Restoring a Stern Big Game. The game was completely dead. I put in a new rectifier board and it's generating all the proper voltages. I then went to the solenoid driver board. When I applied power I only get the proper high voltages at TP 2 and TP 4. No 5v or 12v at any of the other test points. I replaced the capacitors on the solenoid driver and did the suggested grounding modification on the solenoid driver to include running a trace from TP1 to TP3. Still no voltages other than proper high voltage readings. What should I try next, if anything, before rewiring J3 on the solenoid driver board? How can I check that the proper voltages are getting to the solenoid driver board?

#2 3 years ago

ZAC

zacaj

RPC

Rochester, NY

11y 158K 10,387 85 122 1

If you're not getting 12V at TP5, then voltage isn't getting to the board from J3-12. The 5V at TP1 is generated from that, so you won't see anything without it.

#3 3 years ago

DAN

shado01

Pinside member

Spokane, WA

18y 48,400 149 5 8

OK thanks, I'll check the connector.

#4 3 years ago

DAD

pb456

Pinside+ Frequent

Anchorage, AK

7y 85,300 1,136 8

Horning in a bit - can someone shoot me a pic of J3 (of the solenoid driver board) with wire colors? Sure would be easier than trying to trace each wire down (buddy repinned improperly)....

#5 3 years ago

BTE

RocketFromTombs

Pinside member

Schoolcraft, MI

8y 34,300 171

Quoted from pb456:
Horning in a bit - can someone shoot me a pic of J3 (of the solenoid driver board) with wire colors? Sure would be easier than trying to trace each wire down (buddy repinned improperly)....

https://pinside.com/pinball/forum/topic/stern-flight-2k#post-5787021

#6 3 years ago

DAD

pb456

Pinside+ Frequent

Anchorage, AK

7y 85,300 1,136 8

Quoted from RocketFromTombs:
https://pinside.com/pinball/forum/topic/stern-flight-2k#post-5787021

Looks to me like that connector is to the rectifier board, not the solenoid/driver board AS-2518-16, J3. I'll keep looking, but thank you!

#7 3 years ago

MAG

Completist

Pinside member

8y 91,850 1,436

From my F2K

B3362EB1-5661-41CA-A341-134420101B6C (resized).jpeg

#8 3 years ago

DAD

pb456

Pinside+ Frequent

Anchorage, AK

7y 85,300 1,136 8

Quoted from Completist:
From my F2K
[quoted image]

That's the stuff! Thank you.

#9 3 years ago

DAN

shado01

Pinside member

Spokane, WA

18y 48,400 149 5 8

OK, back to the original question. I replaced J3 AND put in a new Alltrek solenoid driver board and I still don't get any 5v or 12v on the solenoid driver board. Again my rectifier board is new, it puts out all the correct voltages and I replaced ALL the rectifier connectors. The Alltek pamphlet that came with the solenoid driver board says that this problem (no 5 v or 12v) could be caused by a corroded/faulty MPU. What exactly am I looking for on the MPU that would cause this problem?

#10 3 years ago

ZAC

zacaj

RPC

Rochester, NY

11y 158K 10,387 85 122 1

First thing, I'd just unplug the MPU (at least J4, where the power comes in)
If you still don't have 12V at the test points, I'd pull J3 and check voltage directly on the pins of the connector. If not, maybe a broken wire or bad pin somewhere

2 weeks later

#11 3 years ago

DAD

pb456

Pinside+ Frequent

Anchorage, AK

7y 85,300 1,136 8

OP
Quoted from shado01:
OK, back to the original question. I replaced J3 AND put in a new Alltrek solenoid driver board and I still don't get any 5v or 12v on the solenoid driver board. Again my rectifier board is new, it puts out all the correct voltages and I replaced ALL the rectifier connectors. The Alltek pamphlet that came with the solenoid driver board says that this problem (no 5 v or 12v) could be caused by a corroded/faulty MPU. What exactly am I looking for on the MPU that would cause this problem?

I'd also replace/repin ALL the connectors going into the solenoid board. Be slow and methodical, one pin at a time. Have you tested the bridge rectifiers on this new board?

shado01

Post last edited 3 years ago: “Tagged poster.”

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