Sharp LC-70LE757U flickering display

[freakaftr8]

Re: Sharp LC-70LE757U flickering display

Well technically these drivers there is a bank of drivers on one side of the screen and there is a bank of drivers on the other side both doing the same thing. The second side of drivers relieves the stress from the first side of the drivers running the horizontal axis. When one side fails it essentially loads down the opposite side of drivers thus putting stress on them twice as hard as one complete side removed. Since it seems that these panels are burning out one side of drivers there is no alternative fix to repairing the panel besides throwing it away. So this is a last resort Repair to a LCD panel that would be otherwise rendered useless. Until somebody comes up with a cheap alternative to a tab bond replacement unit for the masses, this is the only thing that seems to work. There must have been 20 or more Repair as of August of last year and I have not heard or seen any of them fail as of yet with this Repair. As I myself have two tvs now 1 Vizio and 1 sony both still working fine. Everything stays the same, refresh rate colors and brightness. The only drawback to this repair it is just a little bit harder on the opposite side of drivers that are still running the panel. But like I said I have not seen a single failure yet, not saying that it's going to not to happen because it very well could but this is least gives some life left into an otherwise useless television

[hmendez86]

Re: Sharp LC-70LE757U flickering display

Well technically these drivers there is a bank of drivers on one side of the screen and there is a bank of drivers on the other side both doing the same thing. The second side of drivers relieves the stress from the first side of the drivers running the horizontal axis. When one side fails it essentially loads down the opposite side of drivers thus putting stress on them twice as hard as one complete side removed. Since it seems that these panels are burning out one side of drivers there is no alternative fix to repairing the panel besides throwing it away. So this is a last resort Repair to a LCD panel that would be otherwise rendered useless. Until somebody comes up with a cheap alternative to a tab bond replacement unit for the masses, this is the only thing that seems to work. There must have been 20 or more Repair as of August of last year and I have not heard or seen any of them fail as of yet with this Repair. As I myself have two tvs now 1 Vizio and 1 sony both still working fine. Everything stays the same, refresh rate colors and brightness. The only drawback to this repair it is just a little bit harder on the opposite side of drivers that are still running the panel. But like I said I have not seen a single failure yet, not saying that it's going to not to happen because it very well could but this is least gives some life left into an otherwise useless television

hey, but is it true about removing the tab driver from the left side. i have the same problem as the other guy with their tv LC-70LE757.. i disconnected the left driver and the flickering stops, but the left side gets a darker image. so by removing it, it will be fix.

[freakaftr8]

Re: Sharp LC-70LE757U flickering display

hey, but is it true about removing the tab driver from the left side. i have the same problem as the other guy with their tv LC-70LE757.. i disconnected the left driver and the flickering stops, but the left side gets a darker image. so by removing it, it will be fix.

Yes. If that's the problem and by disconnecting it resolved the issue. This is only the case if there are no other issues causing the problems with the TV and by disconnecting the back left side cause you Tv to straighten out yes your picture will be darker on that side. Do you have any horizontal lines going across the screen?

[hmendez86]

Re: Sharp LC-70LE757U flickering display

Yes it had one line, it look like half screen from left to right like it bearly getting to the right, but it stop like half way of screen.the other black lines were the flickering it was doing. I already remove the tab bonding directly from the screen,it was though job to do, because of the side protective aluminium trim. Well any was it was fix I was like woow new tv. I wonder why ,but we'll it is go quality tv for to watch fifa games jeje......I got another 80 inch tv sharp LC-80LE757U ...the this is doing it has a line it is weird line it do like tranverse the picture it's thin and long from right to left and it is like half of the screen like if she wanted to get to the left, but she stoped at Half way horizontal....

[hmendez86]

Re: Sharp LC-70LE757U flickering display

I got a tv, but this is a 80 inch sharp. LC-80LE757U the driver it self does not have board like the 70 inch sharp...it is just a tab with driver only, it has 4 on each side of the panel how this work....am thinking that instead of adding a board there use drivers like jump one to another and connecting with the bottom tabs. I can see veins running from battom to the top drivers. I don't know if am right. ........??????need help in this one bit different as the 70 inch .......

[hmendez86]

Re: Sharp LC-70LE757U flickering display

[budwich]

Re: Sharp LC-70LE757U flickering display

OK... you might want to start your own thread for an 80. But in the mean time, if I understand you right there are tab cable on both sides of the set like the 70's.
You are saying that there are no side boards but that the tab cables have to be interconnected some how and further, they have to be connected to the bottom boards somehow. You need to confirm this better. Of course, if you start your own 80 thread, freakaftr8 might spot it as he has worked on the 80 at least once... it had led issues if I recall.

[sfernandes]

Re: Sharp LC-70LE757U flickering display

Hi guys,

For those of you that has peeled off the left side ribbons that go directly on the panel to fix the common issue on this set is the repair still holding up? just wondering how long a repair like this lasts. Please advise.

Thank you.

[budwich]

Re: Sharp LC-70LE757U flickering display

The "original saved set" is still going fine since Oct. The owner gets tears in his eyes every time I ask if it is still working.... he can't believe I / we save him $2500 for a replacement set... :-)

[sfernandes]

Re: Sharp LC-70LE757U flickering display

The "original saved set" is still going fine since Oct. The owner gets tears in his eyes every time I ask if it is still working.... he can't believe I / we save him $2500 for a replacement set... :-)

That's great news. Thanks for letting me know.

[stlstevej]

Re: Sharp LC-70LE757U flickering display

I have the EXACT same TV (LC-70LE757U) as grizgza started this conversation with and the EXACT same issue. I have read this thread several times and am only confused as to how to get access to remove the ribbon cables from the panel. Do I need to take off the outside bezel to get access or just loosen the driver board and pull the flex cable loose?

[CapLeaker]

Re: Sharp LC-70LE757U flickering display

search for tab bond repair in youtube.

[stlstevej]

Re: Sharp LC-70LE757U flickering display

Not finding any useful videos to help me remove the offending TAB. I see some posts here which say "tear it off". Is that really the only way?

[budwich]

Re: Sharp LC-70LE757U flickering display

if you want your tv back into service, "a tearing you will go".

[stlstevej]

Re: Sharp LC-70LE757U flickering display

budwich,
The only reason I am thinking about doing this is because of your efforts. Thanks for asking so many great and detailed questions and thanks to the BADCAPS community for being so helpful.

Here are 3 photos of my situation
One with everything connected, one with the left side TAB driver board disconnected at the bottom white ribbon cable and one with the right side TAB driver board disconnected (left is re connected) at the bottom white ribbon cable. Since this is non-recoverable I just want to be sure I do the correct side. I am thinking it is obvious that the right side needs to come off - agree?

[budwich]

Re: Sharp LC-70LE757U flickering display

it would appear that indeed the right side (looking from the front of the set) is an issue. As I always suggest, you can do yourself a favor (and piece of mind) by feeding a known test pattern into your set (color smpte bars, equivalent... which can be found in a number of dvds for helping with tv setup)... this will show a picture that is then known to the forum which may highlight other things as opposed to a "running video unknown" video which might be hard to pick out issues from. Anyways, make sure your set is well supported when you remove the frame to get at the tab driver cables as any flexing in the panel will likely bring you to "disaster" in terms potential panel cracks.
If you are successful, like most others, you will be enjoying a beautiful picture again.

[stlstevej]

Re: Sharp LC-70LE757U flickering display

If I lay the TV face up on the carpet how can I get the bezel off?

Can the bezel screws come off while tilted up then gently lay down the screen on the carpet? Then undo the clips?

Ready to try tonight!!

[budwich]

Re: Sharp LC-70LE757U flickering display

Not sure how people work with the tv on carpet.

Basically, I worked on the 70" on a "table top", facing up. :-) This allowed me to unscrew all the bezel screws and lift it off..

I used "wooden standoffs" (2X4 "blocks") strategically place on the "backside" of the set to raise it off the "table surface".... placed on the various empty metal backing plate and frame cross members. The "table" surface was less than the area of the tv. The "wood standoffs" were screwed / attached to fence boards which ran across the table to give "overall supporting footprint" for the table.... basically a support "skeleton" Let's say the table was 3'X5'. The boards and standoffs could be readily position to support most of the set and still allow you to unscrew the bezel from the backside and lift it off. Of course you first have to removed the back cover along with some of the other stuff (speakers). It allows you to leave the boards connected if you chooose your wood pieces wisely... :-) Because the set's bezel and frame are still mostly intact, the set does not flex too much but you still have to lay onto the table / "skeleton" with help and care... gently tipping onto its back.

I am sure there are others ways but for me that was the easiest way as I had the wood pieces around.

I think you might be able to re-attach the stand (if your unit has one), after the back has been removed. The you might be able to stand the tv up on its stand and work from there with a vertical panel... only conjecture on my part.

[stlstevej]

Re: Sharp LC-70LE757U flickering display

Change the name of the site to BADASS. This site saved me big time. If you have a Sharp 70" LC and are experiencing this issue read this thread. Attached are a couple of pictures. I had a 40" x 40" table that I put the TV on face up and crawled around underneath the take the screws for the bezel out. I went all the way around taking out about 50 screws but as I found out when taking the side away that was unnecessary. I could have done just the side I needed and a few on top / bottom to get that side piece off. The other picture is of the offending driver IC which had melted into the plastic. The TAB bonds peeled off like tape. Re-assemble and I am back watching TV.

Thanks to all.

[budwich]

Re: Sharp LC-70LE757U flickering display

glad it worked out. yes there are lots of screws, some holding panels and frames, some holding bezel and frame and some holding bezel members.

another one DOESN'T bite the curb!