Question about Toshiba 36A43 36" TV

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No picture, buzzing sound

When I tried to turn my tv on this morning I got a slightly high pitched buzzing sound but absolutely no picture. Any advice.

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Re: no picture, buzzing sound

It sounds like the horizontal output transistor may be shorted....Can you feel any static charge on the face of the pix tube?

Posted on Nov 16, 2007

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Was working fine last night ,went to turn it on and you can hear a buzzing by where you plug in your jacks a bee,or high pitch has no picture or sound.only sound you hear is this buzzing

Sounds like your power supply is causing the problem. Unplug the TV wait 10 minutes, look in the back for a red button (circuit breaker) push it in. If this does not work you have a low voltage power supply fault.

Mar 04, 2016 | Standard (CRT) Televisions

1 Answer

A loud buzzing is coming from the back of my sanyo ds 25390 tv. picture and regular sound is fine

If it is a high pitched whine or buzz it is likely a transformer vibrating so hard it is making the noise.

There are ways to try to deal with this issue but the set has to be opened and probed to locate where it is coming from--

for example with back off and set on a plastic rod can be used to touch areas and exert slight pressure until the sound changes or goes away--then either replace the part or I have used hot glue etc to stop it.

You first have to locate the source of the issue:

find where it is coming from.

Mar 24, 2012 | Standard (CRT) Televisions

1 Answer

High pitch squeal, buzz, no picture

Tossed the television and put a new one in.

May 16, 2009 | Panasonic Standard (CRT) Televisions

1 Answer

When my rca 36F530 tv is plugged in it makes a high pitched buzzing noise picture does not come on

There is a short circuit in the high voltage circuit. the transformer who helps to create the high voltage or his power transistor is damage. replacement needed. the repair is not expensive, because the parts are average repair. Ask for an estimate.

May 01, 2009 | RCA 36F530T 36" TV

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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

Rca 27410tyx1 will not shut off

Sounds like trouble in the standby/power up circuit. have you tried unplugging the TV for a half hour and seeing what happens? It might start up but I think this problem won't go away. If you heard a high pitched buzzing it sounds like a problem in the high voltage not letting the start up circuit work. threy are related. The start up circuit waits for the high voltage to stablize and then switches it on.

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Weird noise over everything

According to the Samsung website: "The high pitched sound you hear is probably coming from the flyback transformer. The flyback transformer converts the relatively low voltage electricity that comes from the outlet in your home to the high voltage electricity needed to drive the cathode ray tube in your TV. It is not unusual for a flyback transformer to buzz softly when it operates. However, if the sound is loud and high pitched, it probably means the transformer is failing. To eliminate the sound, you will have to get your TV serviced."

Nov 08, 2007 | Samsung SlimFit TX-S2783 TV

1 Answer

No Picture

Rarely picture tube also shows the same symptom. High pitch sound is due to through deflection area LOT power supply is loaded. Compulsary horizontal output transister short. From your statement i think Lot puncture takes place. Change LOT and horizontal output transister and check tv is now working.

Aug 23, 2007 | Zenith A32B86R 32" TV

1 Answer


The high pitched sound is probably comming from the power supply, possibly due to its trying to drive voltage into a shorted component in the high voltage deflection circuits. You may be lookng at about a $250 repair. If it has been used a lot and its picture quality didn't knock your socks off, I would replace it with a HDTV set. A 37 inch LCD from Toshiba might be a good place to start and should do nicely for you.

Jan 24, 2007 | Panasonic CT-36D11 36" TV

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