(Topic ID: 303581)

Help !!!! DMD issue?

By Rkrall

1 year ago

Topic Stats

  • 5 posts
  • 5 Pinsiders participating
  • Latest reply 1 year ago by Morgoth00
  • No one calls this topic a favorite


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#1 1 year ago

Are there symptoms a sign of a bad dmd or bad cable/ board?

Any troubleshooting tips would be great!!

Already reseated cables from dmd and board.

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#2 1 year ago

Not sure what cables you reseated, but this seemed to fix a similar problem here:


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1 week later
#3 1 year ago

I just had a similar looking problem tonight, and reseating my ribbon cables solved the issue. One seemed to have shaken a little loose, and I suspect that was the issue.

#4 1 year ago

Replace the cables. They are over 30 years old and most likely have internal corrosion.

Re-seating them will probably work but it isn't a fix. The problem is likely to return.

#5 1 year ago

Last time I had a scrambled dmd, removing and reseating IC chip fixed it. Try doing that with U6

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