TAF DMD

[john valentine]

The DMD on my Addams Family has just suddenly gone blank and died .. not gradually, it just went blank and that's it! Nothing obvious presents itself, all the fuses that I can see are OK .. where do I look/how do I troubleshoot? thanks

 

[M4carp]

Dmd driver board might have high voltage circuit out.

 

[pinballmania]

Measure the voltages supplied by the driver board. Likely one of the circuits has died. There are some recent threads here describing how to do this.

 

[john valentine]

Can’t find the threads .. what should I be searching for (dmd voltage check ...) etc

 

[Durzel]

One or more of these voltages is likely to be way off. Pin 1 and 2 should have a difference of 12V, so if pin 1 is -120V, pin 2 should be -108V, etc.

 

[john valentine]

Cheers chaps .. 1 & 2 the problem I think, board on its way to Phil P.

 

[Durzel]

Depending on the cost to fix you might want to consider buying a ColorDMD, as this doesn't use the HV voltages at all.