Vizio M421VT LED faulty!

[ivtec]

Hi guys; i need your help on this Vizio M421VT LED TV, one of my last finds,and i'm trying to save it from going to landfill;
i have this screen pic attach.,
also there is no sound.

http://postimg.org/image/b1s2lk0zx/ae269042/

Also there are some pics of the boards in this bellow thread;




https://www.badcaps.net/forum/showthread.php?t=28199

[ivtec]

Re: Vizio M421VT LED faulty!

hi guys; not a single soul here has any idea as i get this fault,it's like as if the video is scrambled,checked voltages and all good.

[ivtec]

Re: Vizio M421VT LED faulty!

Please don't let me hanging here, advise.I have made a Utube video,i've got hold of a remote control and was able to set chan-3 and i get sound and the scrambled pic.
sometimes when i plug from the wall it gets the vizio logo blinking then a few pugs in and out from the outlet i can get pic scrambled and sound,
well i would be happy if it was not the screen, no money now for a main board that is being sold for 130 dollars which is out of the question for now,maybe i come across a cheaper a board in the future




. https://youtu.be/YiSs0lPw6RY

[spicedrvr]

Re: Vizio M421VT LED faulty!

It probably is the Main Board. Try calling Vizparts.com. They might have a better price.

[ivtec]

Re: Vizio M421VT LED faulty!

Thanks guys; For now i'got this Vizio Running i did the BGA chip heating, i don't know for how long,
i applied the same method as the Ps3 YLOD fix tutorial just by heating first bottom side with low heat then with high heat the heat sink , let it cool for an hour then put it together and voila it's running for now,i opened a big hole behind the Main board Heat sink and added 2 small 5 v fans connected to USB.



http://postimg.org/image/w8qemkslz/a87ababc/


http://postimg.org/image/juherh593/2a52fe32/