My rca tube tv has a high pitch whine when i plug it in no picture also

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 ...

www.tomsguide.com/forum/60895-6-help-high-pitched-noise

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

Ur tv the high voltage it dead,the FBT,the flyback transformer.The big black block of plastic with a red wire with a black cap that hook up to the CRT(tv tube) is dead.The FBT,flyback transformer needed it to be replaced to solved this problems.Call the shops,take estimates for the best deal to do the repair.This is one of the main part of the tv to put HV in CRT(tube tv).It pretty hard to find this FBT these day,because of the discontinue of making of Amalog tvs.

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.

First, you will want to isolate the problem. Is it feedback from an AC outlet you have it plugged into? Is it a recent noise that just started with no changes to Tv or its environment, then you may want to consider that a circuit is going and decide if it is worth repairing, You should find that type of fix at a shop for under $100

There is a short circuit in the high voltage circuit. the transformer who helps to create the high voltage or his power transistor is damage. replacement needed. the repair is not expensive, because the parts are average repair. Ask for an estimate.

I haven't worked on an RCA DLP but have on Samsung DLP, based on your description it sounds like the color wheel is bad. Take the back off and turn on TV make sure its not a fan making the noise ,but most likely its the "wheel" it is inside the light engine probably right next to where the lamp is plugged in. If the whine comes from this area definitely the wheel.

Hello randapaint,

This might be from the IHVT (Integrated High Voltage Transformer), or more specifically a short in the IHVT causing it to arc, producing the high pitched whine, you are hearing. Take the back off of the TV and try to detect where the sound is coming from, more then likely you will notice it coming from the section that contains a large component with a large red cable coming from it, to the top of the CRT (picture tube). Replace the IHVT (with the exact same model) if it is bad.

I hope this helps,

Thank you,

Shuttle83

http://www.electron-age-technologies-llc.com

Sounds like a tube TV . If so I believe the tube is cracked not hard to do during moving Ive done it before. it can be replaced for around 125$ to 200$ look at how much your TV is worth and if it does not exceed the value of you unit . Then locate a repair shop in the yellow pages.

It looks like the squeal or high pitch is produced by the flyback part # 257805. Also check the the secondary side of the power supply for around 130VDC if that voltage is found to be lower than 120VDC I would suggest to replace CP80 with a 100 mfd@250 vdc. Part # 218374
Globalsemi.com has these parts, for the flyback transformer just type in search for FLY-391, this one is cheaper than the genuine(257805) fly back.
Good Luck.

This set is famous for this. It could be the main power supply has a short in it but most likely the Horizontal output transistor is bad because of a bad flyback transformer. Not really a job for a novice to attempt as there is alot of High Voltage present on the picture tube. Good Luck