Sharp EL displays LJ640U80
Hello, does anyone have any experience repairing these or any schematics, which seem to be unobtainium.
A common problem is leaking nichicon caps but despite replacing them, this display is still no go.
The 12v rail is being dragged down but both on board fuses remain ok, which is strange.
I wasn’t sure whether to post this in the computer section or tv & video, so please move if necessary.
These displays were used a lot in industrial control and early computers.
Thanks,
James
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