[CQ-Contest] MFJ 434 WOES

[KI9A at aol.com]

Hmmm...I just changed my 434 jumpers from Yaesu to ICOM, now the dang thing  
won't key the rig. Checked all jumpers, including the mic voltage jumpers. 
After  playing with the thing, the manual says not to touch the HD1 jumpers, they 
are  factory set to 7 & 8. Newsflash, mine were set on 1 & 2, and worked fine 
 with the Yaesu. Now it will key the ICOM, but won't release the vox.  If I  
change them to 7/8, there is very weak audio, and no keying of the rig.
 
Any ideas?
 
73-Chuck KI9A