Question about Zenith C27A24T 27" TV

1 Answer

Tv wont turn on

Wont turn on and when plugged in it makes a high pitch noise and wont stop untill after i unplugg it and it happened while i was sleeping

Posted by on

  • 2 more comments 
  • tmims22 Nov 17, 2008

    is it shot or can it be fixed

  • Anonymous Nov 29, 2008

    Same problem- tried to hook up the converter box- just got snow and no channels, set up screen etc, Then, the tv just would not turn on any more- hitting the power button does nothing. But there is a high pitch sound from the tv unless I unplug it. Help!

  • Anonymous Dec 02, 2008

    same exact problem, its been sitting there almost a year.

  • cncrtdon Mar 09, 2009

    I have the same problem, but does not make any noise when i leave it plugged-in

×

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Zenith Master
  • 5,568 Answers

All later TVs are really not 'off' when you turn them off. They have power to some circuits all the time if plugged in, otherwise they could not even respond to an 'on' signal from your remote.
The squealing you are all hearing is from a dying 'switched mode' power supply and is normally caused by a ferrite-core transformer running at the wrong frequency and complaining about it. The problem with them is almost certain to be caused by failed or failing electrolytic capacitors (cheap to replace) but continued  attempted operation could cause further damage.
This problem is common enough that any half-way competent tech with a capacitance meter could weed out the culprits pretty quick.
I'm tempted to suggest you get these repaired if they were otherwise satisfactory since the flat panels too often seem to only survive the warranty.
If I was doing the repair, I would give you an estimate of under $75. US 
  

Posted on Dec 09, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi,
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.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

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 ...

www.tomshardware.com > 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

www.consumeraffairs.com > 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 ...

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

Jan 21, 2016 | Funai Televison & Video

1 Answer

When turned on the screen is blank and makes a high pitch buzz


Samsung LCD TV with no video and high pitched sound - Digital TV ...

www.tomsguide.com/forum/54120-4-samsung-video-high-pitched-sound

Nov 8, 2015 - 25 posts - ‎12 authors
Our is the same model and has started making a very high pitched ... to acutally turn on and then when it does, the screen is still black and we ...

Is your LCD making a buzzing or high pitch noise ...

https://www.devside.net/blog/lcd-making-a-buzzing-noise
Dec 30, 2008 - In my case, the monitor was fine for the first two months. But then started making a buzzing noise... 1) when on, 2) worse when .... my Samsung TV ismaking high pitched noises even if its turned off. I will NEVER EVER EVER ...

TV not turning on; making high-pitched sounds - Tom's ...


Dec 13, 2015 | Televison & Video

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

Durabrand tv wont turn on!


My Daughter has the same problem with hers. That high pitch noise your hearing is coming from
a transformer on the inside it means the transformer went bad and has to be replaced.I hope this helps a little.

Jan 02, 2009 | Durabrand DU1901 TV

1 Answer

Trouble turning on tv. High pitched noise/click.


The mainboard might have some loose components, or cold solder , or may be the filter capacitors are becoming faulty. Yes it is worth repairing, bring it to the repair shop. Cheers.

Nov 25, 2008 | RCA Televison & Video

1 Answer

High pitched whine


Ok maybe this may help .... there is a coil LL08 I believe... somtimes it creates a high pitch whine like you describe.. its stands up on the deflection board..it basicaly a large coil of copper wire....you can take silcon and put on the coil...in effect damping the ocillations...hope that might help

Mar 27, 2008 | RCA D52W20 52" Rear Projection HDTV-Ready...

4 Answers

Loud humming or high pitch buzzing noise coming from my rca dlp tv 50 inch


I have a very high pitched sound and when I move the tv it will stop for a second or two and then start again. The sound sometimes stops all together. But very high pitch sound.

Aug 08, 2007 | RCA HDLP50W151 50" Rear Projection HDTV

1 Answer

TV won't stay turned on, no picture, started making high pitched noise


That high pitched noise you're hearing is the power supply telling you that it has too much of a load on it and lowered its operating frequency which in effect cuts its output way down! Normally you don't hear any thing since the power supply operates at a frequency that's beyond human hearing. In an RCA this indicates more than likely that your horizontal output transistor is shorted and this short was caused by the flyback transformer shorting. This is a common happening with RCA's You'd need to take to a tv shop and have it checked out. Stargazer

Jan 28, 2007 | RCA F27650 27" TV

1 Answer

High Pitch buzz noise when plugged in and it doesn't turn on


The tv has a shorted component and that is why is making the noise,call a qualified technician to find it and dont try to use it anymore.Is not a fuse.

Sep 12, 2006 | RCA F25649 25" TV

Not finding what you are looking for?
Zenith C27A24T 27" TV Logo

Related Topics:

73 people viewed this question

Ask a Question

Usually answered in minutes!

Top Zenith Televison & Video Experts

The Knight
The Knight

Level 3 Expert

72196 Answers

matt martin
matt martin

Level 3 Expert

1207 Answers

Jaime Hernandez

Level 3 Expert

2296 Answers

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

Answer questions

Manuals & User Guides

Loading...