(Topic ID: 24883)

Gottlieb System 3 Sound boards troubleshoot

By BOBCADE

11 years ago


Topic Heartbeat

Topic Stats

  • 68 posts
  • 11 Pinsiders participating
  • Latest reply 7 years ago by Bay78
  • Topic is favorited by 16 Pinsiders

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#48 11 years ago

One other thing you may try: replacing the LM7809 voltage regulator on the Aux Sound Board. The pinrepair guide had this as a solution for the constant hum. Even though the VR tested good, replacing it fixed the problem.

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