06-30-2018, 12:22 PM
Bad solder joints can break/make connection but probably 99.999% will clear up at any movement, prodding, etc. You've juggled this thing around far to much to have a bad joint issue.
With only the 220K connected to pin 6, voltage drop will be within socket.
With only the 220K connected to pin 6, voltage drop will be within socket.
Tom