power inverter fried?

[boXCar JiggY]

I have a power inverter in my ice house to to take 120 to 12v, i've used it for ten years , Id hook it up to a 12 volt battery an the plug in 110 fans an works like a charm. today as I was getting ready fro ice season, I had it running for a while an all of a sudden POP gose the fuse. hmmmmmm went an got several more 40 amp fuse as it take such an could even insert them before going pop, yes I would disconnect the unitt insert fuse , hook up to batt. an pop.whent thru 5 fuses, an cant figure out whats going wrong. ive usedthis for years without incident an now it pops every fuse i put in. is the unit fried?

[Whoaru99]

If it's blowing the fuse with nothing connected (and it's connected to the battery the right way) yeah, it's probably fried. Whether or not it's economically feasible to repair may be the tougher question.

[boXCar JiggY]

Yeah, I didnot have anything hooked up to the unit, an was hooked up properley. I guesse ten years aint bad for a hundy. Thanks