Question about RCA F32450 32" TV

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My RCA F32450 is whining as well

My F32450 (2002 model) when plugged in has a loud whine with no pic. Is the fix a IHVT # 257805?

Thanks

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  • tw_Ohio Aug 19, 2008

    thanks

  • tw_Ohio Sep 03, 2008

    ok, found the focus by looking at the part that was removed. Still trying to dial it in, seems to be very difficult to get a clear picture again.

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Yes + replace the Horiz output transistor = part # 237470.
Then adjust screen control on new IHVT to same position as
original........ + or - a little bit OK. Then reset focus as needed..
Let me know how it goes.....................T.

Posted on Aug 19, 2008

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1 Answer

I have a RCA 32 TV made in 2002 It shuts off and turn and nothing


If its a F32450 it is prone to two parts failing.

I presume you mean you turn it on and it shuts right off.

A question? I you unplug it and plug it back in do you hear a high pitched whine for a moment or longer/

This model (along with some others) has a problem where the High voltage Transformer fails.

It will usually take a transistor with it. I have fixed dozens of them and usually just need to replace two parts:


Transformer is location LL05 and part number is 257805.

Transistor is location TL02 and part number is 237470---generic number is 2SC5148.


The giveaway is if someone checks the transistor and it is shorted--the transformer got it.

I can tell you a place on EBAY that will have both parts for less than 30 dollars total.

Clearly, I do not know if you can do this repair--I do this for a living and replacing both parts in this set takes less than 20 minutes.

Let me know if you have questions and I will try to help you---

If this helped you at all rate this solution as I do this here for free.

SD TECH .

Dec 19, 2009 | RCA F32450 32" TV

1 Answer

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This is a coil, now a NOISY coil.. It is a common problem, and happens often. The whine is caused by current passing thru the copper windings and making them vibrate! A commonly accepted repair for this situation is to squirt some regular old super glue into the copper windings and let it harden for a few minutes..Viola! no more whine!

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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!!!

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1 Answer

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The squeal maybe produced by the flyback, It looks like is a common defect on this chassis, but check any other defective part in the horizontal section and the power supply as well.
The fly back part # is 257805 but i would call RCA just to verify it or you can check inside the Tv's lid for that part number.
Check globalsemi.com website.
Good Luck.

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IHVT # 257805 or ASTI 2078 = 20.00.......................T.

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Probable bad IHVT ( aka flyback transformer ) part # 257805
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1 Answer

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Most RCA repairs on your chassis series require a new IHVT,
AKA flyback transformer . Inside an Integrated HVT are diodes
that can degrade and give the appearance of a bad cap....
Of course, you should check the electrolytics with an ESR
meter, just in case....

xformer part # 257805 or Asti 2078........T.

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