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(Topic ID: 194024)

SOLVED: TECH DE Star Wars "0 Balls Missing"???


By RDReynolds

3 years ago



Topic Stats

  • 10 posts
  • 6 Pinsiders participating
  • Latest reply 3 years ago by Sonic
  • No one calls this topic a favorite

You

Linked Games

#1 3 years ago

My DESW has picked up a glitch...I power up, it does a ball search. DMD goes blank for a while. Eventually it will come up and you get the push start message. Upon hitting start it gives a "0 Balls Missing" and never pops a ball into the shooter lane. I figure it has to be an issue with the out hole switch, but it tests fine in diagnostics?

Any assistance would be appreciated!

#2 3 years ago

Probably not the outhole but more likely the trough switches over by the plunger.

#3 3 years ago

Page 21 in your manual describes a Tech Alert. Any info about switches there?

#4 3 years ago

Does a Tech Chart help?
http://www.pinballrebel.com/pinball/cards/tech_charts.htm

Peter
www.inkochnito.nl

#5 3 years ago

Actually, turns out it was a short on the (non-existent) knocker on my machine! Very weird!

#6 3 years ago
Quoted from RDReynolds:

Actually, turns out it was a short on the (non-existent) knocker on my machine! Very weird!

How did you figure this out? I can't imagine how that would cause this error.

#7 3 years ago
Quoted from fattdirk:

How did you figure this out? I can't imagine how that would cause this error.

We figured out what was happening is the out hole coil wasn't firing, then noticed other coils also weren't. If the out hole coil doesn't fire, the balls don't wind up in proper locations in the trough.

Found one of the fuses was blowing. Tracked those down literally wire by wire to the Popcorn board. Just kept eliminating wires and seeing if fuse would blow. It just kept blowing. The absolute last one we checked was the knocker. Took that out of the equation, boom, fuse didn't blow, life was grand. I mean, we blew like 10 fuses figuring it out, but you can't make an omelette without breaking a few eggs.

What's funny is there has never been a knocker on that machine since I got it. So had to be a short in the wiring.

#8 3 years ago

Should add Sonic on here was the guru and my hero who figured this all out!

#9 3 years ago

F6 on the PS board was blowing upon power up. I simply traced that back through to the PPB and found it was the 32V supply to some flashers as well as 4 coils (drops, outhole, trough & knocker)....once I realized the PS and PPB were good and the problem was coming from the PF or cabinet - I merely removed each wire from J2 on the PPB to see which was causing the problem - the odd thing here is when RD bought the pin it did NOT have a knocker BUT in the cabinet the two coil wires were crimp wire-nutted together (which didn't make sense to me) but it was that way from day 1 and the game had played for months & months prior...I saw this hack from the 1st second we started - but thought well it's always been this way - shouldn't be the problem, but sure enough I cut the wire nut off and low and behold no more fuses blowing, solenoids were firing again (except the knocker, which as already mentioned, not there) and a bank of 4 flashers that RD indicated had never worked - were working again (kind of, but that was a CPU-fried MOSFET problem I still have to get to)...in the end a few hours of schematics review and one swift movement of my dikes and all was good again.

#10 3 years ago

Don't overlook Peter's gift here...those tech charts are f'n brilliant to have...great job Peter - I hadn't seen these before!

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