Wurlitzer 3010 Override Relay circuit
Posted: Wed May 13, 2015 12:23 am
Hi Ron,
As always, forgive my verbiage. I am novice with the electronics stuff.
I finally got back to this machine today and I am still stumped. Let's start from scratch with the readings I took today.
First the machine will cycle and play if I engage the switches on the override relay manually. Everything works perfectly. If a pin in the selector drum is up it catches, loads the record, plays. When I hit the reject button it cycles as it should until I manually release the switches on the override relay.
If no pins are up and I manually engage the override relay the mech rotates and the turntable motor comes on, but with no pin up it will operate until I release the override relay switches.
I had my meter this time and I double checked how I should be measuring.
There are two connections on the relay that I assume control the magnet that activates the switches attached to the relay.
With the power off and the meter set to OHMS I read a 0 between these two connections.
With power on and no pins up I read 30V DC on one side and -30V DC on the other side. With pin up, it reads the same.
I removed the drum and checked the continuity between the override switches. No breaks there.
The manual does not have an electrical sequence but checking a different manual it seems like getting voltage on both sides at rest and when a pin is activated is not what should be happening. I'm noting that the transfer switch is a part of this circuit.
I cleaned the override switches.
What am I missing here? If I can't get this fixed, is there anybody out there that I can send it to?
Thanks,
mark
As always, forgive my verbiage. I am novice with the electronics stuff.
I finally got back to this machine today and I am still stumped. Let's start from scratch with the readings I took today.
First the machine will cycle and play if I engage the switches on the override relay manually. Everything works perfectly. If a pin in the selector drum is up it catches, loads the record, plays. When I hit the reject button it cycles as it should until I manually release the switches on the override relay.
If no pins are up and I manually engage the override relay the mech rotates and the turntable motor comes on, but with no pin up it will operate until I release the override relay switches.
I had my meter this time and I double checked how I should be measuring.
There are two connections on the relay that I assume control the magnet that activates the switches attached to the relay.
With the power off and the meter set to OHMS I read a 0 between these two connections.
With power on and no pins up I read 30V DC on one side and -30V DC on the other side. With pin up, it reads the same.
I removed the drum and checked the continuity between the override switches. No breaks there.
The manual does not have an electrical sequence but checking a different manual it seems like getting voltage on both sides at rest and when a pin is activated is not what should be happening. I'm noting that the transfer switch is a part of this circuit.
I cleaned the override switches.
What am I missing here? If I can't get this fixed, is there anybody out there that I can send it to?
Thanks,
mark