Makes high pitch noise

Hello friend, thank you for your post!
Based off the information you have provided your Frigidaire refrigerator is making high pitched noises after the door has been opened. With our current refrigerators the new modern, high-efficiency compressors operate much faster than older models. The compressor may have a high-pitched hum or pulsating sound. If you feel that further assistance is needed please contact your manufacturer for any warranty coverage. -Matt

Samsung LCD TV with no video and high pitched sound - Digital TV ...

www.tomsguide.com/forum/54120-4-samsung-video-high-pitched-sound

Nov 8, 2015 - 25 posts - ‎12 authors
Our is the same model and has started making a very high pitched ... to acutally turn on and then when it does, the screen is still black and we ...

Is your LCD making a buzzing or high pitch noise ...

https://www.devside.net/blog/lcd-making-a-buzzing-noise

Dec 30, 2008 - In my case, the monitor was fine for the first two months. But then started making a buzzing noise... 1) when on, 2) worse when .... my Samsung TV ismaking high pitched noises even if its turned off. I will NEVER EVER EVER ...

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

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.

there isn't a colorwheel in the sp5000. it's an lcd, not a dlp. one of the fans is bad and needs to be replaced. the bearings might be going. you can get parts from an infocus service center or send it to them for repair. try av solutions in ny. they're really good. www.avsolutionsny.com

No, sounds like a bad bearing. But depending on who made it parts may be available. Don't know if it helps but I use a co. called GRAINGER, they are pretty helpfull. good luck.

Hi, There are usually 1 or 2 fans inside the TV's. Could be worn bearings, or fan blade interference. Sorry, without my electric ear working, I can only guess.

I had the same issue. The tech that came out today removed the transformer on the power supply board, "resealed" it, and replaced it (re-soldered the same part back on) -- the transformer apparently vibrates because it was not properly sealed. BTW, mine was about the fifteenth that he has performed this repair on within the past couple of months -- all 32" and 26" Samsungs. Now, it appears to be absolutely silent.

How deep do you want to get into this?It sounds like the wash pump motor bearings that are worn.You can pull the unit out flip it over and wd40 the bearings in the motor or you can replace the bearings.Try to lube them first.

replace thje diode cause noise , the magnetron are shortening need to replace magnetron /check the old m-=oven same brand and parts and replaceit.