Sony FD Trinitron WEGA KV-27HS420 27" TV Logo
Jim Gainey Posted on Mar 04, 2007
Answered by a Fixya Expert

Trustworthy Expert Solutions

At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.

View Our Top Experts

High pitch sound for Sony FD Trinitron WEGA KV-27HS420 27" TV

When the TV is on I get a high pitch sound. I turn on the volume mute and the sound is still on. I turn off the satillite and still have the pitch sound . The sound is very, very annoying and sometimes hurts my ears. Any ideas or is it time for a new TV. Picture is still great!!!! Thanks Dunovan

  • bwhetstone Feb 28, 2009

    i have a high pitch squeel but usally starts about 10 minutes after turning on tv. Stops when I mute. I have my stereo, cd player, bose surround sound speeakers, turn table,vcr-everything goes thru my jvc receiver. Don't know what this squeeling is?

×

1 Answer

Anonymous

Level 2:

An expert who has achieved level 2 by getting 100 points

MVP:

An expert that got 5 achievements.

Novelist:

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

Governor:

An expert whose answer got voted for 20 times.

  • Expert 192 Answers
  • Posted on Mar 04, 2007
Anonymous
Expert
Level 2:

An expert who has achieved level 2 by getting 100 points

MVP:

An expert that got 5 achievements.

Novelist:

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

Governor:

An expert whose answer got voted for 20 times.

Joined: Nov 25, 2006
Answers
192
Questions
0
Helped
109480
Points
379

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.

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

2helpful
1answer

Sony FD Trinitron WEGA KV-34HS420 34" TV Stand by

I have the indentical tv and problem. Cost to repair was about 250.
0helpful
1answer

Sony FD Trinitron WEGA KV-32HS420 32" TV.....Turns

Sounds like a diode may have burnt up or if your really lucky it might just be the fuse.!!! You might want to get a secound opinion .But if you know what to look for , which is any component on the motherboard that appears as if had caught fire sader it out amd replace with exact same component which can be ubtained at radio shack.GOOD LUCK TOO YOU!!!!!!!!!
0helpful
1answer

I see pictures ,but no sound from my TV

Check speaker line. Check audi IC dc voltages.Check the volume mute signal. Refer diagram for this.
1helpful
1answer
0helpful
1answer

Super high pitch whistle from tv, only powering it off helps.

Shut it off and unplug. You have a serious HIGH VOLTAGE problem that could cause a fire. Professional repair needed.
0helpful
1answer

"High Pitch Squealing" from my tv.

this most likely a coil or transformer that is doing this
And yes this is worth fixing , shouldn't be to bad on the cost of the repair
1helpful
1answer

KV-36XBR450, FD Trinitron WEGA

Hello maymet,

This sounds like the HV protection circuit is cutting off the TV due to a high current event in the set. This could be a problem in the High Voltage section of your TV (Horizontal output transistor, Integrated High Voltage Transformer, and y of the deflection components, and or the CRT in cases of shorts).

I would suggest that if you do not have a background in electronics, you should have an experienced TV technician troubleshoot and repair this problem.
This is due to the nature of the dangerous voltages that are present in the television.

I hope this helps,

Thank you,

Shuttle83
0helpful
1answer

No sound (sony trinitron kv-2197pf 21" tv)

try to short the spider transistor along ic amplifier. it is in a mute
0helpful
1answer

Turn on problem

Hiii...
I hope you have experience with repir TV because you have common problem whit high voltage on tv board.....
What chassis of you TV set have ?
I hope hear from you soon....

[Vrya]
0helpful
1answer

Sound Problem

There's a possibility that you may be experiencing problems with the audio output IC -IC404 - All serial numbers produced until July 2003 might use one of these defective IC's. So if your set was manufactured before this date, that is probably the culprit. If not, and you have it connected to a cable box that has its own volume control, it could be that its volume is turned down and by turning up the TV's volume too high that you are getting this distortion. Hope that helps.
Not finding what you are looking for?

1,591 views

Ask a Question

Usually answered in minutes!

Top Sony Televison & Video Experts

Grand Canyon Tech
Grand Canyon Tech

Level 3 Expert

3867 Answers

ZJ Limited
ZJ Limited

Level 3 Expert

17989 Answers

matt martin
matt martin

Level 3 Expert

1259 Answers

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

Answer questions

Manuals & User Guides

Loading...