ptrickamp222
New member
- Joined
- Aug 22, 2007
- Messages
- 879
I just got my 71 and the bias is way to cold on all sets of Mullards. Now the bias pot feels bad! Where can I get a bias pot and what do I change the 47K bias resistor to get the right bias???? Plate voltage is 417Vdc. and the bias at max was 25mA. Now it dropped and the pot is bad...........Or do I get a newer pot say 50K and where to get, What to Do!!!!!!:wah