Question about RCA P46924 46" Rear Projection Television

1 Answer

High pitch noise..from TV

Hello I had an issue a while back with the picture bowing at top and bottom well I fixed that problem. Now everytime I turn on the TV there is an annoying high pitch sound coming from it. Sometimes it will always be there and other times it will fade in and is what is on the back of tv. service no. = P46924YX5 MODEL = P46924 SERIAL NO = 051441559 CHASSIS NO = PTK195M2A I hope this will help ...what is causing this and how can I fix it.....If info is needed that I didnt provide just let me know I will get it for you..... thanks so much in advance..... erbossman81

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert who has written 50 answers of more than 400 characters.


    An expert whose answer gotĀ voted for 20 times.

  • Expert
  • 192 Answers
Re: High pitch noise..from TV

The high pitch squeal you hear is usually caused by a coil vibrating, normally in the horizontal circuit. I've also seen the ferrite bead on the horizontal output transistor do this, but, it is rare. I normally will repair this by finding the coil and "tightening" it. To tighten a coil, technicians use different chemicals, such as, a hot glue gun, rubber silicone or even finger nail polish. I will find the coil that screams by starting with the usual suspects and using a wooden dowel, barely touch the coil and if the pitch of the noise changes, then, thats the coil that needs repaired. If you do not know your way around the inside of a television, I never recommend you do so, since, this procedure must be done with the set turned on and you poke your hands around the inside of the set by the high voltage circuit. Hope this helps your decision.

Posted on Mar 04, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

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 Projection Televisions

1 Answer

High pitch noise, no picture. GE 52" projection, Model D52GW12

Ur high voltage FBT the flyback tranformer,a big black block of plastic with a gray wire connected to a board.The cap it dead.The FBT it useally it dead too,arching noise FBT not holding the high voltage.

Mar 30, 2010 | GE D52GW12 52" Rear Projection HDTV-Ready...

2 Answers

When i turn the tv on ,sometimes i hear a high pitched fan noise.

Hi, bearings in color wheel are about to fail, get it fixed now before the wheel shatters the prisms all over the inside of the tv which of course will then cost you more to fix, video-tek

Jul 01, 2009 | Samsung DLP HL-P4663W 46" Rear Projection...

1 Answer

Cheap Fix?

I will strongly advise you to replace the two STK392-120 as a pair. and this will cure your bowing picture problem. You may need to re-converge your set. best of luck.

Nov 05, 2008 | JVC AV-48WP30 48" Rear Projection...

3 Answers

Won't power on

my d52w19 chassis itc222 as posted most of the time wont turn on and the green light flashes three times every time it makes a small noise. sometimes it does turn on and you hear a little pop and the tv fires up.  latley there is a really high pitch noise that will slightly change pitch if you move the tv or put slight pressure on the top or botttom rear part of the chassis. thanks for the help as I have seen that this has been posted before without mention of the high pitch noise.

Aug 23, 2008 | RCA D52W19 52" Rear Projection Television

2 Answers

TV making high pitch sound

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.

Apr 21, 2008 | RCA HD52W56 52" Rear Projection HDTV

1 Answer

Problem with convergence

bad convergence ic's

Jan 03, 2008 | Philips Magnavox 9P6034C 60" Rear...

1 Answer

High Pitch Noise

there has been a few cases of a coil in the cuircit whinning. and there is a simple fix...applying some silicone onto the coil to dampen it. the coil is ll037 on deflectin board. location m2 a black compnent with coil of copper wire wrap around it. thats my initale thought. it may be more. since you still have a picture.. any questions email me at

Dec 10, 2007 | RCA D52W19 52" Rear Projection Television

Not finding what you are looking for?
RCA P46924 46" Rear Projection Television Logo

86 people viewed this question

Ask a Question

Usually answered in minutes!

Top RCA Projection Televisions Experts

The Wyzzyrd

Level 2 Expert

83 Answers

D. E. Hev

Level 3 Expert

1059 Answers

Ron Dufek
Ron Dufek

Level 2 Expert

397 Answers

Are you a RCA Projection Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides