Some stoopid GOBI-worshiper made a wiring boo-boo that resulted in some electronics failures. The ST6000+ control head is now non-operational. I did exploratory surgery and found vaporized surface-mount type device and the attendant smell. Time to close up and give the family the bad news. The case, buttons and LCD display are OK so if anyone can use if for parts drop me a line at nwigen -- comcastdotnet and it's yours for the postage.