![Embarassed :oops:](./images/smilies/icon_redface.gif)
I use the schematic we can find here : http://vintagefenderamprepair.com/wp-co ... ematic.jpg
For the normal channel, each tube use (410-270)/100000=1.4ma , so i need a 410/0.0028=150k/2w resistor from D to ground.
For the vibrato channel:
The first stage use (460-280)/220000=0.8ma.
The second stage use (460-390)/10000000=0.07ma and i don't know how many current there is across the OPT (call it Iopt).
So i need a 460/(0.0008+0.00007+Iopt) resistor from B to ground.
Who knows the voltage on the 100k between the OPT and B to calculate Iopt ?
Are you ok with me
![Confused :?](./images/smilies/icon_confused.gif)
Kind regards