(Topic ID: 288998)

Lethal weapon 3 dmd issue

By mohawk640

4 months ago

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  • 4 posts
  • 3 Pinsiders participating
  • Latest reply 74 days ago by mohawk640
  • No one calls this topic a favorite


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#1 4 months ago

Lethal weapon 3 pinball machine is fully working but the dmd is locked on the version and stay like that I can get into test but I can't see anything because of the dmd does not change battery holder has been replaced and new battery install , I was going to order a new ribbon cable to see if that would change .

Could the dmd be bad ? Or the mpu board ?

Any ideas when really help I really don't want to drag it out the person basement ,

IMG_20210221_155620787 (resized).jpg
#2 4 months ago

Its not your DMD nor your cable. The fact that the message is clear and no dots are missing tells me the problem is the game is not fully booting. You should still be able to check voltages on the power supply and mpu to see if the right voltages are where they belong

#3 4 months ago

If he can get into diags, the CPU board is booting.

Data East games of that era also have a CPU on the video controller board. CPU's communicate using a ribbon cable between the CPU board and the video board. Power off, reseat both ends of that ribbon cable making sure you get the connectors back on correctly (no pins or rows missed) and see if anything changes.

2 months later
#4 74 days ago

I forgot about this but the issue was the board behind the display was bad so stern made a new for the person

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