DMD display is not working

tophatne1

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Just picked up a used but working DMD to replace the one in my GETAWAY: HIGH SPEED 2 pin since the DMD was out and this one does not work either.

So now I know it's not a problem with the DMD. I'm assuming it's something on the DMD board possibly. Not sure.

If you were me what would you check next and how would you find out how to perform this check correctly?

I just got a multi-meter. Not sure what I'm doing with it yet. lol.

Total newb. This is my first pin.
 
measure the voltages on the pins of the connector, you should have +5, +55to65, +103to113, and minus of those as well,

if you get like 40 or something way off, then you need to rebuild the high voltage section of your dmd controller

http://www.greatplainselectronics.com/proddetail.asp?prod=WPC-HVP-KIT



Just picked up a used but working DMD to replace the one in my GETAWAY: HIGH SPEED 2 pin since the DMD was out and this one does not work either.

So now I know it's not a problem with the DMD. I'm assuming it's something on the DMD board possibly. Not sure.

If you were me what would you check next and how would you find out how to perform this check correctly?

I just got a multi-meter. Not sure what I'm doing with it yet. lol.

Total newb. This is my first pin.
 
I just rechecked the fuses for continuity and one of them has failed.

I'm going to pick up a fuse form radio shack tomorrow and see if that mixes the issue.

Hopefully that will it.

Thanks for the input.
 
That's most likely your problem. I had a dead DMD in a pinball that I picked up....ended up being the +100 -100 fuses that were blown.
 
So the 3/8A 250V fuse failed the continuity test.

I went to Rat Shack and all they had was 1/2A 250V slow blow fuses. Can I use that or is it to risky?
 
So the 3/8A 250V fuse failed the continuity test.

I went to Rat Shack and all they had was 1/2A 250V slow blow fuses. Can I use that or is it to risky?

A fuse blowing can be a simple failure (man made bound to fail) however a fuse blowing is usually a sign of problems else where and the fuse lets go to ensure no damage is created else where.

Just call your local auto store and I would be they have the correct fuse in stock. Speaking of correct fuse, look that fuse up in the manual and ensure the prior owner didn't just slap in what they had available.
 
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