jvc lt-42dg1 lcd

[attainteddragon]

hey guys, im trying to sort out this lcd with video issue.
when cold, it will have perfect picture for a few minutes, or with signal it will fail within about 20 seconds.
the picture fault is also over the menu as well.
i have reseated all lvds and ribbon cables and checked tab bonds with no luck.
i have also heated and cooled the main and t-con to try to find the fault, with no luck.
i havn't found any voltages that are out of tolerance or unsteady.

[ben7]

Re: jvc lt-42dg1 lcd

Have you checked the on-board voltages too? Like, the voltages regulated by the voltage regulators on the main board.

[attainteddragon]

Re: jvc lt-42dg1 lcd

main voltage regulators.
u11 eh13a
0.0
1.794
3.283

u13 l7805cv
-0.4 mv
3.279
5.02

u16 eh16a
0.0
3.283
5.02

u18 eh16a
7.83
0.0
4.97

u36 az1084s
-o.1 mv
3.288
5.00

u28 eh1.1a
1.372
2.616
5.02

u39 eh16a
-0.3 mv
3.284
5.02

u18 is a different package type that sits above the aerial port, but seems way out of place from what i can tell.