thank you, but i don't know what to replace. i'm not sure what would make the amps jump off the scale and nothing looks damaged. i did run it for over an hour and there is no fan on this supply and it did get very hot. a student could have done something screwy with it(when i got it the banana screw terminal colors were all in the wrong place) to damage it but then i don't know what i would have to replace. all of the parts are through hole, so i can replace any part easily, but if i don't know what to replace, i think it might be easier to get a new digital one.