(Topic ID: 206733)

How I botched ColorDMD install and broke my DE Star Wars


By Dkjimbo

3 years ago



Topic Stats

  • 25 posts
  • 16 Pinsiders participating
  • Latest reply 6 months ago by zahner
  • Topic is favorited by 3 Pinsiders

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#1 3 years ago

What did I do wrong!?!? So frustrated!!! Installing a color dmd (LED) in Data East Star Wars. Here we go. Turn the game on and play a game before starting the install. Working 100% everything is fine. Turn the game off and follow the instructions (this is basic stuff guys!) and turn the game on. Hmmm. GI comes on but game is not booting. Very strange. The ColorDMD is working fine and i can go into the diagnostics on screen (colorDMD diagnostics not the game diagnostics) Flip on and off and on and still no boot. WTF? I remove the power adapter connector from the Rotten Dog power supply board and connect the 15pin power connector directly into the RD board to take the color dmd out of the equation to see what happens. Turn the game back on and POOF!!!! I hear what sounds like a coil lock on somewhere and gi flashes brightly and F5 on the RD power supply and F5 on the diver board blow up. Turn the machine off. Flip it back on partial gi is working, no boot, r2d2 diagnostic test appears to start and then poof the f6 on the driver board starts to glow and blows up.

Wow....can’t say I’ve ever experienced anything like this!!! Thoughts or ideas?!?

#3 3 years ago

Where do I even start troubleshooting this??

#5 3 years ago

But somehow the colorDMD triggered all this so replacing transistors and coils and fuses won’t really solve anything...unless it was a total freak coincidence that after the colorDMD install the whole thing went haywire and those issues are not related to the colorDMD? The game was playing perfectly moments before...and the game wouldn’t boot after the color dmd install so the problem is more than just whatever high power issUe blew all those fuses...just makes no sense...

16
#11 3 years ago

Update!! The game is once again operational. After replacing all three of the blown fuses and doing a couple of very fast power cycles to determine which coils were locked on it turns out that a total of four we’re locked on. Three of the pop bumpers and the drop target bank reset. All four of those are run by transistors on the CPU board and all four of the tip 102 transistors were shorted. Three of them were on the same connector and one of them was on another connector. None of the small pre-drive transistors were affected and nothing on the power driver board were affected. None of the coils were locked on long enough to burn up and all of the diode’s checked out OK so no need to worry about those parts.So, what did I do wrong? Well the color DMD rep Hit the nail on the head when I first installed the color DMD I had reversed the five volt connector which apparently sent shockwaves through the entire system and did a fair bit of damage but thankfully nothing that isn’t easily repaired with parts on hand. Big lesson learned on this one! Sometimes it’s the simplest things that can cause the biggest problems. I had no idea that reversing the power connector on the DMD control board could literally blowout so many things on the CPU board. I depleted my on hand supply of tip 102 transistors but all is well now in Star Wars land and the color DMD looks amazing! Thanks everybody for your help and Encouragement. I am super impressed with how the LED color DMD looks and I’ll plan to pick up a few more for my other games

#17 3 years ago

Agreed guys - certainly don’t want it to sound like it was ColorDMD fault that this occurred, it was my rushing and overconfidence and not checking my work for basic stuff!!

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