LG 60PV400 display problems - Help Please

[plumcrazy]

LG 60PV400-UB powers up, but picture and menu screens are dim and fuzzy and have black horizontal lines running through.
When changing between menus etc, the menu items take a second to fully appear and fade in (like wet ink).

See attached pics.

Last week, this TV had power and sound but NO picture.
Here is a brief history of the issue and what has brought me to this point:

TV was showing signs of color distortion in large, bright areas of picture.
One day, the TV would power up with sound, but NO picture at all.
Z-SUS board had blown fuse and very bad cold solder joints on coils.

Ordered a spare Z-SUS board & installed.

Now I do have picture, but with the issues listed above.
LED on Control Board during power up will flash: Short, Short, Long, Short.
Then, once powered up, will flash: Long, Long , Short, Short, Pause, Repeat.


Further diagnostic suggestions would be greatly appreciated.

Thanks in advance for your time and assistance!
Mike.

[slidewire]

Re: LG 60PV400 display problems - Help Please

You might have purchased a dud board. Check IGBTs & Mosfets on the YSUS also.

[Myers]

Re: LG 60PV400 display problems - Help Please

z buffers or line drivers! The two boards on the side next to the Z-SUS board
when they short they take out the sus board so you need to replace all 3 at same time