Mike, You mentioned that Q1 was getting hot - it does not normally. The only thing that I can spot on the schematic for possibilities is D4 - if it were reversed, it would place 5 volts on the gate of Q1 and make it conduct heavily. The anode (unmarked end) of D4 should be closest to the edge of the board.
73, Don W3FPR > -----Original Message----- > > Having just completed the KIO2 module, I discovered that the > onboard oscillator doesn't. I've isolated it, had it apart twice, > checked all components and pcb lands, replaced the FET even > though my analyser said it was OK. The FET is running very hot, > perhaps 50 deg C. If I inject the required negative voltage into > pin 8 of the IC, all voltages come up correct on the pins, so it > doesn't seem to be anything to do with that. I'm just about to > knock up a crystal checker, but while I do, has anyone else had > this problem? > > 73 de Mike GW4IQP > G-QRP, K2 no 4185 > _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
