DMD issue - Indiana Jones

(Topic ID: 233660)

DMD issue - Indiana Jones


By Love2play

10 days ago



Topic Stats

  • 14 posts
  • 5 Pinsiders participating
  • Latest reply 7 days ago by arolden
  • No one calls this topic a favorite

You

Linked Games

Topic Gallery

There have been 5 images uploaded to this topic. (View topic image gallery).

IMG_2602 (resized).jpg
IMG_2601 (resized).jpg
DMD voltages (resized).png
IMG_2600 (resized).jpg
IMG_2592 (resized).jpg

#1 10 days ago

Couple of issues - first the display disappeared, you can tell that it has messages, but not displayed. Started as partial, now completely blank. However, game still loaded and was playable.

I changed out the batteries and then the game stopped booting up - no ball in chute, all the start up procedures do not happen and the start button does not turn on. Due to no display I can not see the error messages. I tried another set of batteries - same issue. Looked for corrosion, none.

So first, how can I get it to start up again prior to trouble shooting DMD or will the display cause it to not play?

#2 10 days ago

What happens if you take the batteries out and turn the game on?
It should give you a game audits reset message

Also, am I correct in assuming the batteries started the issues or did the dmd go out first?

#3 10 days ago

do you have another display you can swoop out with?
Sound like original display has gassed out.

#4 9 days ago

Hi Helpers -- the dmd went out first, so when I take the batteries out all I hear is one bong - not able to see error message. I do not have another dmd, if I replaced the current one would that fix all the problems or just the display issue?

Also, on the dmd would I buy new cables? See pictures on the one connection that is not a ribbon but rather individual wires -- are they just pressed into the plastic? How would I remove them without damaging?

IMG_2592 (resized).jpgIMG_2600 (resized).jpg
#5 8 days ago

slide the plug off, don't pull on wires.
Before I would buy a new display, is there anybody or place you can get yours it tested?
Being an apprentice not sure where your located.

#6 8 days ago

Also check your voltage's on this plug, to eliminate that as a possible problem.

#7 8 days ago

Please post a picture of your MPU board (bottom left) so it can be checked for battery leakage/corrosion.

The battery issue is completely separate of the DMD being blank/out/off.

#8 8 days ago
Quoted from wdennie:

Also check your voltage's on this plug, to eliminate that as a possible problem.

I agree. It can be a voltage problem. Do you have a multimeter to test with?
Put black meter lead on pin 4 or 5 and use the red meter lead to test the other pins.
1 -112Vdc
2 -100Vdc
6 12Vdc
7 5Vdc
8 62Vdc

DMD voltages (resized).png

#9 7 days ago

Good input --- please hang with me …. I live in Lone Pine, California which is a small town (pop. 2000) and no pinball repair or enthusiasts around - bummer. So I really appreciate your time and ideas.

I tried the voltage and my numbers were different:
1 -119v
2 -107v
6 5v
7 12v
8 62v

So it does look like some kind of voltage issue, but now what do I do to correct?

Here are two pictures on the battery issue - I don't see corrosion.

IMG_2601 (resized).jpgIMG_2602 (resized).jpg
#10 7 days ago

Those voltages are actually fine.

Have you tried simply restating the plugs on the display and the display controller board?

#11 7 days ago

I have re-connected the smaller ribbon band, but am uncertain how to get this larger unit off …. does it slide away from the silver pins?

#12 7 days ago
Quoted from Love2play:

uncertain how to get this larger unit off …. does it slide away from the silver pins?

Yes, that power connector slides off.

The MPU board looks good. Hard to tell about that battery holder though. I would install NVRAM to get rid of the batteries.

#13 7 days ago

Can you test the DMD in another game? If not yours, a friend's game?

#14 7 days ago
Quoted from Love2play:

I have re-connected the smaller ribbon band, but am uncertain how to get this larger unit off …. does it slide away from the silver pins?

Yes, just pull on it.

Then follow it up to the other board it connects to (top right of backbox). Reseat all connectors on that board also.

Promoted items from the Pinside Marketplace
$ 129.00
Lighting - Led
LED OCD
$ 15.00
$ 55.00
Gameroom - Decorations
Pinball Photos
$ 99.99
Playfield - Toys/Add-ons
Lighted Pinball Mods
$ 40.99
Lighting - Interactive
Lee's Parts
$ 105.00
Playfield - Toys/Add-ons
Lermods
From: $ 99.99
Cabinet - Other
Lighted Pinball Mods
$ 69.99
Playfield - Toys/Add-ons
Lighted Pinball Mods
$ 49.99
Playfield - Toys/Add-ons
Lighted Pinball Mods
$ 8.50
Lighting - Led
Bright Lights Pinball
$ 29.99
Cabinet - Sound/Speakers
Lighted Pinball Mods
Wanted
Machine - Wanted
Lynnwood, WASHINGTON
$ 55.00
Gameroom - Decorations
Pinball Photos
$ 69.99
Playfield - Toys/Add-ons
Lighted Pinball Mods
From: $ 369.95
Boards
PinSound
$ 28.00
$ 40.00
Lighting - Other
Rock Custom Pinball
From: $ 200.00
Cabinet - Toppers
liorillusion
From: $ 5.00
Cabinet - Other
Rock Custom Pinball
Wanted
Machine - Wanted
Blandon, PA
$ 21.00
From: $ 29.00
Boards
KAHR.US Circuits
€ 95.00
Lighting - Led
FlipperLED
Great pinball charity
Pinball Edu

Hey there! Got a moment?

Great to see you're enjoying Pinside! Did you know Pinside is able to run thanks to donations from our visitors? Please donate to Pinside, support the site and get anext to your username to show for it! Donate to Pinside