05-28-2015, 01:02 PM
5/28/15 Hey Folks. I am the process of restoring my third 53-1750 radio/phonograph. Interestingly (and sadly) someone along the line had cut the power wires to the phonograph motor and spliced the phonograph motor directly into the AC power cord 
. I did a complete recap, replaced a couple of resistors. Three of the original tubes were bad and they were replaced as well (all tubes now test ok). I plugged in the set last night and it came to life - the dial light coming on, all tubes came on and it was receiving radio stations no problems. However, when I flip the selector switch to phonograph, the motor does not run. I checked the resistance across the phonograph motor wire leads and get around 48 ohms. I don't know if this is normal or if it means the motor is cooked. I connected a voltmeter to the phonograph power wire leads coming from the set and my voltmeter reads ZERO (perhaps i'm not checking the voltage properly ?). The radio/phonograph selector switch seems to work (or atleast it switches to the am radio ok). All connections from tube sockets to the am radio/phonograph switch seem to be ok - so I'm not sure if it is most likely that the phonograph motor is cooked OR the selector switch is fried OR somehow, no voltage getting out to the motor. Obviously, someone - way back when - saw fit to splice the phonograph motor wires directly into the AC cord - so at some point, the phonograph motor had stopped working. Any ideas? Thanks.
. I did a complete recap, replaced a couple of resistors. Three of the original tubes were bad and they were replaced as well (all tubes now test ok). I plugged in the set last night and it came to life - the dial light coming on, all tubes came on and it was receiving radio stations no problems. However, when I flip the selector switch to phonograph, the motor does not run. I checked the resistance across the phonograph motor wire leads and get around 48 ohms. I don't know if this is normal or if it means the motor is cooked. I connected a voltmeter to the phonograph power wire leads coming from the set and my voltmeter reads ZERO (perhaps i'm not checking the voltage properly ?). The radio/phonograph selector switch seems to work (or atleast it switches to the am radio ok). All connections from tube sockets to the am radio/phonograph switch seem to be ok - so I'm not sure if it is most likely that the phonograph motor is cooked OR the selector switch is fried OR somehow, no voltage getting out to the motor. Obviously, someone - way back when - saw fit to splice the phonograph motor wires directly into the AC cord - so at some point, the phonograph motor had stopped working. Any ideas? Thanks.
