I have a 50 in plasma magnavox flat screen, and it will not turn on. the green light will come on then it turns red and blinks?????

Flashing Red Light is a sign you should contact Authorized Service or check User Manual for such reference.

BUT BE CAUTIOUS NOT TO TRY A REPAIR YOURSELF!

I had AWFUL customer service. (Sherry is DREADFUL her # is 1-877-543-8325 she is in"executive services". Ask to speak to her directly...if you would like ZERO help.)

They WILL NOT extend the warranty, even though they know there is a defect with this AND other models. Zenith name on the front...LG guts in the inside.
Ours turns on, screen black and then clicks three times and then turns back off.

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It come soon just take the plug out for about a minute put it back in and keep trying

Ur power supply board is dead.Need a new one.

Replace the Main Power Supply inside the TV.

unplug tv overnight. if that doesnt work the powersupply is probably bad.

same problem, red blinking light in series of 5 flashes

When you have the red light that blinks four times on the 50" Magnavox Plasma Model 50MF231D/37, you should look for the capacitors on the power board in the center of the of the TV. Look for two 3300uf, 10V, 105c capacitors that have a build up of pressure that has caused the top of the capacitor to look rounded instead of the flat top that will be on all of the other capacitors. Changing these two capacitors fixed the problem of the TV not coming on.
I had more trouble finding the capacitors than changing them. I could not find them locally so I went to an on-line electronics supply store where they were $1.65 each and $8.99 to ship.

We have a 50 inch magnavox plasma screen. We found and used a fix from fixya! It only costs us $34.00 campared to the $300.00+
anyone wanted to look at it. The problem was on the powerboard but was two little capacitators with the model #3300 10v. We carefully took the back off the tv and removed the power board, went to a local electric supply store and bought the 2 parts for $2 each, we then found someone (tv repair shop!) to sauter the new ones on! Got it home put it back together and it stayed on, no depressing shutdown after a few seconds! you can find a picture of a fried capacitator on yahoo images, they are supposed to be flat but if defective will be bubbled at the top or even split! I am calling Magnavox today to complain that they are not recalling this part that should have been a better quality capacitator! Hope this helps some people!!

The set needs new inverter boards.Sharp is very aware of this problem.They will fix the set if you push the issue.