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
>From: "B. Lee Cornwell" <firstname.lastname@example.org>
>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
MSN Photos is the easiest way to share and print your photos: