Mine was a DIY job.
somehow the fuse blew though I don't know why since that fuse is meant to protect the chip from reverse polarity(which definitely didn't happen) or serious battery failure which I doubt. Nothing was touching the battery leads. same for pretty much any lead. Still blew.
the worst thing is that the fuse I need is either shipping from the US so costs about 30 bucks to get ONE fuse. one place sells by 10 but only ships to the UK. all the other places won't ship untill a minimum of 100/1000.
Guess il have to suck it up and do that frankenstein john from evolv mentioned which is essentially taking one of those mini car fuses and soldering it with lead onto the board.

awesome haha