Hi guys...

   My Father-in-law just brung me a beat up old Lincoln 180 stick welder with a 20% duty cycle... i hooked it into the 220 in the garage and it welded fine for about 2 minutes and quit.... now I get no hum, no juice at the stick...no nothin.....    I don't think it's the duty cycle ..cause I waited an hour now and still nothing....  I checked fuses and stuck a meter to the curcuit and it's full current to the power cord.... but the dang thang wont spark a lick.....   I was running it at 100 amps and welding a lawnmower blade when it happened..... it just quit....       y'all figger  I fried his lil welder?   Is there any way I can check it to know for sure?   (Besides turning it on and 'splainin it to him "...it don't work no mo" that is...?)   I'd at least like to be able to tell him what went wrong.....   should I pull the cover and check the transformer?
...I'm guessing this thing has no internal fuse or circuit breaker....   (and "NO" I didn't torque the amperage while welding)   ....but, i am baffled....    is like it just gave up the ghost.....
Thanks fellas....any clue would be helpful
-Doug