Vizio VW42LHDTV10A screen blue with lines

[BryB]

My TV was given to me by my brother because it went out and he didn't want to mess with it. The TV would turn on, screen was black and it would not turn off by the power button. I found the readings on U33 were off so I replaced it. Now the screen is blue with lines but I can also turn it on and off using the power button. Any suggestions on what will help with the screen now?

[Pentium4]

Re: Vizio VW42LHDTV10A screen blue with lines

I'm think that the T-con board or the panel is bad

[BryB]

Re: Vizio VW42LHDTV10A screen blue with lines

Sorry, I am somewhat a newb posting on forums, here are pictures of when the TV is first turned on and then after sitting a minute, with a black shadow like area at the lower left hand corner. Could it still be the Tcon board or the panel? Thanks for your reply Pentium4.

[tom66]

Re: Vizio VW42LHDTV10A screen blue with lines

I am betting panel.
This fault is very similar.
https://www.youtube.com/watch?v=GcBwTums_mI

[BryB]

Re: Vizio VW42LHDTV10A screen blue with lines

Panel? Ugh, I hope not! Thanks tom66

[BryB]

Re: Vizio VW42LHDTV10A screen blue with lines

I am betting panel.
This fault is very similar.
https://www.youtube.com/watch?v=GcBwTums_mI

I'm not sure it's worth changing the panel, might cost close to the same for a new TV. Is there any way that I can test the panel to be sure before spending the money?

[tom66]

Re: Vizio VW42LHDTV10A screen blue with lines

The video linked goes through that procedure, and no, changing the panel is very unlikely to be economical.

[BryB]

Re: Vizio VW42LHDTV10A screen blue with lines

That's what I was afraid of, thanks again tom66

[BryB]

Re: Vizio VW42LHDTV10A screen blue with lines

I may be grasping at straws here but I just took the cover off of the Tcon board to check the ribbon cables and realized that there are no screws holding the board in the tv. My brother must have had it opened at some point, or someone has and didn't put the screws back. Around the board is copper, are the screw points grounds for the board?

[johnboy1313]

Re: Vizio VW42LHDTV10A screen blue with lines

Yes they are

[BryB]

Re: Vizio VW42LHDTV10A screen blue with lines

Great, just found out that my brother did change out the T-con board, lost the screws and looks like installed the wrong t-con board since the mounting holes do not line up.

[tom66]

Re: Vizio VW42LHDTV10A screen blue with lines

You need to ask him if the problem was the same before and try to get the old T-con off him. Failing that get us the LCD panel sticker (e.g. AU OPTRONICS TC4150W9XXX) and we can potentially find a guaranteed compatible replacement; my opinion is though that it is the panel and an incorrect T-con would not cause that.

[BryB]

Re: Vizio VW42LHDTV10A screen blue with lines

He said the screen went black and it had colored vertical lines back in January. He is sending me the original T-con board. I will update again after I get the board and troubleshoot further. I'm just trying to keep from buying a panel or throwing the TV away if I can help it.

[BryB]

Re: Vizio VW42LHDTV10A screen blue with lines

UPDATE!! :-D

Got the T-Con board from my brother in the mail today, installed (screw holes lined up perfectly (even sent the screws LOL)) And here are the results! Turns out it WAS the wrong T-Con board and U33 was bad after all.

Thank you everyone for all your help, I appreciate it!!

[tom66]

Re: Vizio VW42LHDTV10A screen blue with lines

Nice one! And I am surprised a wrong T-con could cause that, I would have expected no picture at all.