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Hi pitch noise from the back near the top of L.c.d flat screen had to send two back and now have a sharps set which makes a noise now and again is it a normal issue

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You could have a electricial short or a oscilating transformer ( a transformer that is viabrating ) that it is coming from the top could mean that is high voltage. Do you have a lot of dust in the house ? that attracks high voltage.

Posted on Nov 07, 2008

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Toshiba HD ready TV ct 90158 makes high pitched sound


A high pitch sound can be a capacitor losing power it would sound a bit like a fire work. most have back up on the board but it put more pressure on them the more times you use the tv. would check them and replace. all of them can be 5 in a row in some models.

Oct 23, 2013 | Toshiba Televison & Video

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Samsung dlp tv HLP5663W makes loud noise


Yes, the set uses a color wheel and the lamp faces it.

The wheel turns at over 8,000 rpm and is well known for this problem=bearings in the tiny motor go bad.

The high pitched or fan like noise (classic description) is this part.

Sooner or later the wheel (plastic colored segments) will shatter and set will shut down lamp and not operate---set monitors the speed of the wheel so if it slows down or stops it knows.

The part is readily available on the internet (Google the model number with "color wheel").

This can be a do it yourself repair and You Tube has video instructions for replacing the wheel by model number.

There are two common pitfalls to avoid which the instructions that come with the replacement part usually do not mention---if you decide to do this repair let me know and I will explain.


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SD TECH

May 26, 2012 | Televison & Video

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I have a Samsung HLT6176s and the lamp went out. I bought a new one, then 2 days later the screen faded to black then cycled off and on with no picture. I left it alone for a few minutes then i it turned...


Remove the lamp especially if you heard a high pitched whine/fan like sound or even a grinding noise.

Look where the lamp faces and examine the color wheel (common failure part in these sets) to see if pieces are broken and missing or the wheel is shattered.

If so it can be a do it your self repair as You Tube has video instructions for replacing the wheel in these sets.

SD TECH

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Apr 23, 2012 | Samsung Televison & Video

1 Answer

HI Pitched Squeel


Please Post your Make and Model number printed on Back of TV.

May 11, 2010 | Televison & Video

1 Answer

Screen suddenly turned off, makes an odd high pitched noise when it tries to turn back on. power button flashes orange


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.

Jan 07, 2010 | Panasonic PT-50LCX63 50" Rear Projection...

1 Answer

G36710 RCA console TV just quit while watching... makes noise


a shorted horizontal output transistor will make a funny squeek or chirp noise when turning on the tv. Usually mounts on a metal dissipator near the bulky plastic part with the red thick wire coming out of it.good luck!

Aug 06, 2009 | RCA D52W19 52" Rear Projection Television

1 Answer

Loud high pitch noise


The Transistor H.O.T maybe shorted , Get a technician to have a check.

Jun 07, 2009 | Televison & Video

1 Answer

Little to no sound


There is a very tiny switch on the back of the set near the external speaker terminals. This switch has likely gotton put in the wrong postion.

Aug 02, 2007 | Toshiba 55HX70 55" Rear Projection...

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