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Author Topic: Help - DMD Quits Working  (Read 4639 times)

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JeepMonkey

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Help - DMD Quits Working
« on: August 15, 2008, 08:35:47 pm »
The DMD on my JP - The Lost World has a problem.  After playing for around 10 minutes, the DMD goes from displaying great to displaying nothing.  Gameplay is just fine, only the DMD quits working.  No light at all.  A few months ago, this would happen, turn the machine off, wait a few minutes, then the DMD would patrially come on.  Now, it takes probably over an hour for the display to work again, but for only around 10 minutes.

Any ideas on how to fix this?  Do you fix DMDs or just replace them?
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ChadTower

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Re: Help - DMD Quits Working
« Reply #1 on: August 15, 2008, 08:40:15 pm »
Quote from: JeepMonkey on August 15, 2008, 08:35:47 pm
The DMD on my JP - The Lost World has a problem.  After playing for around 10 minutes, the DMD goes from displaying great to displaying nothing.  Gameplay is just fine, only the DMD quits working.  No light at all.  A few months ago, this would happen, turn the machine off, wait a few minutes, then the DMD would patrially come on.  Now, it takes probably over an hour for the display to work again, but for only around 10 minutes.

Any ideas on how to fix this?  Do you fix DMDs or just replace them?

DMDs can be fixed but it's all fine SMT soldering.  The problem may not actually be your DMD, though.  There are a lot of other reasons for a DMD to crap out and the fact that it craps out entirely, rather than partially crapping out, actually makes it more possible that the problem is something else.
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Ken Layton

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Re: Help - DMD Quits Working
« Reply #2 on: August 17, 2008, 08:06:55 pm »
Yup, replace coonectors and rebuild the high voltage section of the power supply board.
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JeepMonkey

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Re: Help - DMD Quits Working
« Reply #3 on: August 19, 2008, 08:55:00 am »
Thanks for the suggestions.  I will see what I can do.
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ChadTower

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Re: Help - DMD Quits Working
« Reply #4 on: August 19, 2008, 12:39:50 pm »
Quote from: pinballjim on August 19, 2008, 12:13:35 pm
No need to rebuild the high voltage section just yet.  Focus on the connectors.


I say do it anyway.  It can't do anything but make the DMD less likely to be trashed by an HV failure.
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