Hello all, long time reader first time poster. I appreciate your time with helping me with my problem. I have a Creature From The Black Lagoon machine which has been in storage for an extensive period of time. Upon plugging it in i noticed the Service Switches were not working, and only had one volt going to them, and that the DMD was garbled with random dots on it. I had a working Slug Fest machine which shares the same DMD controller and Power Driver Board so i swapped them over and Voila! the switches and screen looked perfect...for about 10 seconds when i noticed the screen started showing vertical lines and and dots like the previous DMD did. I quickly turned the game off and now am hoping someone could tell me what could destroy a good working DMD controller board? I'm getting 15v on J606-7, when it's unplugged from the DMD Controller, which is supposed to be 12v.

Thanks for the replies guys, when I first started getting the game ready after sitting for so long the first thing I checked were the memory batteries. Thankfully they hadn't leaked and as you can see from the pics there is not the usual corrosion on the diodes and resistors below the battery pack. I've also attached a picture of the DMD Controller, although unplugged, for reference.

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Well, this was my other good DMD Controller unfortunately. The thing about the matter is that originally i had a scrambled display, so i replaced the DMD Controller with one from a known working good machine. Then after working fine for approximately 10 seconds the new controller started showing signs similar to the first controller. This second DMD Controller had been working fine for an extended period of time so the fact that as soon as i put it in the game it started showing the same signs as the last one makes me think something is frying whatever DMD Controller i put in.

Ok, so i started taking a closer look at the ribbon cable from the DMD Cont. to the DMD itself and noticed someone had soldered together one of the wires and left it exposed. After swapping cables with another machine the screen works perfectly! I appreciate your help everyone. Now i just need to figure out why 3/4 of the solenoids don't work, could this be because i took the driver board from Slugfest which has much fewer solenoids than Creature? I understood that they were they same driver boards as they have the same model number and look exactly the same to me. But i guess this is a question for a new thread.

I re seated the ribbon cable and about half of the solinoids began working. After running a solinoid test on repeat for a single none working solinoid I pressed on ribbon cable connector and voila it began working. Everything is working as it should now. Thanks a lot guys, couldn't have done it without you!