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Old 11-15-2020, 02:07 PM   #1
TV HELP
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Default Sharp LC-50LB371C LED TV VERTICAL LINES

Hello,

I’m new here and would love to get some help....I have a 5 year old Sharp LED tv with vertical lines.

So far I have removed and cleaned most of the ribbon cables with no change.....any help with the next testing steps such as voltage checks or? would be highly appreciated.

Thanks

Last edited by TV HELP; 11-15-2020 at 02:14 PM.. Reason: Pictures
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Old 11-16-2020, 09:30 AM   #2
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Default Re: Sharp LC-50LB371C LED TV VERTICAL LINES

Could it be the t-con
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Old 11-16-2020, 10:02 AM   #3
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Default Re: Sharp LC-50LB371C LED TV VERTICAL LINES

I think it's a bad tab bond, try tapping on the bezel, NOT the screen where the line is, see if the line goes away or changes any.
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Old 11-16-2020, 10:32 AM   #4
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Default Re: Sharp LC-50LB371C LED TV VERTICAL LINES

Only repeating lines/patterns may be tcon issues. Single random vertical lines or bands are bad panels.
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Old 11-16-2020, 10:54 AM   #5
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Default Re: Sharp LC-50LB371C LED TV VERTICAL LINES

When I disconnect the 2 ribbon cables that leave the T-Con board and go to the panel the lines go away......not sure if this means anything?

Last edited by TV HELP; 11-16-2020 at 11:01 AM..
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Old 11-16-2020, 01:10 PM   #6
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Default Re: Sharp LC-50LB371C LED TV VERTICAL LINES

How do I test the T-Con board to confirm it works or not?
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Old 11-16-2020, 02:34 PM   #7
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Default Re: Sharp LC-50LB371C LED TV VERTICAL LINES

Try wiggle or shake the video input cables, see if that helps.
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Old 11-16-2020, 04:26 PM   #8
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Default Re: Sharp LC-50LB371C LED TV VERTICAL LINES

if you detach tcon outputs its normal that lines go.away since there is no more signal, locate the tabs where appears bad columns, then put a shim under them, then warm the back of the chip so on the amber side with a sokdering iron
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Old 11-16-2020, 05:03 PM   #9
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Default Re: Sharp LC-50LB371C LED TV VERTICAL LINES

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Originally Posted by Davi.p View Post
if you detach tcon outputs its normal that lines go.away since there is no more signal, locate the tabs where appears bad columns, then put a shim under them, then warm the back of the chip so on the amber side with a sokdering iron
Can you please send a picture of where I do this
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Old 11-16-2020, 05:16 PM   #10
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Default Re: Sharp LC-50LB371C LED TV VERTICAL LINES

defenately not, i'm at hospital now..
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Old 11-16-2020, 06:27 PM   #11
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Default Re: Sharp LC-50LB371C LED TV VERTICAL LINES

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defenately not, i'm at hospital now..

I hope you are ok!
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Old 11-16-2020, 06:28 PM   #12
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Default Re: Sharp LC-50LB371C LED TV VERTICAL LINES

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defenately not, i'm at hospital now..

Are you in Milan Italy? I have been there!
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Old 11-17-2020, 12:15 AM   #13
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Default Re: Sharp LC-50LB371C LED TV VERTICAL LINES

yes.. so basically,, if you detach tcon from the large screen boards , then you flip them you see the green part of the tab where there is a chip, ok you must put a shim under it provisional, then you put eveeverything normal and you warm under the chip especially in the zone that makes appear again the missing lines, so this test at tv switched on, i have near reapaired one this way.
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Old 11-18-2020, 08:22 AM   #14
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Default Re: Sharp LC-50LB371C LED TV VERTICAL LINES

Any other ideas?
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Old 11-18-2020, 09:52 AM   #15
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Default Re: Sharp LC-50LB371C LED TV VERTICAL LINES

Buf why other ideas? I have given you an idea, you have done what?...
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Old 11-18-2020, 11:21 AM   #16
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Default Re: Sharp LC-50LB371C LED TV VERTICAL LINES

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Buf why other ideas? I have given you an idea, you have done what?...
I want to try your option Iím just not sure exactly what you want me to do
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Old 11-18-2020, 11:47 AM   #17
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Default Re: Sharp LC-50LB371C LED TV VERTICAL LINES

sorry i can't explain it better
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Old 11-18-2020, 12:05 PM   #18
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Default Re: Sharp LC-50LB371C LED TV VERTICAL LINES

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Originally Posted by Davi.p View Post
sorry i can't explain it better
Thank you very much for your help!
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Old 11-20-2020, 09:32 PM   #19
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Default Re: Sharp LC-50LB371C LED TV VERTICAL LINES

?????
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Old 11-28-2020, 01:21 PM   #20
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Default Re: Sharp LC-50LB371C LED TV VERTICAL LINES

I took part of the bottom bezel off and discovered a sticky substance on one of the I believe their called tab bonds maybe someone spilled something .....could this be an issue?


I will be cleaning the area up and testing.
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