Incidently, I did this with an amplifier which was in my car... Kept on blowing fuses so I replaced the fuse with a piece of copper wire to see where the smoke comes from.... Replaced some mosfets and now everything is working perfectly again :) -----Original Message----- From: pic microcontroller discussion list [mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of Peter L. Peres You can always set the limit high and troubleshoot by observing the smoke source if that's your personal style ... Peter -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body