Zenith is4041 record/ cassette player
There is a clip in the center of the turntable's spindle. Remove it and the turntable platter should lift up. That model of turntable is driven by a rubber surfaced idler wheel that is tightly held between the motor shaft and the inside of the turntable's rim by a spring.
Most likely problem(s):
1. The motor is seized. (Even a seized motor will hum, from the 60Hz vibration of its windings.) You should be able to spin it freely between your thumb and index finger, with no resistance. If not, you must totally disassemble it (easy job), clean out the bearing journals with alcohol, lubricate, and reassemble. If you decide just to oil it without cleaning out the bearings, it will quickly seize again.
2. The idler wheel is seized on its shaft. Same solution as 1.
3. The rubber surface of the idler wheel has become hard with age. Best solution for this is to replace it, if you can find one. Alternatively, there are various liquid chemicals around that can renew the surface of the rubber.
4. The pivot mechanism that allows the wheel to assume its proper position is seized. Same solution.
5. Any combination of the above, including all of them! :-)
While you're in there, look at the geared wheel that engages the teeth on the inside center of the turntable's platter. It will have a little "kicker" mechanism that is moved by the turntable's tone arm (part that holds the cartridge) as the tone arm nears the end of the record. This little mechanism is notorious for seizing, and should also be cleaned out and lubricated.
Aug 16, 2013 |
Zenith Televison & Video