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erichw1504's avatar

Is there a way to stop my old television from making this high pitched noise?

Asked by erichw1504 (26433points) September 24th, 2009

My television is about 6 or 7 years old now, one of those ancient things with the huge back on it (not a flat panel). So, recently it has been making this really high pitched sound almost every 15 minutes or so when it is on. Turning it off for a bit usually stops the noise, but within a few minutes it returns. It’s gotten really annoying. Is it possible to fix it? What causes this to happen? Anybody else experience this before?

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17 Answers

CMaz's avatar

It would be cheaper to buy a new one. Meaning another CRT.
Then the cost of repair.

Its called Horizontal Reflection. Usually the sign of a bad power supply.

DarkScribe's avatar


Horizontal reflection???

Try Horizontal deflection transformer. When they get a dry joint or a shorted turn – before it gets really bad – they can make a noise often accompanied by a momentary horizontal collapse.

erichw1504's avatar

@ChazMaz Do you think it’s only going to get worse? And how long do you think it will last before it’s unwatchable?

CMaz's avatar

“Try Horizontal deflection transforme”

Yes you can say that too.

” how long do you think it will last”
1. Yes 2. Who knows. Today, next week. Next year.

DarkScribe's avatar

@ChazMaz Yes you can say that too. ???

I could say that “too”??

Hmmm. As it is the correct way to describe it, I suppose I could. There is no horizontal “reflection” componentry involved in CRT displays, TV, Monitor or Radar.

CMaz's avatar

ooops. My bad. Doing too many things at once.

Right. Meant Deflection. With a “D” not an ‘R”.

Thank you Mr. Wizard!

DarkScribe's avatar

@ChazMaz ooops. My bad. Doing too many things at once.

No problem, but the original issue is a common one and is often one of easiest fixed of any CRT display fault as quite often the problem is simply a solder joint going dry under the weight of the deflection transformer and the horizontal frequency vibration. Re-soldering the joints is sometimes all that it takes – but for a novice there is a risk of a very high voltage shock from the CRT if it is not discharged – even if the set is off.

erichw1504's avatar

@DarkScribe Yyyyeeaaaa… I’m going to have to go with buying a new TV soon. Thanks.

cbloom8's avatar

Does it sound like a buzzing sound? You might have some sort of vibration that is making the noise. If that’s the case, you might be able to open it up and figure out what is vibrating and stop it, but it would probably be easiest to just get a new tv.

erichw1504's avatar

@cbloom8 No, it’s a really high-pitched ringing sound, like when your ears ring.

DarkScribe's avatar

@erichw1504 No, it’s a really high-pitched ringing sound, like when your ears ring.

That certainly sounds like flyback transformer frequency – it is at the upper limit of human hearing.

XOIIO's avatar

With my experience with using high power circuits such as my DIY tazer
capacitors generally make a high pitched squeal. It’s perfectly normal, but if it hasn’t always made this noise I’d say something else it wrong.

DarkScribe's avatar

@XOIIO capacitors generally make a high pitched squeal

Capacitors make no sound at all, the high frequency circuit used to charge the capacitors makes the noise. That is why you can hear a photographic flash cycling.

XOIIO's avatar

@DarkScribe interesting…

wilma's avatar

My TV is also making that noise. My husband can’t hear it, only my kids and I.
It drives me crazy.
So if I understand correctly, it isn’t something I can fix, and one of these days it will go caflooey, and I can then convince my husband we need a new television?

CMaz's avatar

That is correct!

wilma's avatar

Thank you ChazMaz.
Now I guess I need to check around on here and find out what kind to television would be best to replace it with.

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