03-18-2020, 10:47 AM
Hi Chris,
http://www.nostalgiaair.org/Resources/584/M0013584.htm
I looked at the 122 schematic from nostalgiaair.org and it appears the electrolytic caps in your chassis have been replaced. The schematic shows 3 caps in the power supply; 30-25-20 mfd 160v. All 3 were originally contained in one tubular part. Your photo shows 4 individual caps so you must be careful to trace out the wires and locate the points they are connected. Then you will have to determine the extra cap and why it is there. The resistor is R17 in the schematic which is a candohm wirewound dropping resistor of 83 ohms in the filament string. You can replace it with a 10 watt 85 - 90 ohm resistor. I usually put the replacement across the terminals of the old one after removing the wire guts. Take your time with replacing the caps because you don't know what the intention of the person who installed them was.
Rod
http://www.nostalgiaair.org/Resources/584/M0013584.htm
I looked at the 122 schematic from nostalgiaair.org and it appears the electrolytic caps in your chassis have been replaced. The schematic shows 3 caps in the power supply; 30-25-20 mfd 160v. All 3 were originally contained in one tubular part. Your photo shows 4 individual caps so you must be careful to trace out the wires and locate the points they are connected. Then you will have to determine the extra cap and why it is there. The resistor is R17 in the schematic which is a candohm wirewound dropping resistor of 83 ohms in the filament string. You can replace it with a 10 watt 85 - 90 ohm resistor. I usually put the replacement across the terminals of the old one after removing the wire guts. Take your time with replacing the caps because you don't know what the intention of the person who installed them was.
Rod
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