Hello all. I just got a non-functioning SWR WorkingMan's 12 100-Watt 1x12" Combo for free. It will not turn on when plugged in. The fuse is missing, and it says it's a 3A SloBlo... Is that what could be wrong with it? I found a site that's selling them for $1.69/each. I have very little electronics experience... Should I just take it to a pro? EDIT: Please note this is the discontinued WorkingMan's... NOT today's WorkingPro... The "head" section of the amp is angled down, and there's a little platform kind of thing. Any and all suggestions would be greatly appreciated!!!