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DMD Display problem

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By jeffgoldstein2

3 years ago


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  • Started 3 years ago
  • 16 posts
  • 4 Pinsiders participating
  • Latest reply 3 years ago by markmon

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#1 3 years ago

My DMD display just is starting to go out. Lots of pixels flashing and then a bunch of them are not showing up all of a sudden. Do DMD displays tend to just completely crap out at once?

Do I just need to order a new DMD display or what is the normal fix for this?

Thanks for the help!


#2 3 years ago

I am no expert on DMDs. However, any time I have ever had a problem it was the ribbon cable connectors. I clean them with rubbing achochol, clean the pins on the boards and then attach them back. So far that has worked for me every time.

I wish you the best of luck and I hope someone like LTG sees your post.


#3 3 years ago

1) Yes, DMD's can crap out at once
2) Every game is not hte same. You didnt list your game. This prevents helping you.
3) Ribbon cable being reseated is always a good first step.

Try describing your problem better, include pictures, the game, how often it happens, if it fixes after power cycle, etc.


#4 3 years ago

I will give that a shot.

Thanks!


#5 3 years ago

It seemed to help now there are only a couple pixels flickering.


#6 3 years ago
markmon said:

2) Every game is not hte same. You didnt list your game. This prevents helping you.

This is a spiderman Red Machine

Washing the ribbon cable seemed to help it out. I see flashing pixels and it seems to be the worst when I am adjusting the volume on the Pinball Machine.

NOTE: I installed a SUB on it the other day and had no problems with it all of yesterday but it started happening today.

I will try to post some photos shortly.


#7 3 years ago

Yeah, seeing what it looks like would help a lot. You may also need to reflow some connectors but I would prefer you get a more expert opinion than mine before you break out the soldering iron.


#8 3 years ago

You reseated the cables also on the board side in the cabinet?

Before soldering I suggest you start swapping parts between your Family Guy and your spiderman one thing at a time and test. You could start by swapping the whole ribbon cable that goes from the CPU board into the Dmd board. Then you can swap dmds and Dmd controller boards (swapping the roms). You'll quickly get to the bad component when the problem moves to the other machine.


#9 3 years ago

Thanks Markmon!

I first swapped ribbon cables and nothing changed. Then I swapped the actual dmd from my fg to sm and it worked perfectly!

I guess I need to order a new dmd.

Thanks again


#10 3 years ago

Could you post a picture of what is Erin with the DMD please?


#11 3 years ago
Stack15 said:

Could you post a picture of what is Erin with the DMD please?

Autocorrect. Love it


#12 3 years ago
jeffgoldstein2 said:

Thanks Markmon!
I first swapped ribbon cables and nothing changed. Then I swapped the actual dmd from my fg to sm and it worked perfectly!
I guess I need to order a new dmd.
Thanks again

Jeff,

It may certainly still be fixable. If you prefer to just order a new one, I'd highly suggest listing your old DMD for sale with a description of the problems and a picture. I sure someone would be willing to give you a few bucks and try to fix it themselves.


#13 3 years ago
tonymiddendorf said:

Autocorrect. [:)] Love it

&_%#%#

Erin = wrong


#14 3 years ago
jeffgoldstein2 said:

Thanks Markmon!
I first swapped ribbon cables and nothing changed. Then I swapped the actual dmd from my fg to sm and it worked perfectly!
I guess I need to order a new dmd.
Thanks again

Did you verify that the old Dmd behaved badly in the Family Guy?


#15 3 years ago
markmon said:

Did you verify that the old Dmd behaved badly in the Family Guy?

I did not do that, I should try that as well.


#16 3 years ago
jeffgoldstein2 said:

I did not do that, I should try that as well.

Right. Otherwise it was solved by the reseating of cables etc.



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