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Rca 27" flat screen has a high pitched whine when i plug it in and it will not turn on

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Power supply is out

Posted on Aug 31, 2008

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Funai tv. When plugged in, makes ear piercing high pitched buzz that goes away when unplugged. Will not respond to buttons. No picture or power. Already replaced power board. What now??


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Both of them are refusing to turn on, and make high-pitched sounds when plugged in and unplugged. More about : turning making high pitched ...Missing: ear ‎piercing

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We unplugged the unit and waited 15 - 20 seconds and plugged the unit back in, and it wouldn't ... He heard a loud high-pitched whining which led him to TV in my daughter's room. ... It only makes a humming sound now, no pictures at all.Missing: ear ‎piercing

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Hello, I hear this constant high pitched noise, almost like ringing, but even ... pitch

Jan 21, 2016 | Funai Televison & Video

1 Answer

Tv dead. high-pitched whine when plugged-in.


Sounds like the back-light inverter board has damaged. Check it.

May 21, 2013 | Emerson LC391EM3 39 in. LCD HDTV

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My RCA DLP seems to have a frozen screen.


Do some research as this model is also prone to the color wheel going bad---the high pitched whine or even fan like sound points to it.

Jun 05, 2012 | Televison & Video

1 Answer

A noise had been gradually increasing from a grinding sound to a high-pitched whine. COntinues until the screen is completely off. Sounds like a fan motor may be out of lubrication.


THAT TV HAS WHAT IS CALLED A COLOR WHEEL WHICH SPINS AT VERY HIGH RPMS AND CAN MAKE HIGH PITCHED WHINING/GRINDING NOISES IF A FAN WAS BAD THE TV WOULD SHUTDOWN AND THE SOUND WOULD BE MORE DULL SOUNDING.

Dec 17, 2010 | RCA Scenium HDLP61W151 61 in. HD-Ready...

1 Answer

High pitched whine/sometimes TV won't turn on


The power supply on this model will whine when it is shorted or overloaded - the set would have to be brought in to determine exact cause.

Oct 23, 2009 | Televison & Video

1 Answer

RCA F32650 production May 2003. Was working fine. Turned it on the next day, got no picture and a high pitched whining noise.  Please let me know what I should do to fix it.


If it weren't for the high pitch whining noise. I would say it probably is an internal fuse inside the chasis. It is rated at 1.5 to 2.0 amps. With the whining noise it sounds like a trouble shooting bench
job. Problems occur when a electrical/electronics device is turned on and turned off. Inrush voltage,
when it is turned on, can go up to three times more than normal. This also happens at turn off. Solid state components usually fail at this time. I don't feel that this is a problem that can be fixed in the home.---BBB

Jan 25, 2009 | RCA F32650 32" TV

1 Answer

My rca tru flat is NFG


The high-pitched squeal usually indicates that the horizontal drive circuit has failed as a result of a dead line-output transistor. This symptom indicates that the control circuit of the main power supply is trying to over-compensate for a greater than usual secondary current. Certainly, an inspection of the line-output transistor will show that it's most likely dead. Sometimes instead of the squeal you will hear hiccups instead. Focus your attention on the horizontal circuit.

Jan 06, 2008 | RCA TruFlat 27F520T 27" TV

1 Answer

RCA 20


sounds like the Power Transformer to me,  usually accompanied by a high pitch (almost inaudiable whine) and  sparks arcing.

 

This needs a professional repair..

 

 

Oct 11, 2007 | RCA F27252GY 27" TV

2 Answers

RCA 27r410t 27" won't turn on,just makes high pitch noise


that high pitch is comming from the flyback replace the flyback and the HOT.and you will restore back the life of your tv.good luck.

Jun 04, 2007 | RCA 27R410T 27" TV

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