Exchange tips and tricks for the Akai MPC4000
By Skool hit da Button Tue Mar 28, 2023 4:20 am
I recently bought a used 4000 it works fine but has a few lines in the screen. I heard there may be some kind of cable fix for this ....dont want to do the new screen thing if I can help it.
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By Telefunky Tue Mar 28, 2023 11:10 am
There are 2 type of (erroneous) lines on screen:
the sharp figured that cover exactly 1 or more lines of pixels full across the display
the „moving“ type that pop up and disappear at various vertical positions in quick sequence.

The latter can in fact be a sign of a worn (or badly placed) display ribbon cable, usually at the main circuit board end.

Sharp missing lines are a consequence of missing contacts of the display screen itself and are almost impossible to repair. There is a description by someone who tried to fix this and gave up in the end here on the board.