Lg 50pq30 black section on screen

[crdz66]

Hello friends.

I need you opinion on this tv.
I get a plasma tv with 2/3 of the screen working good.
The 1/3 part show some verticals lines and black screen.
Something that i noticed is the fail start right on the right x board begin.
When i pull this board from the tv, i noticed couple tcp flexible connectors was loose. I reconnect those but still the problem is there.
Plus, i check the tcp ic and looks good.
Do you think the right x board become bad?

Thanks.

[ReeceyBurger123]

Re: Lg 50pq30 black section on screen

Have you images please ?

[crdz66]

Re: Lg 50pq30 black section on screen

[ReeceyBurger123]

Re: Lg 50pq30 black section on screen

Hmm ok have you tried running the test patterns ?

[crdz66]

Re: Lg 50pq30 black section on screen

I try but doesn't work
I disconnect the smps of main board.
the lvds from control board to main board
and short the little two connectors and the tv doesn't power on

[ReeceyBurger123]

Re: Lg 50pq30 black section on screen

It should do maybe you jumped the wrong pins ? Also you dont need to unplug Psu from the Mb just the Lvds.

[crdz66]

Re: Lg 50pq30 black section on screen

ok. I did it
But the test patterns are running on 2/3 of the screen.
Still one section remain with couple vertical lines and black.

[Alastair E]

Re: Lg 50pq30 black section on screen

Could be signals to or supplies to the COF chips related to that section of screen.

More likely--seeing its an LG, the COF chips are stuffed, --Unrepairable.

[crdz66]

Re: Lg 50pq30 black section on screen

so sad.
thanks