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 got 5 achievements.


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


    An expert whose answer got voted for 20 times.

  • Expert
  • 192 Answers

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


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

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??

TV not turning on; making high-pitched sounds - Tom's ... > Forum > Graphics Cards

Tom's Hardware Guide
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 > Electronics > Televisions

Rating: 1.1 - ‎65 votes
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 ...

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

Jan 21, 2016 | Funai Televison & Video

2 Answers

High pitch noise


Sorry to hear about your issue, let me see if I can help.

What type of tv is this? tube or flat panel? If tube, have you recently moved it and shook it up a little?
If panel, are you using an hdmi hookup or just regular cable from a cable box?

Be sure that your hookups are on tightly and that your cables are not tangled as well especially hdmi cable. Let me know if any of this is helpful in solving your issue or if I can be of more assistance. Once you respond I can help more, just need more information..


Feb 26, 2008 | Sanyo DS31520 31" TV

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 Televison & Video

1 Answer

TV picture compressed top and bottom, then turned itself off

hi i think you have trouble on the power supply section.

Aug 24, 2009 | Televison & Video

1 Answer

High pitched noise from inside the TV when picture comes on

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,


Apr 07, 2009 | Televison & Video

1 Answer

I have a 53 in. sony projection tv,. bowed picture tubes?!?

Replace Both STK convergence ICs will have part number on them STK392-560 use same part number on your STKs. Also around ICs ck pico fuses 5/6amps they are green or yellow.

Jan 07, 2009 | RCA P56930BL 56" Rear Projection...

1 Answer

High pitched noise

I am about to post a in depth guide about how to fix this problem. It's because a capacitor inside the TV has blown which causes the buzzing high pitched noise. It's really easy to fix however and only costs about £1 / $2 to sort out.

You can read a similar guide here but I will shortly be uploading a guide on the buzzing problem!

Dec 22, 2008 | Polaroid FLM-3732 Television

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...

1 Answer

Zenith IQ6097DT 60 inch big screen

Convergence circuit repair plus fuse in the power supply,
usually 300.-400.00.....................if you are mechanically
able and can solder well,it is possible to DIY...................T.

Mar 31, 2008 | Zenith IQB50M90W 50" Rear Projection...

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

89 people viewed this question

Ask a Question

Usually answered in minutes!

Top RCA Televison & Video Experts

The Knight
The Knight

Level 3 Expert

74990 Answers


Level 3 Expert

905 Answers

matt martin
matt martin

Level 3 Expert

1213 Answers

Are you a RCA Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides