Hi! It's my first post here, but I've been an MD user and MDC forum reader for years :-) What happened to me, was that, all of a sudden, my ECM-719 mic just lost one channel. When plugged in, the rec level shows nothing on the left channel, however, when the recording is played back, you can hear a noticeable hum on the left channel. I didn't drop the mic, nor pulled the wire or anything. No chances of sudden mechanical damage in the meantime. The MD recorder (MZ-RH10) was double checked with another mic and it just works fine. I haven't got much hope for repair, as it probably would be as expensive as a new mic. But before I throw it away, have you heard of such a failure or a possible fix for that? Thanks! dzerry