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(Topic ID: 231297)

Black Hole locks up

By Grangeomatic

5 years ago



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#6 5 years ago
 
TOX

ChrisHibler

Chris' Pinball Repair

US Chesterfield, MO

12y 120K 9,990 46

The MPU is locking up and no longer executing when this happens.

Considerations...
...any AMI chips, especially the 5101
...corrosion

When the symptom manifests feel each chip on the MPU to see if one is noticeably hotter. The 6632s run hot normally but if one fails it might be a bit hotter than the others.

That’s all I’ve got for you now. This will be a tough one.
—
Chris Hibler - CARGPB #31
Http://chrishiblerpinball.com/contact
http://www.PinWiki.com/ - The new place for pinball repair info

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#8 5 years ago
 
TOX

ChrisHibler

Chris' Pinball Repair

US Chesterfield, MO

12y 120K 9,990 46

Your Gen1 MPU will work in BH once you've updated it to the single ROM configuration. It should have U2/U3 soldered in.

Post a pic of the corroded area. I'll give you an assessment.
--
Chris Hibler - CARGPB #31
http://www.ChrisHiblerPinball.com/Contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info

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