Author Topic: Bally Solenoid Driver Repair  (Read 12896 times)

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Offline Pinball Fixers

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Re: Bally Solenoid Driver Repair
« Reply #15 on: October 18, 2008, 10:50:25 PM »

It is actually DAMAGING the displays, and if you had an Altec MPU board in the game... That could be nasty...


Just a quick point about the Alltek (yes, Nino misspelled it :lol) MPU board: It has a voltage clamp built into the board, so that if the power supply has a problem in the +5 Volt section, the board will be protected, and not boot up.

You will see a Red LED and a Green LED on the lower left hand side of the board - the Green LED means that voltage is OK, and the Red LED means over or under voltage.