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Weird output voltage errors in logs we started getting over the last couple of months. We've been running this unit over a year.

It's a WS-12-250-DC unit. Here is what we have started seeing in the logs:
...
May 19 10:53:40 switch[770]: Power Supply Output Voltage is out of range (51.1V)
May 19 11:00:04 switch[770]: Power Supply Output Voltage is out of range (51.1V)
May 19 11:00:50 switch[770]: Power Supply Output Voltage is out of range (51.2V)
May 19 11:01:19 switch[770]: Power Supply Output Voltage is out of range (51.1V)
May 19 11:01:58 switch[770]: Power Supply Output Voltage is out of range (51.2V)
May 19 11:02:24 switch[770]: Power Supply Output Voltage is out of range (51.2V)
May 19 11:02:53 switch[770]: Power Supply Output Voltage is out of range (51.2V)
...
Here's the power data:
Board 48V - 49.8
Board 24V - 24.6
Board 3V - 3.3
Power Supply Input Voltage - 25.59 V
Power Supply Input Current - 5.68 A
Power Supply Output Voltage - 51.2 V

Other unit info:
Firmware Version - 1.4.6
Board Rev - F
Power Supply Firmware Version - 46
Power Supply Board Rev - B

Please upgrade the firmware to v1.5.0rc4