DMD Issue

[Hammerhead]

Started having this problem with my Getaway, but I'm pretty sure it could happen to any DMD.

When you first turn the machine on, there's almost no display. As it warms up, the display improves but never any better than in the photos below. Hopefully this is any easy fix, and doesn't require a new DMD.

 

[Grauwulf]

Hate to burst your bubble, but that's classic display outgassing. You need a new display.

 

[Hammerhead]

DAMMIT!

 

[Menace]

Yep. The "warming up" symptom is classic outgassing.

D

 

[Hammerhead]

What exactly causes outgassing? Is it just an age thing, or are there other circumstances that can cause it? The reason I ask is that this display is already a replacement from original (blue board, forget the manufacturer's name)

 

[Menace]

Lots of factors can contribute to outgassing, but the main one would be age. How many hours the display has been used, ambient temps it was used in (higher temps shorten the life), power supply voltage (too high will age the display quicker) etc.

D

 

[Grauwulf]

It wouldn't surprise me if quite a few older DMD machines are on their 2nd or 3rd replacement displays by now. Especially if they spent most of their life on location.

 

[Uberhare]

http://drpinball.co.uk/index.htm

I'm ordering one for my Dr Who.....