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Electronic Theatre Controls Inc

Express Not Turning On (Bad Power Supply)


Console does not turn on or it randomly will turn off, especially when a load is added such as turning on a little light.

The power supply may also make a hum or high-pitched tone when plugged in or when the console is turned on.

Description/Explanation of Issue

The older power supplies (PS127 and PS168) are the most common to fail. 

They are easily recognized by having a ribbed plastic case.





Replace power supply with current part:

  • PS319 - 8-pin power supply (smaller connector)
  • PS320 - 5-pin power supply (larger connector)
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