Question about SNK Magnavox 42MF438B/27 42 in. LCD TV

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My magnavox 42in. 42MF521D-37 shut off and will not turn on

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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.

Posted on Nov 15, 2009

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I can't operate my Philips Magnavox 42MF521D/37 Television


Philips has the FAQs and manuals for the 42MF52D/37 here: http://www.m4c.magnavox.com/cgi-bin/cpindex.pl?ctn=42MF521D/37&mid=Link_FAQs&scy=US&slg=AEN . The direct link to the User's guide is http://download.m4c.magnavox.com/files/4/42mf521d_37/42mf521d_37_dfu_aen.pdf . You will need Adobe Reader of a similar program to read the manual.

Is there a specific problem you are having with your set? (OTA or cable setup or another issue) Please add a comment if you would like additional support. Note: digital OTA signals are subject to a "cliff effect" if your tuner doesn't get enough data from the antenna. This will be determined by the tuner, the antenna location (indoor, outdoor, elevation), distance from the transmitter, and any splitters or other wiring problems. I've seen failed amplified splitters turn into filters that block the incoming signal from reaching the TV.

Cindy Wells

Dec 16, 2012 | Philips Magnavox 42MF521D/37 Television

1 Answer

My magnavox 42mf521d/37 tv stopped working.


First place to look is to follow the power cord inside the set to the main fuse---look at that first. If you are not able to do that get a shop or tech to look for you.

Dec 07, 2012 | Philips Magnavox 42MF521D/37 Television

1 Answer

I have a magnavox 42"


Problem could be in the Main unit Board, check out www shopjimmy.com

May 31, 2011 | Philips Magnavox 42MF521D/37 Television

1 Answer

My Tv model number 42mf521d/37 will not turn on and makes a high pitched alarm. What is the deal. Do I need a preist? lol


Is the TV's name Damien??
I think it's the main power supply. This happens far too often on new sets.
Find a decent TV repair place near you

Oct 11, 2010 | Philips Magnavox 42MF521D/37 Television

1 Answer

I have a 42in Magnavox flat screen. When my TV is plugged in it just clicks repeatedly with no picture ever coming on the screen. It appears we lost power while away from home and now its been doing this...


I had something similar shortly after I bought mine, my 11 year old walked over to the set and used the on-board power button, telling me everytime we lost power he has turned it on there before the remote could do it. At least it is worth a try....

Aug 10, 2010 | Philips Magnavox 42MF521D/37 Television

1 Answer

Magnavox 42mf521d/37 sound but no picture


The solution is the same I used for srjohnnichol, June 4, 2009. I promise you, this will correct your problem. Stop waiting an getter done!

Jul 27, 2009 | Philips Magnavox 42MF521D/37 Television

2 Answers

Junk from magnavox.


Trying unppluging wait one minute and plug in again.

Aug 31, 2008 | Philips Magnavox 42MF521D/37 Television

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