I narrowed this down quite a bit further:[br]
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It has to do with a small piece of flat-flex cable, connecting the LCD-controller-board (which is right underneath the screen) to the LCD-panel itself. There are two so called “heat-bar-attachments” from that board to the LCD. In my case, the problem is within the outer left part of the left flat-flex cable. If I touch this part of the cable with anything, I can make the issue appear and disappear, depending on where I press on it.[br]
I tried to get the flat-flex properly adhered again with some heat, but that did not change anything.[br]
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My guess now is, that there is a microscopic crack within on of the traces on the flat-flex, however, I could not see anything under a microscope.[br]
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Anyone else got any ideas? I will keep you updated, if I can find a solution.[br]
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But it’s certainly that cable (or in some cases maybe the other one on the right) causing this issue. It is a loose connection somewhere, that is depending on heat on mechanical forces, that’s why the issue can be temporarily fixed by not letting the device get to hot or by “bending” the loose connection back together. However, this will never be a real fix. [br]
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You could go for a new LCD (since that comes with a new controller-board), but I am hoping to find a more elegant solution.
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