Re: QCX 40m Version 4 new build problem
James Daldry W4JED
IC10A is a zero-gain voltage follower. Pins 1, 2, and 3 should be at exactly the same voltage. Anything else means (a) you have a bad IC10 (HIGHLY unlikely) or (b) there is no connection between pins 1 and 2. Check it on the top side with an ohmmeter. Then resolder pins 1 and 2 anyway. Maybe cover the 2 with a single "blob" of solder.
On 12/18/19 1:21 PM, Wesley Matthews wrote: