(Topic ID: 239914)

Pinball magic DMD noise.


By Moto_bone

1 year ago



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  • 16 posts
  • 7 Pinsiders participating
  • Latest reply 1 year ago by transprtr4u
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#1 1 year ago

This is my first Capcom game and I'm trying to familiarize myself with the boardset and all of the Capcom nuances.

I do all my own board work myself and the SOIC packaging doesn't scare me away.

My question- anytime I have the coin door open to access the menus, I've got some decently audible humming that is definitely coming from the DMD.

Is this normal functioning of this particular setup or is this a sign of perhaps the display power board needing rebuilt?

Also have a secondary problem that I noticed. The red flash lamp assembly in the upper left part of the playfield never flashes. New bulbs, de-soldering and reflowing the header didn't work. The manual does not clearly show that solenoid. I'm thinking it's supposed to flash with the wand flasher in the backbox? Anyone?

IMG_20190330_203204 (resized).jpg
#2 1 year ago
Quoted from Moto_bone:

Is this normal functioning of this particular setup or is this a sign of perhaps the display power board needing rebuilt?

If it's a loud hum that can be heard across the room, that could mean that the DMD is dying. A dying DMD also puts a lot of stress on the components that drive the DMD, so it is usually best to replace the DMD.

#3 1 year ago

The red upper flash should have a connection to one of the flash bulbs
in the back box. I don't remember which one, but there are 2 that flash under the P on pinball
and the M on magic image, and I think the red dome should be flashing with one of them,
and green dome with the other in attract mode.
Also you can't use led 906's in Capcoms, must be incandescents.

#4 1 year ago
Quoted from ForceFlow:

If it's a loud hum that can be heard across the room, that could mean that the DMD is dying. A dying DMD also puts a lot of stress on the components that drive the DMD, so it is usually best to replace the DMD.

Oh no! Good reason to buy a color LED display!

I find it strange that it only happens when I open the coin door to access the menus though?!

#5 1 year ago

Mine is always louder when in the service menus too, not sure why that is though.

#6 1 year ago
Quoted from bobukcat:

Mine is always louder when in the service menus too, not sure why that is though.

Yeah, slightly louder no matter the brand of DMD that is in the game. Normal to me.

#7 1 year ago

Curious if color DMD will make sounds as well?!

#8 1 year ago
Quoted from Moto_bone:

Curious if color DMD will make sounds as well?!

No sound issue with the ColorDMD as it only uses 12v, not the -112v,-100, nor the 62v.

#9 1 year ago

Could it be a cap?

#10 1 year ago
Quoted from McPin54:

Could it be a cap?

I've got a good esr meter. I'll check the Caps and at the least see if they are within spec!

#11 1 year ago

Even with new capacitors on the DMD power board, you will still notice a difference with the door open.

As I mentioned in the Breakshot club, I advise to change all the Electrolytic capacitors on the DMD power board as they will eventually leak and will bridge between 2 of the high voltages and burn a hole in the board.

Installing a ColorDMD into a Capcom game, you can then remove the DMD power board as it no longer will be needed since it supplies only the high voltages for the DMD.

#12 1 year ago
Quoted from PinballManiac40:

Even with new capacitors on the DMD power board, you will still notice a difference with the door open.
As I mentioned in the Breakshot club, I advise to change all the Electrolytic capacitors on the DMD power board as they will eventually leak and will bridge between 2 of the high voltages and burn a hole in the board.
Installing a ColorDMD into a Capcom game, you can then remove the DMD power board as it no longer will be needed since it supplies only the high voltages for the DMD.

Thanks for the tips! We need a Capcom sticky with information like that!

I've caught the Capcom bug- definitely see myself getting a breakshot at some point so all these tips are helpful for sure!

#13 1 year ago
Quoted from Moto_bone:

I've caught the Capcom bug- definitely see myself getting a breakshot at some point so all these tips are helpful for sure!

Awesome. I have yet to play a BBB or an Airborne.

#14 1 year ago

Fun game ,great wireforms and call outs. Needs the magic touch of Colordmd. Like all Capcoms great display animations

#15 1 year ago
Quoted from transprtr4u:

Fun game ,great wireforms and call outs. Needs the magic touch of Colordmd. Like all Capcoms great display animations

That starts with having a Sigma display. I'm sure there are several single colors that would make that display look great.

#16 1 year ago
Quoted from PinballManiac40:

That starts with having a Sigma display. I'm sure there are several single colors that would make that display look great.

The Colordmd LCD has been in for a long time !

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