(Topic ID: 258868)

Bally/Stern mpu power?


By Nihonmasa

45 days ago



Topic Stats

  • 7 posts
  • 3 Pinsiders participating
  • Latest reply 44 days ago by oldschoolbob
  • Topic is favorited by 2 Pinsiders

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#1 45 days ago

Hi there,

Have a Stern Lightning that refuses to boot.
When testing, the 5v is generated fine on the power board, but there is no 5v at the MPU.

I have seen in the schematics that this comes from connector J4 on the MPU; can someone lead me to where is the other side of this connector?

Thanks a lot

#2 45 days ago
Quoted from Nihonmasa:

Hi there,
Have a Stern Lightning that refuses to boot.
When testing, the 5v is generated fine on the power board, but there is no 5v at the MPU.
I have seen in the schematics that this comes from connector J4 on the MPU; can someone lead me to where is the other side of this connector?
Thanks a lot

Probably J3-14 on the driver board. There should be a page in your schematics that lists every connector pin and what it connects to though.

#3 45 days ago
Quoted from zacaj:

Probably J3-14 on the driver board. There should be a page in your schematics that lists every connector pin and what it connects to though.

Haven't seen it, using the ones from ipdb

No continuity with J3-14

#4 45 days ago

On the driver board the 5 volts comes out at J3 pin 14 and 15.

#5 44 days ago
Quoted from Nihonmasa:

Haven't seen it, using the ones from ipdb

It's in there, last page.

#6 44 days ago

thanks both, solved Cold solder !

Now moving onto solving why all the displays are missing half of the segments

#7 44 days ago

Check connectors

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