The power light blinks and the welcome screen comes on for 20 seconds and it shuts off Model WD-73737

The green light blinking is the set trying to boot up especially if power lost---70 seconds and should stop. Here is a link to a question I answered that might be helpful:

http://www.fixya.com/support/t12296849-turns_off_shortly_after_turn?mt_f=viewFull162

Probably a blown lamp-- check your owners manual and replace the lamp

First is if you are able to get it to turn on and blue screen only appears it will shut down as no signal noted.

If you can get it on with Mitsubishi remote : Menu, 1,2,3 enter

This is the soft reset and the set also has a hard reset.

Try the soft reset first and let me know what happens.

If you are getting at turn on source and back ground is all blue the set will shut down rather quickly;

I have a suggestion, if it works fine, and if not it will not hurt anything.

with original Mitsubishi remote turn set on and then Menu, 1,2,3, enter.

This is the soft reset that most of these sets have (cannot be sure since Model number above is correct?)

The reset button on the front (if it has it) just shuts the set down and reboots the DM unit inside.

Most of these sets when it is pressed the green light will blink for about 70 seconds and go out; that is the DM unit rebooting and the soft restart is something else.

Let me know what you find before you rate this information.

SD TECH

Only get Welcome screen and green blinking lite. Then shuts off. Buttons locked out also. Need to get software update V41C-11.3 Mitsubishi-tv.com. Go to support then software update. It will ask for model, ser. First and Last name and E-mail. download. http://www.avsforum.com/avs-vb/showthread.php?p=19844230
Has a link about 1/3 way down that will go right to the download. Very helpful.

It's not the bulb. Google Mitsubishi WD-73737 blink codes. The blinking light is a self diagnostic tool and each blink code represents a certain problem.

Tv manual PCB control buttons all work?Like power on/off,volume - + and chanels + - all work than it not the manual PCB board control IR is parts of this board.Not the IR problems,when tv is finally on the remote work fully everything buttons?No,could be remote control have problems.Tv might have DM power supply board problems.

I am having this same problem and the tv is only about 1 1/2 years old. Please help!!! Thank you in advance.

my tv keeps turning off i have a mitsubishi wd-73737 what can i do to fix it?

buffer board or video pcb board