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Posted on Jan 02, 2017
Is the fuse in the plug okay?
If the fuses are not blowing when you are turning the tv on, this suggests that the PSU primary side is okay.
Since you have opened the TV up, I would suggest probing around with a multimeter however I do not want to let you harm yourself or the TV.
Look for any:
on the power supply
Posted on Aug 13, 2008
SOURCE: My magnavox 37mf321d 37 LCD tv
This is a bad power supply and an easy fix. Their are several electrolytic capacitors on the power supply. If one is bad it will have a bulge on the top. Mine had a bad 2200uF and a bad 1200uF capacitor. About $7 worth of parts at Radio Shack. Radio Shack had the 2200uF but it was axial leads instead of radial. (leads come out of each end instead of one end) but It will still fit. They only had a 1000uf capacitor so I combined that with a 220uF capacitor and wired them in parallel. Make sure you put them in with the correct polarity.
Posted on Dec 06, 2008
An earlier post of the smaller model of this with the same problem said to remove the metal cover over the power supply.
I have the 26MF231D and it worked great afterward (even though you can't mount it)
Here is how you remove the cover.
Posted on Dec 26, 2008
A ceramic fuse stands up to heat better than a non-ceramic fuse. I'm no pro, but it sounds like your power inverter board maybe bad. There are replacements out there. Good luck
Posted on Jan 19, 2009
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