Question about RCA F36650 36" TV

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F36650 No power, high squeal even without turning on.

My set made the infernal pop and then the picture went out, has the squeal even when not turned on. Did a vac out of dust.

There looks like a cap that is shrunken on the main board under the tube, haven't seen one like that before.

Any suggestions on the problem and fix and also does anyone know what pins to short to make sure all the power is out of this?

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Re: F36650 No power, high squeal even without turning on.

CaptC, those sets are infamous for that problem, you need to replace the following parts:
Flyback Transformer part # 257805
Horizontal output transistor part # 2SC5148
there is a coil off the base of the driver transistor I think it`s L4401 that should be removed from the set and scrape the wax off the legs then re-install and re-solder it and you should be good as new, good luck

Posted on Nov 28, 2007

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Hi, I've got an RCA F36650, when I went to turn it one, I get sound but no picture, can't even get the menu. With the rear cover off, I can't see any lights at the back of the tube, suggesting to me that...


1. Check flyback
2. check poersupply <all fuses> Capacitor ect.
3. Recheck flyback its a common problem first then work you way down.

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Aug 12, 2009 | RCA F36650 36" TV

2 Answers


A shorted horizontal output transistor or shorted flyback. If the flyback is shorted replace also its HOT.

Apr 05, 2009 | RCA F36650 36" TV

1 Answer

TV has power, but picture or sound will not come on.

It sounds like something in the set has failed. These newer TV's have shut down circuits that won't let the set come on if there is a short or excessive voltage somewhere in the set. Most failures in TV's occur at the moment the set is turned on.

Jul 09, 2008 | RCA F36650 36" TV

1 Answer

RCA F36650 36" TV

is the squealing noise from the back of ur set , if so it is ur flyback transformer

May 29, 2008 | RCA F36650 36" TV

1 Answer

RCA F36650 Television . . .

It can be repaired. It sounds like a bad high voltage transformer or something in that circuit. I would take it to a TV shop and ask for an estimate. It might be costly to repair.

Apr 16, 2008 | RCA F36650 36" TV

1 Answer

Stopped working and squealing sound

Your set is shorted circuit condition. The power supply is making the noise. Unfortunately almost any of the hi current circuits will do this. If picture went out 1st look for video or hi voltage problems.

Jan 11, 2008 | RCA 32F531T 32" TV

1 Answer

No picture no sound only the power light turn on and off

Hmm, sounds like a fuse has blown, and this is a problem that I recommend only those comfortable around high voltages try to fix......

Dec 22, 2007 | RCA F36650 36" TV

1 Answer

No picture High pitch squeal RCA F36650

Confirm service # from back of set = F36650 YX01..........
Transformer red HV lead attaches to CRT & Horiz output
xistor is on heatsink next to transformer = 2SC5148 .........
Rca part # 257805 or ASTI 2078 and 237470 xistor............
Do not use a generic transistor = name brand only............T.

Please rate this solution..............

Nov 12, 2007 | RCA F36650 36" TV

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