Good day, all. ?My VM transmitter has been working well until today. ?I tried to adjust grid current using the Gang Tuning control. ?I turned the knob about half way and the control locked up. ?I could not turn the control in either direction. ?I loosened the shaft coupler between the front and middle tuning capacitor and the front capacitor turns freely. ?The middle tuning capacitor would not budge. ?I loosened the shaft coupler between the middle and rear capacitor and the rear capacitor moves freely. ?I am afraid to apply too much force to the middle capacitor shaft. ?Has anyone run into this problem and any recommendations on freeing up the capacitor. ?When the problem is solved, I will need to re-align the position of each tuning capacitor. ?As best I recall, all sections were at approximately the same location ( all fully meshed).
Thanks for any comments.
73, Bob, KN4HH?
Bob Watson