Question about RCA HD52W58 52" TV

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Tv rings After turning on tv for a couple of minutes a high pich ringing starts

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Re: tv rings

In these sets, I have found that the squealing is caused by the horizontal transformer. It is caused by a part (usually a coil or transformer that is vibrating).
My shop will take a pencil ( with eraser) and just barely touch ( with the eraser side) the component that we think is making the noise. If the pitch changes or goes away completely then that is the part that is making the noise. If not, then we move on to the next suspected part.
When the part is found, unplug the set and apply a solution around the coil or transformer. The solution we use is fingernail polish ( I know, we are professionals, but, it has worked for us over 35 years). Let it dry, about 10 to 15 minutes.
When trying to detect the noise, the set must be running, do not put both hands inside the set at the same time and do not touch any part of the ground with that second hand.
Any questions, respond to this post and I will respond.

Posted on Jan 27, 2008

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How do you stop the tv from ringing? I turn it off and it stops but starts back after you turn it back on.

This is a bad capacitor or high-voltage transformer/power supply that will soon burn out. An ohmmeter will be needed to find the faulty capacitor or high-voltage transformer/power supply.

Jan 10, 2010 | RCA HD52W58 52" TV

1 Answer

Phillips TV

check the horizontal output ic or the flyback transformer

Jun 08, 2009 | Standard (CRT) Televisions

1 Answer

Half screen

Hello xmen0614,

If the screen is halved in a horizontal fashion meaning that the screen only goes up half way this is an indication of a vertical deflection problem, quite possibly the vertical coupling capacitor or a problem with the vertical drive signal. If the TV is halved vertically meaning the either the left or right side of the TV is black while the other has picture, this could mean a problem with the damper diode, the Horizontal output Transistor, or the horizontal drive signal.

In either case I would suggest doing a ring test on the Yoke Transformer, The IHVT (Integrated High Voltage Transformer).
Also check the Vertical coupling capacitor, and the horizontal drive transformer (Ring test this).

You noticed that I included the Vertical and Horizontal sections? This is because you did not mention which direction your screen was halved in.

If it is halved to to bottom check the vertical circuitry, If it is halved left to right check the horizontal circuitry. For either one do a ring test on the Yoke Transformer.

I hope this helps,

Thank you,


Mar 23, 2009 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

No vertical deflection,only a thin horizontal line.

Hello dede27,

I suspect you have some background in electronics so I'll ask you some questions.

First, I know that you changed the output ic and a capacitor, the capacitor caused excessive beam current, that's bad, remember that beam current is dangerous because it can produce X-Rays. Remember to use the exact value of parts for X-Ray generating areas of the TV. So replace the C555 with the rated value by the manufacture.

As far as the vertical deflection problem it sounds like you may have a shorted vertical deflection coil (part of the yoke transformer). I would suggest testing the coil to see if it is shorted (A ring test will determine this). The Sencore LC102 has a ring test feature or you can lookup how to build a simple ring tester. In any event replace the IC and test the yoke transformer for shorts on the vertical winding.

I hope this helps,

Thank you,


Jan 30, 2009 | Panasonic CT25G7 25" TV

1 Answer

RCA F27650 32" TV Problem

Hello ddw7321,

This sounds like it could be a malfunction in the High Voltage section of the TV. The shutdown circuit is switching on and preventing the TV from turning on. This might be due to an excessive amount of current flow possibly caused by a shorted turn in the Integrated High Voltage Transformer (IHVT), or a shorted Horizontal Output Transistor (HOT). To test this you will have to unplug the TV set, and with a multimeter set to resistance, measure the resistance from the collector of the HOT to ground, If it reads 0 ohms then that is the problem (a shorted HOT). The next test which is of the IHVT is a little difficult because it requires removing the IHVT and doing a ring test. At this point I would like to suggest that you take the TV to a repair shop, because these next test might be difficult for someone who does not know electronics, and if you have no knowledge of electronics you may do more damage then good.

With that being said:

Remove the HV anode of the IHVT connected to the CRT by first using a large flathead screwdriver connected with a clip lead to the ground of the TV, by sliding the screwdriver under the rubber cap and releasing the clips. Then unsolder the pins on the bottom of the IHVT using a soldering iron and a suction type desoldering pump. when the solder is removed , pull the IHVT from the circuit board. locating the main primary winding connect it to the device that you are using to perform your ring test (I use a Sencore LC-102), when it is connected do the ring test and it should have at least 10 rings to be considered good, any less then 10 and the IHVT is to be considered as bad.

I hope this helps.

Thank you,


Oct 04, 2008 | RCA F27650 27" TV

2 Answers

High pitch noise from LG Flatron TV

Hi there!
You may want to start by checking for suspicious looking components or hot spots. There may be some Caps faulty in the power supply or Horizontal. Good Luck, Jus004

Mar 15, 2008 | Standard (CRT) Televisions

1 Answer

High Pitch Sound From Samsung TXN3071WHF 30" TV

I think its the flyback and its starting to leak. this is a component responsible for the high voltage of your tv set. always observe safety in dealing with this. Have it check by a qualified technician. Good luck!

Feb 25, 2007 | Samsung TXN3071WHF 30" TV

1 Answer

No Picture/High Piched Sound

bring it to the authorise service center man, simple. Fred-Modern Home Qatar

Jan 26, 2007 | Panasonic CT-36D11 36" TV

1 Answer


The high pitched sound is probably comming from the power supply, possibly due to its trying to drive voltage into a shorted component in the high voltage deflection circuits. You may be lookng at about a $250 repair. If it has been used a lot and its picture quality didn't knock your socks off, I would replace it with a HDTV set. A 37 inch LCD from Toshiba might be a good place to start and should do nicely for you.

Jan 24, 2007 | Panasonic CT-36D11 36" TV

1 Answer

High pitched buzzing...

noisey yoke? Listen thru an empty paper towel roll cylinder to isolate---

Nov 17, 2006 | Sanyo DS27910 27" TV

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