In this video I repaired the TCXO inside my Keithley 775A which I did a teardown with last time. The TCXO was way out of spec and I was able to bring it back in spec via a a few added trimmer capacitors. http://www.kerrywong.com/2018/06/01/k.... And a teardown and repair of the OCXO inside my HP5350B can be found here: http://www.kerrywong.com/2014/07/01/h...