Broken LED TV? Vizio M50-C1

[viziotv]

I have a Vizio M50-C1 and initially, saw the back lights turn on but saw nothing on the screen. I went through the process of replacing
-Power Supply Board
-T-Con Board
-Main Board

Nothing changed. Lastly, I replaced the LED Driver board and I at least now have some type of picture but it still doesn't show picture properly. What am I over looking?

[Andrew F. Ali]

Re: Broken LED TV? Vizio M50-C1

Put back in your original Main and T-CON Bds. Looks like mis-match in softwares, to me.

[viziotv]

Re: Broken LED TV? Vizio M50-C1

Put back in your original Main and T-CON Bds. Looks like mis-match in softwares, to me.

I feel like an idiot but when you had me look at the t-con board I noticed the 2 t-con ribbon cables weren't secured in to the board. I latched them in and turned back on the TV. I actually saw a fairly OK image but it still was not 100% clear.

I then matched up the old t-con board and main and received the attached image. I then put in both the new t-con and main, same thing. I then tried to do old main and new t-con, same. I was so close but now can't seem to get back to where I was earlier with seeing any image.

Attached is what I see now when I turn the TV on. Any ideas?

[dskall]

Re: Broken LED TV? Vizio M50-C1

Did you put ribbon cables in there original positions.

[viziotv]

Re: Broken LED TV? Vizio M50-C1

Did you put ribbon cables in there original positions.

Yes this is how the ribbons look now on the t-con

[viziotv]

Re: Broken LED TV? Vizio M50-C1

Also, I tested the 14 VGA test pins above the left ribbon cable with a DC meter and they all came back as:

New board - 3.3
Old board - 2.5

[dick_barton]

Re: Broken LED TV? Vizio M50-C1

Those ribbon cables do not look as though they are fully inserted.
You lift the black plastic tab up carefully with your finger nail and then fully insert the ribbon before closing the black plastic tab back down.
Do with care and don't use force or the black plastic securing tab could break off.

[dskall]

Re: Broken LED TV? Vizio M50-C1

Don't understand your vga readings. Each one should read different.

[budwich]

Re: Broken LED TV? Vizio M50-C1

I agree with Dick.... those cables don't look seated properly. They look like someone tried to force them in without "delatching" the clamp down. The corner side "guides" should be further in when properly seated.

[Andrew F. Ali]

Re: Broken LED TV? Vizio M50-C1

I agree with Dick.... those cables don't look seated properly. They look like someone tried to force them in without "delatching" the clamp down. The corner side "guides" should be further in when properly seated.

+100 Hope you didn't damage the cables' fingertips that make the connection.