Hi Lee....I too had power output problems when I bought a used Corsair II
off of eBay (of course, advertised as working perfectly -- but then that's
another eBay story!)....finally discovered the problem: Several components
in the low-level RF driver stages had never been soldered to the circuit
board....I mean, never!!!! I guess I had the Monday-morning built rig!
Anyway, soldered driver transistors and other components to board now have
tons of drive and output!!
By-the-way, I did everything you have already done but somehow kept
overlooking the problem on the driver board.......Old age, I guess...HI!
Just my experience........you've indicated you already checked that board so
what I would do now is make an RF sniffing tool (oscilloscope would be great
here!) and start following the signal from the beginning to end....good
luck. 73..../k6sdw
From: "B. Lee Cornwell" <leec@ptd.net>
Good Morning to all - I've been having some difficulty with an intermittent
power output problem on my Corsair II. At times the power output (on SSB
only) drops to half or less of normal output, as seen on the scope and lack
of ALC led lighting. CW or tune position is full output with no problems.
Advancing the drive control seems to have little effect, other than to
flat-top when full out put comes back.
I have removed EVERY connection plug and cleaned with De-oxit and Q-tip and
re-seated. I have removed low lever driver board and re-soldered every
connection. What next ?? Any ideas where to look next ? I suspect a problem
on the audio board, but because of it's intermittent nature it is very
difficult to "pin down". Thanks in advance - Lee K2BLC
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