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
_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
|