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P.c. is powered up and a high pitch sound is heard and the keyboard, display and mouse are not working

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Will sorry to say but your computer is dead

Posted on Apr 24, 2010

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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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My tv powers on displays the LG logo then makes a high pitched squeal sound from speakers and then flashes on screen (strobe light effect) does not display picture or sound.


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Dec 16, 2015 | LG 55LE5400 TV

1 Answer

Some keys not working, makes a high pitch noise when switched on


The high pitch sound may be the power supply adapter, unplug let it run on battery, if sound goes away change the power supply, the laptop keyboard will need to be replaced, go to www.ebay.com Type make and model of laptop, refine search to keyboard and power supply if needed.

May 03, 2012 | Acer Aspire One AOD150-1165 Notebook

1 Answer

I have a newer model GE dishwasher. About a couple of weeks ago we lost power to home. When power was returned the dishwasher was making a high pitch sound and power was not returned to the front...


Hello

High pitch sound comes when the main control also known as the electronic board goes bad and needs replacement. Please try to blow air with hair dryer on the display just to check if that'll solve the problem. Hope you understand...If it does not then replacement of part is only recommended repair. Please get back to me if you have any other questions.

Kevin

Nov 11, 2010 | GE 24 in. GLD5560LSS Stainless Steel...

2 Answers

The mouse has lost its air feature. Still works from a desk as an optical mouse. Produces a high pitched sound .


Sorry my reply is five years after the question but I really hope this reply can help anyone out. I have a gyration GYR3101US Media center remote.

mouse-lost-its-air-feature-still-works-nec1hkrws0ash25xby3rpbkt-5-0.jpg I love this remote/air mouse but after I dropped it about two months back anytime I would try to use the air mouse, it would emit a loud high pitch sound and put the cursor near the time clock unable to move it. Tonight I took it apart. this is what I found. There is one screw behind the batteries, then you have to pry it apart with a flat head. once inside find the gyration sensor
mouse-lost-its-air-feature-still-works-nec1hkrws0ash25xby3rpbkt-5-4.jpg CAREFULLY pry apart the sensor with a little flathead, there is a metal plate on the bottom of the sensor so DO NOT pry from the circuit board up that will break the sensor off. Put the screw driver between the metal plate and the outer casing you should see a little crack. also i cut most of that red tape off with a razor blade before prying.
mouse-lost-its-air-feature-still-works-nec1hkrws0ash25xby3rpbkt-5-7.jpg The red arrow is pointing at the part inside the sensor that had come lose from the drop and was moving about freely inside. I'm guessing it's a weight or magnet. After carefully and gently snapping it back in place, put your mouse back together enough to test it. at first it still had problems but i double clicked the mouse movement button and set it on a flat surface so it could calibrate itself. SUCCESS. I hope this helps my gyration is working fine now. contact me if needed john4628 AT gmail. (There are no fans or bearings in this mouse or any gyration mouse)

Feb 05, 2010 | Gyration GO 2.4 Air Mouse/Compact Keyboard

1 Answer

Monitor Goes black, or flickers on and off


The high pitch sound is coming from the inverter. It is faulty and needs to be repaired or replaced. The inverter supplies high voltage to the CCFL lamp, this lamp gives the backlight to the LCD so you can see the LCD images.
Check out LCD parts for parts, service and DIY info. use this link :-
www.lcdparts.net

Aug 29, 2009 | ViewSonic OptiQuest Monitor

1 Answer

Rca 27410tyx1 will not shut off


Sounds like trouble in the standby/power up circuit. have you tried unplugging the TV for a half hour and seeing what happens? It might start up but I think this problem won't go away. If you heard a high pitched buzzing it sounds like a problem in the high voltage not letting the start up circuit work. threy are related. The start up circuit waits for the high voltage to stablize and then switches it on.

Sep 16, 2008 | RCA TruFlat 27F520T 27" TV

1 Answer

My Moniter won't work!


That high pitched sound in one way is a very good thing. It pretty much points out the source of the problem itself. That is more than likely either a blown capacitor or transformer on the power source inside the monitor. I would rule out the power inverter for the LCD backlight because the power light will not turn on either. I have found that Samsung is very good with their repairs, and if it is a somewhat recent model they should be able to get it drop ship repaired with little expense. That can be an inconvenience, and if you do decide to replace the monitor altogether, please be eco-conscious and have the old screen either donated to a goodwill organization where scavengers like me will buy it for raw parts, or to an electronics recycling center. E-Waste is becoming a very large problem and LCDs and flat screens are a hefty piece of it.

Jul 08, 2008 | Samsung 226BW Monitor

1 Answer

High pitch sound from the speakers


Is the noise present even when there is no input?

Jan 27, 2008 | Olevia LT32HVE 32 in. LCD Television

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