HELP! My 2002 Lesiure Bay Spa Keeps blowing the 1/2 amp slow blow fuse that was soldered to the board. Originally i found a dead mouse caught inside the bos wedged between the hot and ground...i thought that was the prob. I had an electrician solder a fuse holder in place of the soldered fuse, so one could easily be changed if needed. The hot tub powers up BRIEFLY and then you can hear the fuse "pop". I unhooked the heater, light, and pump...still it blew. Any suggestions?