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Equipment Repairs => LCD TV forum => Topic started by: shopyd on December 21, 2017,09:16:10

Title: lg 50LB659
Post by: shopyd on December 21, 2017,09:16:10

hello experts
i have this problem on my lg
when i start the tv the screen is black but the back light is on .if i disconnect one side of the reebons that is connected from the lcd to the main board  i get a picture on the half of the screen .but when i connect this side back there is no picture at all.so i assume the other half of the screen cause a short to the tcon board and prevent it ro display .the tcon is integrated in the main board not separate.
is it possible that the half of a screen will be defected.anyone has experience this ??
any suggestions??

thanks

Title: Re: lg 50LB659
Post by: downunder on December 21, 2017,15:42:29

Hi shopyd,

Yes, your display panel is knackered. Quite common, especially when overzealous cleaners let liquid run into the bottom of the panel where it corrodes
everything.                  Bruce

Title: Re: lg 50LB659
Post by: shopyd on October 08, 2018,10:24:18

hello sir

are you a tv repair tec.? did you experience this problem? i did not use any liquid on the screen. it came suddenly one day.

are you 100% sure it is not the main board that includes the tcon board

thanks

Title: Re: lg 50LB659
Post by: downunder on October 08, 2018,17:02:53

Experienced? I've been repairing TVs for over 50 years. And yes, I've come across this problem, but you said you disconnected ribbons from the lcd to the main board. Do you mean T-con to main? If so, try same with ribbons T-con to lcd panel. If you get the same situation, then one half of the panel is faulty and dragging the data down.                               Bruce

Sorry, I misread that - no T-con on the TV, built into the main - so only one pair of ribbons. I still say it's the display panel.