Question about RCA F32450 32" TV
36" - F36650. When plugged in, a loud whine/squeal is heard. I believe it is coming from a transformer (horizontal transformer?). Also, while unplugging the set (or if it is left plugged in long enough) I can hear a clicking, I believe coming from this same transformer. It is not the flyback transformer, but a smaller transformer mounted on the board. Also, it is not encased (like the flyback is), I can see the E's and I's. Do these symptoms coincide with a faulty transformer (I believe it is a horizontal transformer)? If so, are they expensive, and where should I go for one?
The HOT Hortz output transistor has gone home, 99% of the time from a faulty IVHT (Flyback Transformer), very common on the ctc187cl* chassis. The factory Flyback is no longer available, I have had problems finding an aftermarket one to replace it with.
The HOT is a BUH517, but you can also use a 2SD5129. It is the transistor mounted on the siler heat sink with a metal clip rather than a screw, just in front of the flyback.....
If you replace just the HOT, most of the time you will get a rapid arc (27,000volts - BE CAREFUL!!!) from the lower (yoke) post on the flyback. If the flyback is shorted, It may also just burn out the HOT and go right back to "squealing"....
Good luck finding the flyback!!!
Posted on Feb 24, 2009
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Posted on Jan 02, 2017
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