02-20-2021, 05:31 PM
The schematic is here: http://www.nostalgiaair.org/resources/449/M0013449.htm
16A is the Power On pushbutton. When the button is pressed the switch is activated and supplies power to the transformer. We don't recommend applying power before testing the power transformer windings with an ohmmeter and replacing the power supply filter electrolytic capacitors. If you ignore doing this you run the risk of damaging other components like tubes and coils. Paper tubular capacitors should also be replaced.
The schematic shows three wires to the loop antenna, external aerial and wires to the phono pickup and motor in addition to what looks like a socket for an external speaker. You'll have to trace the individual wires back in the chassis where they connect then find those points in the schematic. I noticed some are color coded.
16A is the Power On pushbutton. When the button is pressed the switch is activated and supplies power to the transformer. We don't recommend applying power before testing the power transformer windings with an ohmmeter and replacing the power supply filter electrolytic capacitors. If you ignore doing this you run the risk of damaging other components like tubes and coils. Paper tubular capacitors should also be replaced.
The schematic shows three wires to the loop antenna, external aerial and wires to the phono pickup and motor in addition to what looks like a socket for an external speaker. You'll have to trace the individual wires back in the chassis where they connect then find those points in the schematic. I noticed some are color coded.
