Just to recap... the 55-gallon is one of those chain store setups... with the two plastic lids where you flip the front up for feeding, etc.
The back half of the lid has a clear plastic plate where the light ftrom the hood (sitting on the lid) shines through that clear plastic. When cleaning once upon a day, I caused several cracks in the clear plastic, MAJOR cracks.
I fill my tanks to about 1/4" below the top lip, as I like the water line to be slightly above where the black trim starts. I guess the swishing about of the water as well as evaporation caused moisture to go through the cracks in the plastic lid, and the moisture works into the ballast inside the lighting hood.
I noticed issues once upon a time where the particular light hood would not turn ON immediately as the one to the right of it did... sometimes it would seem to need time to "heat up". There was never any issues prior other than that... then the day of my post I had performed maintenance, set everything back up, and went to move some decor around and got the buzz-zz-zz-zz-ing feeling from the electrical current.
Trial and error afterward found the heater was intact but as soon as the concerned lighting hood was removed, all problems were gone, just like that. I guess I should have suspected the lighting hood due to it's abnormal performance (delay lighting up) which was ongoing for months.
Oh well... I am still alive.
