Panasonic TV After a power outage my tv will not come on. When i push the power button it just makes a high pitched whining noise

Barb, noise may be from a power supply/ transformer on it's way out.
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HELP what is that high pitched noise when tv is on

Is your LCD making buzzing or high pitch noise

TV not turning on; making high-pitched sounds - Tom's ...

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Nov 30, 2013 - 7 posts - ‎2 authors
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

Top 136 Complaints and Reviews about Funai TV ' Page 2

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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

HELP! what is that high pitched noise when tv is on? - TV - Audio ...

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Jan 25, 2013 - 3 posts - ‎2 authors
Hello, I hear this constant high pitched noise, almost like ringing, but even ... pitch

It's likely a capacitor associated with the power supply having gone bad.
It's obviously beyond your expertise to repair it yourself.
Find a trustworthy repair shop and take it there.

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.

Check the all the large capacitors or coils

Sounds like there is a power problem if the neutral (return) wire on the power supply has become high impedance (or even disconnected) then you will get a high pitched sound coming from the TV PSU also the voltage that is presented will not be 240V which will give you the same problem.

The orange power button means standby if you fix the PSU then the TV might work again but it may have been damaged by the PSU.

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.

maybe your you need a new cord

you have a short in the horizontal ckt,look for diodes,horizontal output it might be damage or a bad cap, if not the fly-back transformer is gone.

good luck


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jdosk-the high pitch noise you hear is generally from the horizontal output being shorted,the horizontal output is usually near the flyback transformer,get a digital multimeter to checkthis part.Let me know I'll try to help. cooltek Feb.16/08