Question about Toymax Magnavox 37MF231D 37 in. LCD TV

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Magnavox 37MF437B/37 sound doesn't work sometimes, but comes back when we turn the unit off and then back on - is something going wrong - or are we doing something wrong? we use it a lot to stream movies with a laptop on the PC input

Posted by comsol on

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4 Related Answers

Anonymous

  • 8619 Answers

SOURCE: Magnavox 37MF437B/37. Been a great

Hi


Thanks for using FixYa. From what you have described it seems the issue is with the power board or the main board and we’ll need to check few things. When you open the unit up; take a look at the power board-the board where the power cords/plugs goes into. You might see some filter capacitors a little bulged up in the top-If this is the case-this is your defective part(you can try to replace them-but some soldering equipment is needed). If not, then probably the main board has gone bad. This is the other board-where all the inputs are going into. All this is only recommended if you have electrical expertise and know how to solder/re-solder components. Please note that the TV components consists high voltages even when in off position. Please do accept the solution if the issue is resolved or post a comment for further assistance.



Thanks
Rylee

Posted on Aug 30, 2010

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SuperTech-11

Norman Skinner

  • 1591 Answers

SOURCE: 37mf437b/37 will not power up just makes chirping

Look for more caps, and start checking transistors.
See my tip in tips and tricks for checking transistors.

Posted on Mar 06, 2011

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Anonymous

  • 1622 Answers

SOURCE: Magnavox 47MF437B/37 works fine until

Hello,

power supply board is dead, u know basic electronics' and soldering? Most of the times, the power supply board just have dead leakages gases capacitors.These capacitors always bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get your TV power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.

Hope it work with the solution

Posted on Jun 12, 2011

SD Tech

SD Tech

  • 14553 Answers

SOURCE: Magnavox 37MF321D/37. suddenly just shut off and would not turn back on, no blinking green light nothing!

Price the board first and then decide, I fix these in our shop but do not like or enjoy working on them at all.

Posted on Dec 20, 2012

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37mf437b/37

Sounds like back-light inverter board fault. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
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Hello,

power supply board is dead, u know basic electronics' and soldering? Most of the times, the power supply board just have dead leakages gases capacitors.These capacitors always bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get your TV power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.

Hope it work with the solution
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I need help in identifying whether or not my magnovox is 720p or 1020p. The ID # is 37mf437b/37 and the serial # is bz3a0722610855

Google the model number--owner's manuals are available on the internet for free.

This model (37MF437B/37) IS A 1080P SET.

If you need more information or advice let me know--I am here to help people.

If this helped you, rate this solution as I do this here for free.

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another fixit post tells you to remove the back and take off a metal part: http://www.fixya.com/support/t255942-power_cylcles_off

This is the older brother: A lot of the reviews describe your very problem.
http://shopping.yahoo.com/p:Magnavox%2037MF231D%20Television:1994315520:page=user-reviews

Magnavox should do something about this!

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My magnavox 37mf321d 37 LCD tv

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