Hewlett Packard HP 8156A Optical Attenuator With Option 101 - AS IS For Parts 155516016948 the meter backlight turns red

the meter backlight turns red

Operational Module Serial No: 20519096

This Gas Regulator Gauge has been pulled from a functional environment

Manufacturer Grass Valley Model Number FIO-1901-RR SKU 19-74294 Ref 23-106418

Hewlett Packard HP 8156A Optical Attenuator With Option 101 - AS IS For Parts 155516016948 the meter backlight turns redThis item is sold AS IS. No returns or exchanges are accepted. Condition For parts or not working Description Unit powers on, and the self test fail and error fail 0040 on the display once started. When re tested, found this passes most of the time with no error, but it did fail once with the same error on the display. For this reason, we are selling the unit AS IS for parts repair as a non working or incomplete unit. We have not tested inspected any