by Roy Mottram Wed Apr 15, 2015 1:45 pm
I check my emails hourly, I check this forum maybe once or twice a week, so support is always faster via email,
but here's the answer I sent via email this morning . . . .
yes, sorry, I should have sent the info with the chassis (I usually do when I have to make a substitution)
Note that the windings come out in a circular pattern, it is essential that you use the correct windings, even though some of them have the same colors.
Use ONE pair of the white/yellow to go to the HV inputs on the PCB.
Use ONE pair of the blue/green to go to the 6v input on the PCB (this is for the rectifier tube filaments)
Don't use the other pairs, just cut them off and insulate them.
Tie both RED wires together and run to one side of the AC input connector.
Tie both BLACK wires together and run to one side of the fuse.
The PURPLE wire is the shield and goes to AC ground (the lower center connection on the IEC AC input).
You will wind up with around 40vdc more raw B+, and so we may want to change the R23 set resistor from 330K to around 360K
to give 289 vdc B+, either that or add a SMALL heatsink to the TIP50. I can send you either or both parts no problem, just let me know
If you have any questions on the other transformer let me know. You would have either a round AS-0509 toroid (2 sets of 9vac outputs)
or a blue square transformer with 2 sets of 7vac outputs. Those are for the left and right filament regulators