the power transformer. I replaced the transformer and still the same results. I have soldered some loose connections and nothing. What am I missing?

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  • Chriss TV Jul 27, 2008

    the horizontal output was shorted thanks for the help!

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Did you check the Horizontal Output transistor to see if it were shorted, and also check the MOSFET of the switching power supply. 

Posted on Jul 25, 2008

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If your set is an RCA which I believe it is, you can contact RCA to find their part distributor for your area.

How did you determine that these parts are acutaly defective???

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As for changing the parts, you will require the proper tools and soldering equipment. After all the faults are found and the parts replaced, and the set is working, it is best to verify the power supply performance, the high voltage regulation, and the operating temperature of the various components effected in order to insure reliable after service operation.

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