05-24-2026, 12:02 PM
To Mr/Fixr's remark.
When you troubleshoot a problem like this one, you should remove all non-native devices. Including bluetooth.
You need to confirm it is the radio that does that. Bluetooth is an extra variable.
I was not aware you had it (maybe I missed it).
Where and how is it connected? Can you sketch the exact circuit mod? (the switch, the jack, everything that connects the BT to the radio). I imagine it is at the circuitry involving vol. ctl, and this is close to the detector. Any subtle mistake might affect it.
The diodes (no, I do not think you need to do it, as the tube has been swapped) go the same way as the diodes of the tube: A to A, K to K.
And you only need one, as the two of the 6H6 are paralllelled. You can leave the filament circuit alone, it is not doing anything.
Again, at this point this is unnecessary.
John
He said he swapped the 2nd detector tube, else I would also say "swap it".
When you troubleshoot a problem like this one, you should remove all non-native devices. Including bluetooth.
You need to confirm it is the radio that does that. Bluetooth is an extra variable.
I was not aware you had it (maybe I missed it).
Where and how is it connected? Can you sketch the exact circuit mod? (the switch, the jack, everything that connects the BT to the radio). I imagine it is at the circuitry involving vol. ctl, and this is close to the detector. Any subtle mistake might affect it.
The diodes (no, I do not think you need to do it, as the tube has been swapped) go the same way as the diodes of the tube: A to A, K to K.
And you only need one, as the two of the 6H6 are paralllelled. You can leave the filament circuit alone, it is not doing anything.
Again, at this point this is unnecessary.
John
He said he swapped the 2nd detector tube, else I would also say "swap it".
People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
