04-04-2017, 11:00 PM
Blue to green rectifier heater 5V
Blue to white rectifier heater 6.3V
Grey to grey main amp heaters 6.3V
One red per rectifier anode and black to chassis with a fuse.
Measure the thin blue to all other windings with 2 meg ohm range. You should get more than 2 meg. If so it should go to the chassis.
If you can try all the AC voltages again with a moving coil meter. All the rest of the voltages will be much lower as they will all be caused by DVM confusion. Modern volt meters are too sensitive for this sort of work.
An AVO 7 would be best if you have got access to one.
Blue to white rectifier heater 6.3V
Grey to grey main amp heaters 6.3V
One red per rectifier anode and black to chassis with a fuse.
Measure the thin blue to all other windings with 2 meg ohm range. You should get more than 2 meg. If so it should go to the chassis.
If you can try all the AC voltages again with a moving coil meter. All the rest of the voltages will be much lower as they will all be caused by DVM confusion. Modern volt meters are too sensitive for this sort of work.
An AVO 7 would be best if you have got access to one.
