I bought a Mac 352 amp years ago. It was damaged in shipment. UPS paid for the repairs.
I noticed quite some time ago that the lights on the right screen were not on. Or not working.
No big deal. As long as the amp is working I'm happy
Today I turned my system on to listen to tunes. GUESS!!! What!!! The lights on the amp are on and working!!
How about that!! I didn't do anything to make them come on. My lucky day!!