Emerson 637A Restoration

[Crist Rigott]

I didn't get much done today. Did figure out the filament string. It'll work great!

I did manage to label all the resistors, capacitors, pots, inductors, and coils according to the schematics from Riders V6.

It seems that this might not be a 120095-B chassis. There are no markings to tell me what it is. Looking further in Riders V6, I did see another schematic for a 120138-B chassis that does show the correct speaker field and voice coil connector along with some added and subtracted resistors and capacitors that were in my chassis but not on the 120095-B schematic. However, the 120138-B schematic does use a 12BH7 instead of a 12SN7GT and uses a 12AT7 instead of a 12AU7. I did use the combination of the 2 schematics to label the components. I could not find a schematic that really matches my chassis.

Yesterday I drove to Mouser (an easy 20 minute drive) and picked up my E-Caps and some Micas. I had everything else here.

Tomorrow I'll start cleaning the chassis and working on the power supply sections.

Yeah, I pulled the Tuner to figure out what was with that resistor and discovered a Candohm resistor inside the tuner. More on that when I restore the tuner.