Question about Philips Magnavox 27MS343S 27" TV

2 Answers

White Screen w/ White Lines, Sound On, Turns off after 2 or 3 secs.

I have a 9 year-old Phillips Magnavox 27". I just bragged on it earlier in the week. When turned on this morning, the screen was white but the sound (from Satellite) was fine. After 2 or 3 seconds, it turned itself off (screen shows a prim of sort in the middle as it shuts off). I let it sit until tonight and got the same thing. I unplugged the power supply and cable input and re-plugged them. No dice. As you can tell, I'm not that technical. Any ideas? Unless it is something really easy, I'll have to get a repair man. If you do have any ideas, how much could it set me back? I need to squeeze another year or so out of this tv. Thanks for your help. I do appreciate it.

Posted by on

  • Seven Plan Apr 12, 2007

    That should be a "prism" in the middle of the screen, not a prim.



2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 398 Answers

Replace the 10 ohm resistor on the CRT board feeding the boost voltage to the video output IC.

Posted on Jun 26, 2007

  • Level 1:

    An expert who has achieved level 1.


    An expert that has over 10 points.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 14 Answers

Hi If you mean thin white lines, this is is an indication of a problem in the Horizontal Drive ckt. most likely the Damper Diode has opened or shorted, this would cause the visual symptom and then the set would shut down, unfortunately this is a problem best left to a qualified technician to repair, hope this helps.

Posted on Apr 23, 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

Have a magnavox phillips 3mf337b/27 turns on and off with obnoxious noises and colored lines on screen

You might consider posting a new question---this site now has a way to post a video which would show what it looks like and in your case sounds like.

Dec 20, 2012 | Televison & Video

1 Answer

Our lcd phillips tv screen turns completely white after about an hour of use

The TV, most probably, the display circuit or the display itself has developed dry solder/components leaking and the TV needs attention by a qualified service technician.

Jul 14, 2012 | Philips Televison & Video

1 Answer

Phillips magnavox 27 inch tube tv had white lines going through it can hear sound then turns off

Chroma IC should be suspected. Visit this site for more details. Type in the site name "Electro-help" either to Google or Yahoo search box [not in the address bar of your browser], and click search. It is an electronic equipments service help site. All details you want are there. Note the position of hyphen in between words in site name, when you type it in. The site will appear as it is in web; subtitled as electronics equipments' repair help

May 17, 2012 | Philips Magnavox 27MS343S 27" TV

1 Answer

Universal code for 27" phillips TV for large remote control

called my daughter and she was able,to find code out for 27" Magnavox/Phillips...its 0054....worked the first time on the large I think "living Solutions" remote for the elderly....

Jan 26, 2009 | Directed 434MHZ Remote Control

1 Answer

White horizontal lines in my 27 in Phillips Magnnavox tv

I have seen this on mine. Check the cable going into your TV and make sure it is good. The ground portion of the cable could not be making a good connection.

Jan 17, 2009 | Philips Magnavox 27MS343S 27" TV

1 Answer

Magnavox with a white screen, sound, volume and channels working

dont put in back the vertical prossesor ic get a new one and solder it in see what it does.good luck.

Aug 19, 2008 | Philips Magnavox 27MS343S 27" TV

1 Answer

Philips magnavox 32" TS3260C1

Sounds like retrace lines. Leaky caps or worse can cause this.. Are you getting any vertical foldover at the top of the screen?

Jan 18, 2008 | Philips Magnavox 27MS343S 27" TV

1 Answer

Phillips/Magnavox 9P5544C102 white raster and shuts down

This denotes a problem called blooming the horizontal lines you see are called retrace lines this is caused by the increase in anode voltage which could be caused by an increase in HV section current which trips the overcurrent protection dircuit and turns the TV off.If you do not have electronics experience I would suggest taking the set to a TV repair shop.

May 29, 2007 | Philips 9P5544C 55" Rear Projection...

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

115 people viewed this question

Ask a Question

Usually answered in minutes!

Top Philips Televison & Video Experts

The Knight
The Knight

Level 3 Expert

74999 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