Greg,
I have had that happen twice.... on a 1000mp.
Last time, I replaced the IC with a Max232 device... but the foil vias around that area are getting pretty ratty.
A long time ago, I read somewhere that this was a problem with this series Yaesu.
The rig has been OK after the last fix.
Good luck...
Mike
Please use ne4s@iham.us as my address.
From: "gregpotter@charter.net" <gregpotter@charter.net>
To: secc: contesting.com <secc@contesting.com>
Sent: Tuesday, January 17, 2012 7:40 AM
Subject: [SECC] Dead CAT
I have discovered the root cause of my Rig/PC issues in the NAQP. It appears my RS232 CAT connection on the Mark V blew out. UGH! Perhaps some RF in the shack. I don't even own an amplifier and I was running 100W, but that seems to be the only conclusion I can come to as the root cause (unless the rig is just getting old like the rest of us. :) )
The good news is the radio still works great.
73 de Greg NM2L
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