[TenTec] Omni 7 shuts down on overcurrent on 10-12 meters only

[Stuart Rohre]

If Ten Tec said to check diodes, that is something you can do if you 
have a diode test function on your DVM, or even if you only have a VOM 
with resistance scales.  A good diode checks high resistance in one 
direction with VOM X 100 ohms scale, and low resistance in the forward 
direction, (opposite polarity of probes compared to the first 
measurement above.)

On a DVM it is even easier on the diode symbol switch position, you 
simply look for 0.3 volts nominal for Germanium diodes, and 0.6 volts 
nominal for Silicon.  Likely all the diodes in modern rigs will be 
silicon.  The diodes you would be concerned about would be in the RF 
board area for amplifiers and perhaps the ALC section and the SWR 
measurement section, if that area includes protective circuits for the 
finals.  An open diode there could shut things down, and certainly one 
that is shorted when power is high enough.

-Stuart Rohre
K5KVH