Question about GE 31GT740 31" TV

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T.V. SQUEALS I have had this t.v. for 4 yrs it does not have a picture nd it squeals when i plug it up what is the deal can it be fixed and how much

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Re: T.V. SQUEALS - GE 31GT740 31" TV Standard (CRT) Televisions

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Posted on Jun 21, 2007

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2 Answers

Screen goes blue and returns if cable cord moved

try do the same thing using the dvd or cd player plugged in.

Oct 21, 2008 | JVC AV-36890 36" TV

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No picture or sound

Does it make a squeal sound while plugged in to power? If so, possible horizontal output shorted. $150-$200 about.

Apr 17, 2010 | RCA 27V514T 27" TV

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After tv is on for approx 20-30 mins it starts to make a loud high pitched squeal or whine. once turned off for approx 10-15 mins can turn it back on for another 20-30 mins before squeal will return....

Sounds like a problem I had with a Polaroid t.v. Take the cover off the back and look for capactors that are buldging on the top. The top should be slightly concave. If they are convex at all, you can buy new one at Radio Shack and replace them for under $5.00

Apr 10, 2010 | Emerson EWF2004 20" TV

1 Answer

I have a Toshiba 27AF42 and I get a high pitched squeal after the TV has been on for a few minutes. Any ideas how to fix this? Once I turn the TV and back on again the squeal goes away.

yes. its the horizontal linearity coil resonating. take off back. and while unit is on, take a plastic straw and push on coils in the high voltage area. you will find one that squeals when pushed on, or will stop squealing when pushed on. solder that coil and area. that will fix 80 percent of the time. if you push on it and the squeal tone changes, solder it and silicone it done. fixed.

Nov 14, 2009 | Toshiba 27AF42 27" TV

1 Answer

I have an RCA G36710 tv and there is no picture and it squeals

its in the horizontal circuitry,sounds like an electrolytic capacitor has changed value and thrown frequency off far enough to disable the t.v.

Nov 08, 2009 | Standard (CRT) Televisions

1 Answer

Won't turn on - relay clicks, power supply squeals, relay clicks, etc,

The television has a protection circuit. Sound like you know something about electronics so that is cool.

I suspect the HOT or High Voltage Transformer. If you want to operate on it, they typically will short externally from moisture or plastic high voltage breakdown. The TV starts, shorts as it cannot come to full high voltage, then shuts down. If your brave, you can unsolder the HOT which is the part that is on the main board or that comes from the top of the picture tube wire into a dark or spaceship type object.look underneath, sometimes they short underneath and you can scrap the carbon and get it to at least start up and work. Do not leave this as a fix as it can be a fire hazard.

The HOT is the most common. They are around 20-60 bucks. 34" TV. I am assuming this one without looking it up it is NOT a flat screen, as most do not squeal like that nor do they have to de-gausse like the old ones. I just looked it up and yes it is not a flat screen. Old school, so that is more thank likely the problem.

Mar 02, 2009 | Zenith C34W37 34" TV

1 Answer

Won't turn on - relay clicks, power supply squeals, relay clicks, etc,

need check B+, standby power supply, and Horizontal defletion and components

Oct 23, 2008 | Zenith C34W37 34" TV

1 Answer

Now it squeals when turned on

That is a CTC203 chassis that is VERY difficult to estimate without seeing it... The "squeal" symptom you described indicates that the HOT (horizontal output transistor) has shorted. (Q14401 RCA p/n#242224 (2sd2578)). But I would not stop there... Check also: Q14101 RCA p/n#244223, R14107 p/n#244214 (43 Ohm 1/4 Watt) and really go over the underside of the board for poor solder connections. Tri State Module can rebuild that board to like new for $100.00 dollars plus shipping. and even if a shop locally did the teardown and re-assembly that's a lot cheaper than the cost of a new TV of comaprable value. Hope this helps! Bill

Jun 04, 2007 | GE 31GT740 31" TV

1 Answer

Squeals Like a Pig


Nov 06, 2006 | GE 31GT740 31" TV

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