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Post by mauro on Jul 12, 2018 0:27:40 GMT
Actually voltage under load was -31.5, not that 1 volt matters.
I tried many selections and they were all identical.
Although my first selection D1 actually played D1!
After that it was messed up again.
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Post by mauro on Jul 14, 2018 17:59:12 GMT
New development,
Still plagued with wrong selections but now the 0.4a fuse in the junction box keeps blowing after 1-2 selections. I can't find any of this value around so I have been using 0.5fb. I'm wondering if this should be a sb fuse?
I'm looking through the schematic but if anyone cares to suggest a likely cause, I'm all ears.
Thanks
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Post by Ron Rich on Jul 14, 2018 23:20:41 GMT
Mauro,
Check that fuse size-- I do not recall a 4/10 amp being used in that model--and yes, it' about 90 % probable it should be a SB (Most coil fusing is).
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Post by robnyc on Jul 15, 2018 4:01:03 GMT
Mauro, the 2104 (same system) spec's a 4/10A Fusetron. A 1/2 A-slo should be fine.
RobNYC
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Post by Ron Rich on Jul 15, 2018 4:18:52 GMT
Mauro,
My opinion, once again, runs contrary to Rob's. I would not hesitate to use a lower size fuse, but sure never use a larger size, especially knowing that circuit "had a problem". Ron Rich
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Post by mauro on Jul 16, 2018 0:10:17 GMT
Well I've now found both 500ma and 375ma fuses locally.
The fuses that opened were both fast types so that may have been the problem.
I have a slow fuse in it now and it seems to be holding.
Time will tell.
I have rechecked the reversing switches and they are adjusted perfectly and are making and breaking.
All moving pieces inside the junction box are moving freely.
Just want to restate that the Wurlitzer carousel systems are not my strength so any ideas on why the wrong pins are being released would be welcome.
Also I removed the selection keys again and went over them, the dish paper is in place over the C and D keys and all are making and breaking.
Credit unit is operating well also.
Where to look?
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Post by Ron Rich on Jul 16, 2018 1:01:11 GMT
Mauro,
My last "idea"--for now at least-- check that ALL--plugs are installed correctly--
Ron Rich
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Post by mauro on Jul 16, 2018 1:16:19 GMT
Ok, just to recap where I am,
If I release a selection pin manually everything works as it should.
If I make a selection using the selector switches it raises the wrong pin only when selecting D or C selections.
A and B selections are fine.
Could this be a stop magnet issue?
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Post by mauro on Jul 16, 2018 23:30:40 GMT
Almost there,
I can now identify the problem exactly.
The C selections seem to be working for now but the D selections are still all over the place.
I figured out that A selections do not need the wobble plate to move, B selections engages the B stop solenoid and C selections engages the C stop solenoid.
D selections engages no solenoid so the wobble plate moves to its limit to align the pins with D selections. The plate is moving to its limit but there seems to be a timing problem.
If I hold the wobble plate at its furthest travel (D position) and I have someone select a D selection it plays the correct record, so the selection solenoid is firing either too eary or too late. The plate moves freely and driver solenoid is not sticking.
Would this be a function of the timing relay in the credit unit?
I have already replaced the 100mfd capacitor there but wondering if I should increase the value to ??
Or could it be something else?
I apologize for the amount of time it took me to figure this out and I appreciate the help thus far very much!!
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Post by robnyc on Jul 17, 2018 2:43:49 GMT
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Post by Ron Rich on Jul 17, 2018 4:36:46 GMT
What didja do to the C section, to "make it work" ?? Ron Rich
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Post by mauro on Jul 17, 2018 15:27:48 GMT
Ron, I wish I knew? Lol
I had my daughter making selections while I was laying on the floor of the juke watching everything inside the junction box and the C selections she made seem to play correctly.
I believe once I figure out the D issue that the C's will be fine as well.
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Post by Ron Rich on Jul 17, 2018 16:27:18 GMT
Hi Mauro,
At this point, I can only assume it's one of two things--
1. Stiffness in the mechanical linkage--or
2. One of the round plugs has lost it's index-er--and is incorrectly plugged in.
Ron Rich
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Post by mauro on Jul 17, 2018 17:54:05 GMT
All plugs have index/locator pins
I'm going to concentrate my effort around the driver solenoid, perhaps there is a very slight bind that I'm not noticing which may be just enough to affect it when it has to pull the wobble plate to its limit.
Will let you know if I come up with anything.
👍🤞
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Post by Ron Rich on Jul 17, 2018 23:30:29 GMT
Hi Mauro,
My GUESS, is---- that you are "concentrating" in the correct area ! lol !
Good luck !
Ron Rich
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