Ask Experts Questions for FREE Help !
    chatfield58's Avatar
    chatfield58 Posts: 1, Reputation: 1
    New Member

    Mar 1, 2007, 07:39 PM
    High pitch whine in my TV
    I have a 52" RCA rear projection TV. It is now a year old. Last week it started a high pitch whining noise when I would turn it on... but not last but a few minutes. Today I turned it on and it has been whining that high pitch sound for 5 hours... I can't stand the sound... any ideas of what it is and solution to the problem?
    HVAC888's Avatar
    HVAC888 Posts: 674, Reputation: 75
    Senior Member

    Mar 2, 2007, 12:53 PM
    That high pitched whine is probably a cooling fan running at full speed. Maybe a faulty temperature sensor, since it went from lasting a few minutes to many hours. You'll probably have to bring it in for service.
    Uncle Fester's Avatar
    Uncle Fester Posts: 2, Reputation: 1
    New Member

    Mar 10, 2007, 12:19 PM
    How high is the pitch? A fan running at full speed really isn't that high pitched (maybe 5,000 Hz)-- when compared to the extremely high pitch of the high voltage supply (15,000 Hz or higher).

    There's no mistaking power supply noice: it's an incredibly high squeal that that seems to get into every part of your body no matter how you turn your body; fan noise changes intensity with eveery movement you make.

    HV parts can vibrate when loose, which leads to part failure because the part isn't able to dissipate heat quickly. A failing part can also lower the frequency the circuit runs at to the point you can hear it.

    Bring it in.

Not your question? Ask your question View similar questions


Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.

Check out some similar questions!

High Pitched Whine [ 1 Answers ]

I have a very perculiar problem with a computer I gave to a customer. It makes a very high pitched whining noise. It's not very loud, just loud enough to get hella annoying after a half an hour or so. I discovered that by unplugging the sound jack for the internal speakers from the back the...

High pitch noise from pipes [ 4 Answers ]

When I turn on the hot water I have a high pitch noise coming through the pipes. Is this a pressure build up. I just replaced a washer in the basement. Thanks

High pitch TV problem [ 2 Answers ]

Hello I've recently received a TV which isn't brand new but as soon as the TV comes on there is a very loud and annoying high pitched squeel, I was wondering if anybody could help me

High pitch noise from tub faucet [ 1 Answers ]

Lately my wife and I have noticed that when you tun of the faucet to our tub a high pitch noise seems to be coming from knob. If you only turn on the water a little bit this is when you hear the noise. Once its opened about 3/4 of the way the noise stops. Any ideas on what causes this?

Shower making high pitch whistling noise [ 4 Answers ]

My shower makes a high pitched whistling noise. This doesn't happen all of the time, and seems to be more pronounced when changing the temperature from hot to cold. It may come and go, or may make the noise during the duration of the shower. Any thoughts on what could cause this? Any help would...

View more questions Search