Magnavox 19mf337b/27 will turn off and back on with loud noise through the speakers until it warms up. approx 30 to 40 min. What is the part causing this common problem?

Question 1

0helpful

1answer

I have a Magnavox 19MF337B/27 LCD TV blank screen

Main board fault. Contact any service technician. Gopakumar Gopalan Google

Feb 16, 2014 • Televison & Video

0helpful

1answer

Tv picturd distorts and makes loud buzzing noise turns off and back on by itself and does it again. Not even a year old

Chinese piece of ****.

Jul 14, 2010 • SNK Magnavox 19MF338B/27 19 in. LCD TV

0helpful

1answer

After tv is on for approx 20-30 mins it starts to make a loud high pitched squeal or whine. once turned off for approx 10-15 mins can turn it back on for another 20-30 mins before squeal will return....

Sounds like a problem I had with a Polaroid t.v. Take the cover off the back and look for capactors that are buldging on the top. The top should be slightly concave. If they are convex at all, you can buy new one at Radio Shack and replace them for under $5.00

Apr 10, 2010 • Emerson EWF2004 20" TV

3helpful

1answer

Problem with Magnavox 19mf337b/27b flat panel tv. During startup, the picture gets static and the audio screaches. The tv restarts. This happens repeatedly until the tv warms up and becomes stable.

you have a firware related problem on your main board, consider get a new main board, or replace the tv.
if you want to sell for parts let me know cuz i need the LCD panel
write : fosg2000 (at) gmail (dot) com

Apr 02, 2010 • Philips Televison & Video

0helpful

1answer

The tv picture is going out. It turns off and on

Chinese piece of ****. It is what the USA deserves.

Mar 29, 2010 • SNK Magnavox 19MF338B/27 19 in. LCD TV

1helpful

2answers

Magnavox 19mf337b/27b flat panel tv doesn't boot up

I had the same problem but was too cheap to replace the scaler board on a television which was not worth the cost. That board has 3 1000uf 10V aluminum electrolytic capacitors which had swelled tops and indications that they may have vented. Since they were installed using through-hole technology, they were easy to change with 1000uf 16V capacitors. (caps can not be more than 16mm tall). The set has worked fine for months. Cost of repair was 72 cents

Nov 13, 2009 • Televison & Video

2helpful

1answer

Magnavox 19" TV shuts itself off.....won't stay on

I had a similar problem with my Phillips 42 in. LCD HD TV.

Here's the problem. The Power Supply Board. I opened my TV up(warranty was up of course) and found several bad capacitors. Phillips and several other companies were sold capacitors that although were highly rated failed within 5 years because of a lack of preservatives. All sorts of electronic equipment is now being effected due to these defective capacitors.
Solutions?
1. Take it in and have it fixed
2. Open it up, check the board for faulty capacitors(bulged or leaking) Buy a new Power supply board and install it.
3. Remove PSB, remove faulty capacitors and replace with compatible new ones.

Hope this helps

Jun 04, 2009 • Philips Magnavox 27MS343S 27" TV

0helpful

1answer

Pioneer stereo receiver has sound and power problems.

i would suggest checking the wires on the speaker switch board, thats usually the main cause of this problem..but i dont recommend buying pioneers newer stuff

May 04, 2009 • Pioneer Audio Players & Recorders

12helpful

1answer

Magnavox 19mf337b 5 months various problems power off, ghosting, alarm noise

I am currently working on this model set and have discovered the same type of problems. Fix: 4 capacitors in the power supply section on the main board were defective (bulging out). Common problem with counterfeit parts that originate in China. See http://www.badcaps.net for details.

Oct 28, 2008 • Televison & Video

0helpful

2answers

Vertical height adjustment on Magnavox 19 inch LCD HDTV

try to adjust at the vertical section.hope this will help

Feb 01, 2008 • Philips 19MF337B/27 19 in. LCD Television

Question 2

Lake Dude

Contributor 4 Answers
Posted on Feb 02, 2012

Lake Dude

Contributor

Joined: Nov 04, 2007

Answers

4

Questions

5

Helped

1624

Points

7

Check the 2200uF capacitors for bulging. You can get the schematic here to really toybleshoot: http://www.electronica-pt.com/index.php/component/option,com_remository/Itemid,34/func,download/id,15048/chk,6022df47696641c1c064cb27f2bd7d11/no_html,1/

Anonymous Jun 17, 2012

Thank you Lake Dude - followed your instructions and problem solved. Yeah !! I know or had a feeling it was capacitor related. Appreciate your detail. Thanks again.
Lake Dude Nov 22, 2013

You're welcome. By the way, those that are having trouble with screeching or won't turn on, there is a 330uF CapXion capacitor next to the RF cage on the main circuit board you will notice that one is bulging and leaking. Replace it.

×

Answer 2

Anonymous

Contributor 6 Answers
Posted on Jul 22, 2010

Anonymous

Contributor

Joined: Jul 22, 2010

Answers

6

Questions

0

Helped

3229

Points

8

Chinese piece of ****

Related Topics:

Magnavox 19mf337b/27 will turn off and back on with loud noise through the speakers until it warms up. approx 30 to 40 min. What is the part causing this common problem?

2 Answers

Lake Dude

Anonymous

Add Your Answer

Attachments: Added items

Related Questions:

I have a Magnavox 19MF337B/27 LCD TV blank screen

Tv picturd distorts and makes loud buzzing noise turns off and back on by itself and does it again. Not even a year old

After tv is on for approx 20-30 mins it starts to make a loud high pitched squeal or whine. once turned off for approx 10-15 mins can turn it back on for another 20-30 mins before squeal will return....

Problem with Magnavox 19mf337b/27b flat panel tv. During startup, the picture gets static and the audio screaches. The tv restarts. This happens repeatedly until the tv warms up and becomes stable.

The tv picture is going out. It turns off and on

Magnavox 19mf337b/27b flat panel tv doesn't boot up

Magnavox 19" TV shuts itself off.....won't stay on

Pioneer stereo receiver has sound and power problems.

Magnavox 19mf337b 5 months various problems power off, ghosting, alarm noise

Vertical height adjustment on Magnavox 19 inch LCD HDTV

Not finding what you are looking for?

Magnavox 19MF338B/27 19 in. LCD TV

I have a Magnavox 19MF337B/27 LCD TV blank screen

Ask a Question

Check Out the Latest HD Televisions Report

Top SNK Televison & Video Experts

matt martin

Cindy Wells

Brad Brown

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

Manuals & User Guides

Related Topics:

Magnavox 19mf337b/27 will turn off and back on with loud noise through the speakers until it warms up. approx 30 to 40 min. What is the part causing this common problem?

2 Answers

Lake Dude

Anonymous

Add Your Answer

Attachments: Added items

Related Questions:

I have a Magnavox 19MF337B/27 LCD TV blank screen

Tv picturd distorts and makes loud buzzing noise turns off and back on by itself and does it again. Not even a year old

After tv is on for approx 20-30 mins it starts to make a loud high pitched squeal or whine. once turned off for approx 10-15 mins can turn it back on for another 20-30 mins before squeal will return....

Problem with Magnavox 19mf337b/27b flat panel tv. During startup, the picture gets static and the audio screaches. The tv restarts. This happens repeatedly until the tv warms up and becomes stable.

The tv picture is going out. It turns off and on

Magnavox 19mf337b/27b flat panel tv doesn't boot up

Magnavox 19" TV shuts itself off.....won't stay on

Pioneer stereo receiver has sound and power problems.

Magnavox 19mf337b 5 months various problems power off, ghosting, alarm noise

Vertical height adjustment on Magnavox 19 inch LCD HDTV

Not finding what you are looking for?

Magnavox 19MF338B/27 19 in. LCD TV

I have a Magnavox 19MF337B/27 LCD TV blank screen

Related Topics

Ask a Question

Popular Questions

My skyworth tv has sound but no picture

Magnavox 42MF231D/17, screen just turned black,

Magnavox 42 LCD 42mf438b/f7 turns on/off by itself

Codigo dvd ekt control remoto steren

37 INCH LCD HD NO PICTURE GREEN LIGHT ON, BUT NO SOUND

Check Out the Latest HD Televisions Report

Top SNK Televison & Video Experts

matt martin

Cindy Wells

Brad Brown

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

Manuals & User Guides