Dont know what happened, not too knowledgable with amps. Any help is appreciated.

So my BM cut out after less than a year with it. I was playing it, and it started to get this hum/buzz in it that was pretty subtle at first. It started to louder and was accentuated with my picking pattern. Finally, within the span of a minute, the hum grew almost full volume, my bedroom lights dimmed abruptly, and the amp died. waited a while, then tried to see if it would turn on...no go. I want an idea of what it is before i take it in to get fixed. Is this something that could be due to faulty construction/parts? pretty bummed this happened in such a short span of time owning the amp when i take good care of the amp.

thanks.