Question about Philips Magnavox 27MS343S 27" TV

1 Answer

27 inch tube tv won't stay on

Hi i have a 27 inch maganavox tube tv and it keeps shutting off and sometimes very hard to come on. Sometimes when it comes on it makes a whinning high pitched noise and stays on for about and hour or so. It has nothing to do with the timer, it just cuts off. It starts off by the picture on the tv starts to pull and stretch away from the corners of the tv and then i hear this click noise and it shuts off. what is the problem?

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert who has answered 1,000 questions.

  • Master
  • 1,139 Answers

You have a problem is in your horizontal section which also is part of your power supply. The high pitched whine is from the Intergrated High voltage transformer (also called the flyback transformer). This sound occurs when the freuency of the transformer changes and or the voltage gets too high. The click occurs as a result of the drawing of excessive current by the HOT Horizontal output transistor. This is repairable, but requires the correct equipment and a schematic.

Posted on Sep 20, 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

Ok my 2001 Grand Cherokee Laredo wont stay in park

Transmission sticks in reverse- won't go into park. - JeepsUnlimited
Jun 14, 2013 - 12 posts - ‎5 authors 2003 6 cyl 4x4 Grand Cherokee Laredo automatic- Occaionally, when shifting from REVERSE TO PARK, my Jeep will stay in reverse. Typically its ... '2001 WJ'4,0L'42RE'NV 242'380000 km'ECE Compliant' ??????????? ??? ...

2001 jeep grand Cherokee laredo - CarGurus > Questions > Jeep > Grand Cherokee
CarGurusJan 27, 2014 - 2001 jeep grand Cherokee laredo - Just purchased a 2001 Jeep GrandCherokee Laredo and ... It starts in PARK sometimes and sometimes it won't and I have to start it in Neutral. ... Hatch shuts flush, but won't stay shut. help!

Oct 22, 2015 | Cars & Trucks

1 Answer

Water won't shut off on my Estate washer

check clear tube that is inside machine.1st take off shell of machine look for clear tube about 1/4 inch sometimes comes off,it pushes over nipple to load size water fill knob.if it came off the water will keep on flowing and over flow.if that's the problem just put a dab of silicon on nipple and push tube back on.

Feb 20, 2012 | Estate TAWS800JQ Top Load Washer

1 Answer

TV keeps shutting off.... won't stay on, any ideas?????

Check for bad capacitors in the power supply. Check for voltages. You can get a board at Encompas Parts.,

Nov 19, 2011 | RCA TruFlat 27F520T 27" TV

1 Answer

Maganavox turns on and then off

did you solve this problem? i have the same thing, what did u do?

Jun 26, 2009 | Philips 27MT3305 27" TV

1 Answer

RCA TV, model number 32V550T. No picture but sound is fine.


this sometimes is quite simple to fix as it cud be a dry joint on the circuit board where the tube motor sits.

or it cud be the tube is on its way out, which wud be cheaper to buy a new tv rather than have it fixed


Feb 24, 2009 | RCA 32V550T 32" TV

1 Answer

Flickering image

I have a vcr and dvr combination emerson tv a 27 inch and sometimes while playing it will flicker and these horzion lines come in while a program is runing, and then the sound goes way down then comes back up to normal.

can you give me a answer?

Is it my picture tube it is about to go out?

It is close to five years old

Feb 23, 2008 | Emerson EWF2703 27" TV

1 Answer

27" GE TV with loud Popping sound

Could be a possible flyback. yes.. for a 27inch i would not think it would be worth it... 27 inch tvs are realativly cheap.. the lowest price to repair would be about 200 if you got lucky.

Dec 18, 2007 | GE 27GT271 TV

2 Answers

My TV keeps shutting off

Tvtek is on the right track. The remote will not solve the problem. Sounds like a voltage regulator in HV circuit if it only lasts a few seconds. If it stays on for a couple of minutes, beam limiter cicuit is pushing to overload and shutting unit down. Magnavox set not hard to repair, but a 27" set is not cost effective to repair either.

Jun 06, 2007 | Philips Magnavox 27MS343S 27" TV

1 Answer

Sony 27"TV will not turn on

The picture tube on your tv is dead, you need to replace it. It probably will be worthing just purchasing a new set, because the cost of repairing it will be close to the purchase of a new one.

Apr 07, 2007 | Sony KV-27FV16 TV

Not finding what you are looking for?
Philips Magnavox 27MS343S 27" TV Logo

180 people viewed this question

Ask a Question

Usually answered in minutes!

Top Philips Televison & Video Experts

The Knight
The Knight

Level 3 Expert

74990 Answers

matt martin
matt martin

Level 3 Expert

1213 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

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

Answer questions

Manuals & User Guides