ASUS VH222 has no image

[budm]

Re: ASUS VH222 has no image

I would try cooling the logic board first, then the T-CON board, if the problem is on the T-CON, then that will be real difficult to repair.

[ucdzombie]

Re: ASUS VH222 has no image

I would try cooling the logic board first, then the T-CON board, if the problem is on the T-CON, then that will be real difficult to repair.

OK I didn't try to cool it. However, I found something new. It has to do with movement. I tried tapping the side of the monitor and when I tap it, the lines are gone.

When I was disassembling the monitor previously, at one point I opened the screen assembly. So maybe I ripped some cables there?

[Davi.p]

Re: ASUS VH222 has no image

Primary negative and secondary ground can have a different voltage, so that potential could have damaged the mainboard or also the tcon bd but you will never get on top of this i think, it is much probably damaged one of the bigger chips, from the few i know... you can if you want try to find a new main bd or leave it so if it don't hurt too much..

[budm]

Re: ASUS VH222 has no image

"When I was disassembling the monitor previously, at one point I opened the screen assembly. So maybe I ripped some cables there?" OK, that is one important info, it sound like the bonding between the LCD glass panel and the long PCB has loose tab bonding. The connections can expand from the heat of the lamps, they do get pretty hot.

[ucdzombie]

Re: ASUS VH222 has no image

"When I was disassembling the monitor previously, at one point I opened the screen assembly. So maybe I ripped some cables there?" OK, that is one important info, it sound like the bonding between the LCD glass panel and the long PCB has loose tab bonding. The connections can expand from the heat of the lamps, they do get pretty hot.

I remember some of the tabs came loose when I opened it. But I didn't know what to do nor did I think it was important. I'm such an idiot! So how should I fix the loose bonding? Double sided tape?

[budm]

Re: ASUS VH222 has no image

Not easy, I never bother fixing bad tab bonding on monitor. I use thermal transfer pad, you can use rubber pad to press down on the tab. The bad part is that you have to take the panel apart again and just do not cause more or new damage.
https://www.badcaps.net/forum/showthread.php?t=25371

[ucdzombie]

Re: ASUS VH222 has no image

Not easy, I never bother fixing bad tab bonding on monitor. I use thermal transfer pad, you can use rubber pad to press down on the tab. The bad part is that you have to take the panel apart again and just do not cause more or new damage.
https://www.badcaps.net/forum/showthread.php?t=25371

This is the status of my screen right now:





I think the top tabs are loose. The other night I was able to let it run without problem for an hour, because I remember repositioning the TCON board (which is connected to the taps). Do you see anything unusual? The third picture shows some glue on the side tap.

[ucdzombie]

Re: ASUS VH222 has no image

Not easy, I never bother fixing bad tab bonding on monitor. I use thermal transfer pad, you can use rubber pad to press down on the tab. The bad part is that you have to take the panel apart again and just do not cause more or new damage.
https://www.badcaps.net/forum/showthread.php?t=25371

OK I think I fixed the problem using your solution. The monitor appears to be stable after many hours of normal usage. I placed rubber pads on top of the tabs and they're now stablized. Thank you all!!!!