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Equipment Repairs => LCD TV forum => Topic started by: letmefixit on October 02, 2020,00:15:36

Title: LG - 55LS4500 - Vertical Lines
Post by: letmefixit on October 02, 2020,00:15:36

Hi,

I need help to resolve this issue.

TV : 55LS4500
Issue : Vertical lines end to end.

When i switch on, power LED (RED) blinks 3 times and the vertical lines show up and stays. I replaced the t-con board today but still having issues.

I can hear the sound but not the actual video. only vertical lines.

Thanks

Title: Re: LG - 55LS4500 - Vertical Lines
Post by: astracat on October 03, 2020,12:09:11

hi
looks like main display connection problem try pressure on screen flexies to see if it changes
regards
astracat

Title: Re: LG - 55LS4500 - Vertical Lines
Post by: letmefixit on October 04, 2020,15:16:30

Quote from: astracat on October 03, 2020,12:09:11

hi
looks like main display connection problem try pressure on screen flexies to see if it changes
regards
astracat

I tried that too. I cleaned the flex cables and put it back. still no change. Also i checked the voltage in the t-con board test points. Here are the values.

fuse : 12v
VDD : 16.9v
VGH : 26.7v
VGL : -6.9v
VCOM : 7.9v

thanks

Title: Re: LG - 55LS4500 - Vertical Lines
Post by: astracat on October 05, 2020,13:20:46

hi
flexies tend to come away on screen end not its sockets
regards
astracat