Question about Toymax Magnavox 47MF437B 47 in. LCD TV
The most likely failure is the main power supply. You may be able to identify it with the following instructions:
Unplug your set overnight to allow potentially hazardous voltages to discharge, remove the back panel of the set so you can see the guts.
Look for a smaller board with larger parts on it; some cylindrical (capacitors), others block-like and relatively large (chokes and transformers).
You should also see a relationship between the board and the incoming AC.
Check the board for a label or if not present, a stamped-on number.
Call the manufacturer's service center with your TV model number and the number found on that board and inquire about repair/replacement costs; if both are offered, they won't be that much different.
If you must buy a new board, don't dispose of the failed one as there are smaller companies that can repair it for less than the mfr. and then keep it as a spare as this problem will likely arise again.
Unfortunately, the Magnavox name is owned by the Japanese Funai company which is known for poorly designed and not very reliable products.
Posted on Sep 07, 2009
The issue is the power supply, mine did the same thing. On the power supply board behind the back panel (the one the AC input goes to), look for electrolytic capacitors with puffed-out tops. Replace them. I had 4, one 1000 uF and 3 640uF, and the 640's were the hardest to find. Once all bad capacitors have been replaced, you should be back up and running again.
Posted on May 13, 2011
Did u fix ur tv? i sharred my screen on my tv?if u want to get rid of urs ill buy it for parts let me know (i need the screen)
email@example.com 47mf437b/37 47inch magnavox
Posted on Feb 07, 2010
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Posted on Jan 02, 2017
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