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Wednesday 10 January 2018 at 09:28
Quoted from ChrisHibler:First, run display test as mschonbrun suggests, above.
Second, if you have another WPC game (not WPC-95), swap DMD controllers to see if the problem follows. You can't damage the game doing this.
If the problem follows the board, there are two filter caps on the board that ar...
Source: http://pinside.com/pinball/forum/topic/rolling-lines-on-dmd#post-4167769