I've been repairing and selling the old 206 and 410 breadboxes and cleaning up. Every 206 I've fixed has had the same issue, a tantalum capacitor shorts and burns a trace on the board. Replace the cap, repair the trace and it's up and running again. 410's seem to be a mixed bag as far as what makes them fail, but aside from one that took a lightning hit, I've always been able to get them going again. Once I get the warning light out, check all the ports, and it's functional again, I always rebuild the power supply and let it run for a week or two to make sure it's going to hang in, if it passes that test it's off to ebay. People that have them don't like to give them up.
