(Topic ID: 162520)

dmd display ghosting and dotting on my roadshow

By boastaflow

7 years ago



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#1 7 years ago

Hi. Wondering if anyone has any ideas on wast going on with my dmd on my roadshow? Was playing it over the weekend and the dmd started ghosting and dots appearing everywhere can any help out with this issue and wat in tails to fix issue.... here are few pics of wast happening
Some images that pop up like free play,todays high scores have no dots.but high scores and game play are doted and ghosting with test screen......plz help ?

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#2 7 years ago

I always reaeat all cables in head and the two on dmd just to be safe. Also push the socketed chips in make sure they are snug in the board. Just had a t2 giving me issues and that fixed it

#3 7 years ago

Il try that thax for info if that doesnt work could it be anything else?

#4 7 years ago

Yea I would start with the ribbon cables . I would personally replace all of them . They are notorious for causing crazy shit .

#5 7 years ago

Ditto on reseating both ribbon cables that start at the top of the MPU board.

#6 7 years ago

Interesting. Yes, start with the ribbons.
After that, it's probably an oddball logic problem in the ping pong page swapping on the dot controller.
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