Not sure that it " senses" v drop-

Timer chip begins cycle @ ( threshold voltage achieved), closes NO relay after delay. Relay remains closed until voltage drops below threshold, @ which point it opens.

But if voltage never goes below threshold, relay remains closed, ballast remains powered, - no reset.

If yer getting brownouts, you could def be hitting points where voltage is low enough to break arc, but not low enough to release relay. Relay would seem to have failed.

But again, IANAEE.

Wish I could offer more than speculation.
rhizome Reviewed by rhizome on . Ballast Overheated My Cannalight 600 watt ballast cut out this morning.I pluged it out let it cool down and it started up again. The temp in the room at the ballast stays at about 80f(cant get it any lower). Im a bit worried about this now being a fire hazard,its always been pretty warm to the touch,It has a built in fuse which screws into the side of it and another one in the plug,plus its pluged into a surge protector. Its about a year old,how often should they be replaced? Has anyone ever heard of this Rating: 5