Hi
Had a similar problem. Building K2 5669, check U4 carefully, cold
solder joints etc. Check your Q in the center front of the board. I
am not at my hamshack but will look tomorrow which Q could be the
problem. In my case it was U4. good luck Hank WA9QJH
On 24, Sep 2006, at 19:49, Jim Brassell wrote:
Hello.
I am building K2 #5731 and I have run into two problems. The first,
and most serious, is in VCO alignment. When moving L30, the voltage
at the left end of R30 does not change from 8.03vdc. I have been
through the entire range of L30, very carefully, with no change. I
pulled out T5 and rewound it. It is as nearly perfect as I can get
it. When I measure vdc on T5, I see approximately 0.01vdc on 1 and 2
and 2.65 on 3 and 4. I checked voltages on U4 and U6 and they are in
the range of the table in the back of the manual. I've checked all
the components installed and the soldering. This is my second K2 and
I have been a lot more careful. I'm stumped. Anybody got any ideas.
The second thing is that parts of the mode indicator on the display
have become intermittent. Any ideas on that?
Thanks.
Jim, K4ZMV
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