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Post by mauro on Jun 4, 2018 22:27:36 GMT
I've been tinkering around with the coin register mechanism all weekend and feel like I'm getting closer to the proper adjustment but something new started happening, or perhaps not happening, which is making troubleshooting very difficult.
The selector crank does not search for the raised pin? If I trip a pin with my finger the turntable motor starts turning but the selector crank does not move to find the pin.
I've adjusted the override switch and cleaned, adjusted and verified all the switches on the back of the mech with an analog meter and all are fine.
Looking for any suggestions on where to go next, other than the curb, lol.
Thanks, Mauro
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Post by Ron Rich on Jun 4, 2018 22:37:09 GMT
Mauro,
Check that "record loading switch", and I believe there may be a slide "motor" switch somewhere inside the phono. Ron Rich
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Post by mauro on Jun 13, 2018 1:21:19 GMT
Hi Ron and gang,
I believe I finally have the credit unit adjusted properly, what a finicky contraption! Bright side is if I ever have to do it again it will take me about 5 minutes instead of 5 days!
The problem I'm having now is when the latch solenoid is energized and I make a selection the buttons stay in and nothing else happens, no pin is released.
If I release a pin by hand the turn table just starts spinning but the search arm does not turn to find the raised pin.
Anyone out there who can save me another 5 days of work?
Any suggestions welcome.
Ps. Ron, i could not locate anything by the name of a "motor slide" switch.
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Post by Ron Rich on Jun 13, 2018 2:47:35 GMT
Hi Mauro,
Did you check the record load switch ? The motor switch, if used (and I think it is) is a slide TYPE, switch, usually black plastic, located somewhere on one of the chassis under the mechanism shelf. Ron Rich
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Post by robnyc on Jun 13, 2018 4:20:14 GMT
Mauro, check the fuses. In your work you may have blown the LVDC fuse.
Does the turntable start turning as before when a pin it tipped?
If so it indicated that the play control relay in the amp is powered and thus the wobble plate switches are working -at least for that section of pins.
I'm not sure if they added a loading switch yet on that model. The 1800 has one on the rear of the junction box. The 1700 may have it on the mech deck under the dress cap slightly to the right of the front of the carousel. IIRC the selection system is separate even on those early models and should not be affected by any motor switch. The idea being that selections from wallboxes could still be made while the op' was changing records (we should be so lucky these days).
If no motor switch exists, tip a pin and use a plastic end of a pen to carefully nudge the blades of the two over-center switches at the real of the mach. These do get pitted and can stop the changer dead. Make sure that both switch have the torsion spring and that they can snap back and forth.
Make sure you have approx 25 volts DC at the motor terminals and the field coil. The old selenium rect may be dead or too weak to operate the motor. I've owned 13 of the carousel models with DC motors and at least three had bad armatures w/shorted turns.
Manually turn the knurled end of the motor shaft to jog it and see if it starts up (wear a glove)with a pin up. This again can indicate faulty over-center switches.
Don't get disheartened, this is a very repairable machine and a lot of fun once you get all the little s--ts taken care of.
RobNYC
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Post by mauro on Jun 14, 2018 0:46:38 GMT
Hey Rob,
Thanks for chiming in.
Got home from work and decided to go through all the above, turned on the juke pushed a pin and the carousel took off and played the record but stopped this just before dinner, pin had no effect after about 4 records played. Shut it down, had dinner, came back to garage and turned juke on lifted a pin and it started playing again.
Selector keys still don't lift a pin and stay latched in.
What do you think?
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Post by Ron Rich on Jun 14, 2018 2:41:50 GMT
Mauro,
You have two, most likely un-related problems. I would guess the motor not running would be a switch/relay contact in the motor run circuit, and the keyboard would also be a switch/relay in the selector circuit. Be sure the keyboard is plugged in correctly, and that none of the index pins are broken off those plugs. Ron Rich
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Post by mauro on Jun 24, 2018 18:41:36 GMT
Well, the 1700 is up and running finally!
By process of elimination, slowly but surely it lead me back to where I started, the credit unit.
Made a few more adjustment to the outer cam and full cycle switch and we're off to the races!
Thanks to Ron and Rob and all contributors here for your continued support in this great hobby!
Mauro
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