(Topic ID: 142490)

Help with Stern Galaxy Please

By dbpbandit

8 years ago


Topic Heartbeat

Topic Stats

  • 11 posts
  • 5 Pinsiders participating
  • Latest reply 8 years ago by hawkmoon
  • Topic is favorited by 3 Pinsiders

You

Linked Games

  • Galaxy Stern Electronics, 1980

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#1 8 years ago

I'm working on a basket case here and I need some help please.

I rebuilt the Rectifier board, everything looks good however I'm getting test voltages that are off.

Test Results:

TP1 = 6.25 VDC (good)
TP2 = 149.1 VDC (to low)
TP3 = 20.4 VDC (to high)
TP4 = 6.7 VAC (to low)
TP5 = 44.6 VDC (to low)

Some of these are off by a lot, any suggestions?

FYI, I am testing voltages on the bench.

Thank you

#3 8 years ago

Update:
So I plugged in my solenoid driver board (now it's just the rectifier and solenoid driver) and I'm still getting basically the same readings. However, TP4 on the driver board has no voltage si I figure something is wrong with the high voltage section. But, the large sand resistor on the rectifier gets really REALLY hot. Why would this be happening? Am I shorted somewhere?

Thanks.

2 weeks later
#7 8 years ago

More help pleas! So I installed a new Rotten-dog power board and a new ultimate MPU but I still can't get it to boot. My voltage at the MPU test point 4 is way to high. I have the +5 so it must just be wired wrong? Can someone give me the pin-out of the J4 connector? Not the board but the cable, I think the previous owner screwed with it. Thanks.

#9 8 years ago

which pins on J4 carries what voltage?

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