(Topic ID: 260074)

meteor mpu led stays on w/o flashes..


By topkat

4 months ago



Topic Stats

  • 11 posts
  • 3 Pinsiders participating
  • Latest reply 4 months ago by topkat
  • No one calls this topic a favorite

You

Linked Games

  • Meteor Stern Electronics, 1979

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#4 4 months ago

If it boots on the bench and not in the game you probably have a connector problem. MPU TP5 should be 5 volts. MPU TP2 should be 12 volts.

#7 4 months ago

MPU TP5 looks low. Check driver board TP1 and TP3 - should be 5 volts. If good there check your connectors from driver board to MPU.

#10 4 months ago

The MPU won't boot with only 3.4 volts at TP5. The 5 volts comes from the driver board J3 pins 18 and 19. They go to the MPU to J4 pins 16 and 17. Look for corrosion or dirt on those pins.

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