1. Disc graphophones -- most front mounts and many early rear mounts.
Symptom: Turntable unwinds all at once, or spins and sticks.
Solution: You have a worn out turntable drive gear. Most of these gears were made of fiber, probably to quiet motor rumble. Purchase a replacement from the parts suppliers. The gear is just pressed into place. Sometimes I tack down the new one with a little epoxy.
2. Columbia Grafonolas
Sympton: Tone arm doesn't swivel because elbow is cracked.
Solution: Purchase a replacement elbow from the parts suppliers. They are available in the most common sizes.
3. Cylinder Graphophones, certain A series machines.
Sympton: Feed screw or reproducer won't advance or engage because housings are cracked or warped, chassis is warped, etc.
Solution: Toss the machine in the garbage. Or live with it as is.
You have a pot metal upperworks. Over the years the pot metal has swollen and cracked. Notorious for the use of pot metal, Columbia even went so far as to employ pot metal spring barrels on a few of its most inexpensive machines such as the AP.
Possible pot metal components include:
*The sleeve that holds the feed and its associated parts.
*The reproducer housing.
*The entire chassis (early style ATs).
I have seen recuts of the sleeve, and only the sleeve, in aluminum, but I am not certain that they are still available and I cannot vouch for how well they work.
We buy, sell, and repair antique phonographs and music boxes.
Pick-up and delivery possible in many parts of the midwest, south, and northeast.