Question about Toymax Magnavox 37MF331D 37 in. LCD TV

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Philips Magnavox 37" LCD Flat Screen 37MF331D Have replaced power board,main board,hit power a faint light on whole screen for about 2 seconds the nothing.

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Disconnect the LVDS Cable that runs from the small signal board to the display panel and apply power,if the screen comes on,the Small signal board (aka Scaler Bd ) is the faulty board. other than that,all that's really left that has gone bad for me is the logic board.

Posted on Jul 07, 2009

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LVDS Cable tv lcd 37mf231d/37

Posted on Sep 12, 2010

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Why toymax magnavox 37mf331d 37 in tv worked good i turned it off came back to turn it on and it wont come on the green light that is usually there its not on ?


Fault with the main power supply regulator section. Either it will be on a separate board, or on the part of its main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/

Nov 27, 2014 | Toymax Magnavox 37MF331D 37 in. LCD TV

1 Answer

Magnavox 37MF331D 37 inch won't power on with no led light


check the power supply board for swollen filter capacitors

Oct 15, 2012 | Televison & Video

2 Answers

I lost the picture on my 37" LCD model 37MF331D/3. The audio is fine.


There are two places to look for the problems, the backlight inverter board and the power supply. Look at the power supply first since it is easier to get to, look for burnt parts, bad capacitors, etc.
http://en.wikipedia.org/wiki/Capacitor_plague
Please post back what you find.

Dec 03, 2009 | Toymax Magnavox 37MF331D 37 in. LCD TV

2 Answers

Need to get a schematic of the power board in a MAG 37MF231D part# 31381036294.3 for T/S purposes. New board just to expensive.


Replace cap location 2074 which is 25 volt 2200Mf and cap location 2081 which is 35 volt 1200Mf. You can visually see these when you remove the back...Good Luck! PS...be sure they are rated at 105 degrees!!!!

Nov 17, 2009 | Toymax Magnavox 37MF331D 37 in. LCD TV

1 Answer

My 2 year old Magnavox 37MF231D/37 LCD TV just blew the picture screen. The audio comes through fine, but the screen is dead black with no menus, info, nothing. I tried various inputs, same result. I...


The problem can be in the backlight inverter board (hard to get to), or the main power supply module may not be working. Look at the power supply first since it is easy to get to, look for burnt parts, bad capacitors.
http://en.wikipedia.org/wiki/Capacitor_plague
Please

Nov 11, 2009 | Toymax Magnavox 37MF331D 37 in. LCD TV

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

Magnavox 37MF331D/37 keep asking for software upgrade


Your set either has a bad SSB (small signal board) or needs a software upgrade. Try the upgrade first by going to http://www.m4c.magnavox.com/cgi-bin/dcbint/cpindex.pl?scy=US&slg=AEN&cat=FLAT_TV_CA&sct=LCD_LARGE_30_40_SU&grp=TV_GR&session=20090830171041_4.131.87.247&ctn=37MF331D/37&mid=Link_Software&hlt=Link_Software
Download the latest software release for your set then follow install instructions that are contained in the user manual for your set.

Jul 22, 2009 | Philips Magnavox 15MF400T 15 in. LCD...

4 Answers

Philips Magnavox 37" LCD Flat Screen 37MF331D \37


There are two capacitors in the internal power supply regulator board that have been the main culprit of this particular issue. You can identify the bads ones by the slight buldge at the top of the capacitors.

Feb 07, 2009 | Toymax Magnavox 37MF331D 37 in. LCD TV

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