Tod, look for a short in the +12 circuit to ground. The swollen batteries suggests they were feeding lots of current into a dead short for a long time.
Open the unit and do the resistance checks at the top right column on page 54 of your manual. If those checks disclose a short, follow the PCB traces back to the power switch. You may find that one carrying +12 has burned open from the heat of the batteries. After you repair the short, a burned trace can be repaired by cleaning the ends on opposite sides of the break and soldering a short thin wire across the gap. Often batteries cannot supply enough current to actually burn a trace open, but an external supply can. Do the resistance checks to see if the +12 V line is shorted before leaving power applied! There are additional troubleshooting hints in Appendix E1 of your manual. The first section deals with the symptoms you describe. If there's no short on the +12V line, do the voltage checks on page E5 and E6 to see where power is missing. Ron AC7AC _______________________________________________ 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
