Question about Philips Magnavox 52MF437S/37 52 in. LCD TV

1 Answer

TV will not Power Up / Blinking Green Light on Power Button

This phillips Magnavox 26D/32MD251id LCD TX with DVD player is one year old. It will not power up. I tried the manuals suggestion of unplugging it for sixty seconds, same problem.

No, Sound, No Picture, just black screen.

Please help me.

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 4 Answers
Re: TV will not Power Up / Blinking Green Light on Power...

May be the same problem Magnavox is having with their 27MF231d. I found the fix on this site and it took care of the same problem with my set. Not the easiest thing to do, but it worked. If you do not know how to solder, get some help with this one. If you take it to a Magnavox Authorized repair location, they will just replace the bad capacitor with another bad capacitor of the same type and voltage. The problem is they have a 25w capacitor where a 35w capacitor should be. Mine was bulging, with black tar looking stuff coming out of it. It was obviously bad. Follw the instructions below.

1. Remove all screws around perimeter, one screw at the lower right at (Side A/V), and 2 1”round plastic knob s.
2. Remove back cover
3. At lower left side remove 2 screws for On/Off switch cut tie wrap that holds wire down for free movement.
4. Disconnect wire connector to side A/V at lower right side
5. Disconnect wire connector to right side circuit Board
6. Disconnect wire connector to left side circuit board
7. Remove the 2 mounting brackets upper left and upper right 2 screws each.
8. Remove 3 screws each side of the metal box in the middle
9. Fold back metal tape off bottom and top of metal box
10. 1 wire connector at top of box I left connected
11. Flip metal box over towards top of Tv. Be careful of wire at top thats still connected.
12. On left side in box is power supply board
13. Towards bottom of board you should see the numbers C2081 and C2074
14. Remove the six screws holding down power supply board
15. Flip board down towards bottom of Tv.
16. Unsolder capacitors replace with new 1200uf 35v and 2200uf 35v 105°C radial capacitors
17. Capacitors should be around 1/2” to 5/8” dia. X 1.25 long appox. 2 Wires come out of one end should be .030 dia.
18. Reassemble in reverse order and enjoy

Posted on Feb 28, 2009

Add Your Answer

0 characters

Uploading: 0%


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


3 Points

Related Questions:

3 Answers

Power green light Blinking, Will not power up.

Got this from Phillips:

Question My TV has no picture.
Answer Press the menu button on the remote. If the menu appears you are probably experiencing a signal or connection problem.

If you have a menu check the following:
  • Video inputs may be shared. If you have sound but no picture, check that audio and video inputs are going to same.
  • Check antenna connections at the bottom of the TV to see if they are properly connected to the TV.
  • Possible broadcast station trouble. Try another channel.
  • Adjust the contrast and brightness settings. Try another auto picture setting.
  • Check the Closed Captions control. Some TEXT modes could block the screen.
  • Check if you selected the correct AV source. (For LCD TV with built-in DVD player, the correct DVD source is AV1.)
If you have been watching the set and you loose picture:
Your TV has a protective mode in case there is too much heat build-up. Check the clearance around the vents of the device to be certain there are no blocking walls or cabinets which would limit the air flow.

Is it installed in a TV cabinet? These models produce a lot more heat than you think. So the last suggestion is a likely culprit.

One other possibility. Some models have these, some don't but look for a small "red reset button" recessed some where in the back of the set near the power cord. It is a built in circuit breaker.

Nov 26, 2007 | Flat Panel Televisions

1 Answer

My Magnavox 52" LCD tv blinks red and will not come on (by the remote or the power button on the tv). I have to disconnect the tv from the wall plug for few seconds. It will come on green and work...

Ur power supply board have problems,just not dead yet.Tries websites like, to buy a refurbish power supply board for the replacement.

Apr 23, 2010 | Philips Magnavox 52MF437S/37 52 in. LCD TV

1 Answer

Phillips LCD TV,green power light changes to red blinking light when power button is pic and no sound.

Look at the power supply first; look for burnt parts, bad capacitors, etc. Look for 5vdc, 12vdc, and 24dvc.
Please post back what you find

Dec 18, 2009 | Flat Panel Televisions

2 Answers

Magnavox 37MF331D 37 in. LCD TV tv will not come on, power light blinks. I tried disconnecting power cord and hold power button to discharge, still will not come on and as soon as I apply power again the...

I had the same problem with a Magnavox LCD TV. It would not turn on and the light on the external PSU flashed. I found a replacement 12V 5A power supply on EBAY. It brought the set back to life.

Sep 12, 2009 | Toymax Magnavox 37MF331D 37 in. LCD TV

1 Answer

Red light power blinking

power supply problem this can be done by a professional tv repair

Sep 12, 2009 | Panasonic Viera TX-32LX70 32 in. LCD TV

8 Answers

Magnavox 32mf231d - Just a blinking green light, No Power

I had this problem, but saw other places that it was a cheesy capacitor on the power supply circuit board causing this. I opened it up and took the power supply board out and it was obvious which capacitor was was bulging and had black stuff on it. It was rated 2200 uF @ a new one @ Radio Shack that was 2200 uF @ 35v. Soldered it in (I stink @ soldering, but gave it a shot and it was EZ). Watching the first weekend of college football w/o waiting on a flashing green light for up to an hour so the TV would start! I'm going to try to find the other websites that directed me to this to say THANK YOU...BTW my brother used to have fits with several Magnovox TV's and thier power supplies back in the old tube style TV days. I thought I didn't need to worry about this with an HD flatscreen, but was wrong. I will think twice before buying a Phillips/Magnavox/Funai/whatever else they are again. They have a long list of complaints and I believe a class action lawsuit to refer to about this problem. They should have stepped up and done something!

Mar 19, 2009 | Toymax Magnavox 37MF337B 37 in. LCD TV

2 Answers

Magnavox 15mf605t/17 15'' LCD HDTV won't turn on

Have similar TV. If it is set to the PC source, it goes into standby when there is no signal, like a regular monitor. Even though the monitor is in standby, you can still press the Source button to change to, say, HD input, and will use the familiar on/off action when pressing Power on the remote.

A little weird, but I've gotten very used to it.

Mar 15, 2009 | Philips Magnavox 15MF400T 15 in. LCD...

1 Answer

Phillip tv

Probably bad inverter board. It has a short in inverter board and as soon as it powers up it detects the excessive current draw and shuts the set back off. Open it up, unplug the power supply connections to the inverter board then try to turn it on, if you get a green light then the inverter is bad. Try E-bay for replacement board.

Apr 16, 2008 | Philips 26MD255V 26 in. LCD TV/DVD Combo

1 Answer

Phillips/Magnavox 26MD255V

manual eject button is on side were you load the disc

Nov 09, 2007 | Philips 26MD255V 26 in. LCD TV/DVD Combo

Not finding what you are looking for?
Philips Magnavox 52MF437S/37 52 in. LCD TV Logo

499 people viewed this question

Ask a Question

Usually answered in minutes!

Top Philips Flat Panel Televisions Experts

The Knight
The Knight

Level 3 Expert

66456 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers


Level 3 Expert

4518 Answers

Are you a Philips Flat Panel Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides