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Thread Tools | Display Modes |
10-18-2020, 09:50 AM
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#1 |
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Member
Join Date: Mar 2010
Posts: 95
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LG 47LS4500 picture issue
After swapping the power supply, this is how the picture looks. Vertical band lighter top to bottom of display
PS had a number of issues bulged electrolytics, 15A fuse blown, and one ceramic cap bulged. Might have been other problems too, but swapping the PS was simplest fix, and I have no information if the set had this vertical bar before PS died. Suggestions? Thanks |
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10-18-2020, 09:56 AM
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#2 |
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Badcaps Veteran
Join Date: Jan 2013
City & State: midwest
My Country: U.S.
I'm a: Knowledge Seeker
Posts: 6,020
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Re: LG 47LS4500 picture issue
Grab the bezel with both hands and give it a squeeze, right there where the line is, try it on top and bottom, just squeeze the bezel, don't touch the screen, see if the line changes any.
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10-18-2020, 10:25 AM
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#3 |
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Member
Join Date: Mar 2010
Posts: 95
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Re: LG 47LS4500 picture issue
Do you mean squeeze bezel at top and bottom of lighter area?
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10-18-2020, 10:32 AM
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#4 |
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Member
Join Date: Mar 2010
Posts: 95
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Re: LG 47LS4500 picture issue
Tried squeezing bezel at top and bottom. No change--back panel is still removed from replacing PS.
I do get three blinks of the On/Off red light when the set turn on. |
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10-18-2020, 02:45 PM
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#5 |
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Badcaps Veteran
Join Date: Jan 2013
City & State: midwest
My Country: U.S.
I'm a: Knowledge Seeker
Posts: 6,020
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Re: LG 47LS4500 picture issue
Feed it a signal see how it displays, maybe try a dvd player.
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10-18-2020, 05:40 PM
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#6 |
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Badcaps Veteran
Join Date: Nov 2015
City & State: BC
My Country: Canada
I'm a: Knowledge Seeker
Posts: 1,006
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Re: LG 47LS4500 picture issue
That vertical band band corresponds to one of the TAB bond/flex cables (second one in from the edge). You can try putting some pressure on it but likely not repairable.
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10-18-2020, 06:56 PM
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#7 |
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Badcaps Veteran
Join Date: Jan 2013
City & State: midwest
My Country: U.S.
I'm a: Knowledge Seeker
Posts: 6,020
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Re: LG 47LS4500 picture issue
If putting pressure works, it may be a candidate for the shimming technique.
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10-21-2020, 07:25 AM
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#8 |
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Member
Join Date: Mar 2010
Posts: 95
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Re: LG 47LS4500 picture issue
Any particular method for this pressure treatment?
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10-21-2020, 09:14 AM
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#9 |
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Badcaps Veteran
Join Date: Jan 2013
City & State: midwest
My Country: U.S.
I'm a: Knowledge Seeker
Posts: 6,020
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Re: LG 47LS4500 picture issue
One there, might be able to find some with more detail but the gist is there: https://www.youtube.com/watch?v=8l5ORKjQF5U
__________________
Signature: Any Stooge can find an "Idiot" by looking in his mirror. |
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10-23-2020, 08:31 AM
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#10 |
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Member
Join Date: Mar 2010
Posts: 95
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Re: LG 47LS4500 picture issue
Tried everything suggested and no-go. It's headed to the curb. Thanks regardless
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