06-29-2019, 08:05 PM
Hold the phone, folks. (And welcome here vacuum, by the way.) ![Icon_smile Icon_smile](https://philcoradio.com/phorum/images/smilies/icon_smile.gif)
You say that you have to tap on the 75 tube to restore proper operation. The 75 tube is the second detector and 1st audio tube; it has nothing to do with the oscillator circuit.
A possible fix for your 75: unsolder the solder which is on top of its grid cap, then apply fresh solder. This sometimes fixes 75 tubes with intermittent issues as yours appears to have.
![Icon_smile Icon_smile](https://philcoradio.com/phorum/images/smilies/icon_smile.gif)
You say that you have to tap on the 75 tube to restore proper operation. The 75 tube is the second detector and 1st audio tube; it has nothing to do with the oscillator circuit.
A possible fix for your 75: unsolder the solder which is on top of its grid cap, then apply fresh solder. This sometimes fixes 75 tubes with intermittent issues as yours appears to have.
--
Ron Ramirez
Ferdinand IN