[Elecraft] KX3 2 meter module transmit problems?

[ejkkjh at gmail.com]

Only got one response on this, still having same problem, rechecked everything including the shield placement.
Thanks  73
Emory  WM3M

From: ejkkjh at gmail.com 
Sent: Sunday, September 14, 2014 8:46 AM
To: elecraft at mailman.qth.net 
Subject: KX3 2 meter module transmit problems?

KX3 2 meter module transmit problems, not sure what to try next?
When I key mic in 2 meters, display dims and KX3 beeps twice, no output, red led lights.  When I push xmit button KX3 locks up, only way to recover is turn off power supply?  
Receive works great, no problems at all.
HF works fine, full output on transmit.
I switched out everything from SMA antenna connector, different cables, 3 different 2 meter antennas.  Only cables connected to KX3, mic, power supply, and antenna.
Tried different power supply.  I have had trouble with the internal 2 meter antenna, mini coax cables, but checked them, they look ok and connected.  This just happened when I tried to use it for VHF contest yesterday, 2 meter transmit was ok before this.
Any help would be appreciated.  73  Thanks
Emory  WM3M