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Dear friends of the forum, finally the issue hac been solved: microswitch #2 was defective and, after installing a new one, my Rockola plays perfectly!
So thank you for your help. Let me send a special thank to Juergen 02 who drove me to identify the problem and support me intensively through the schematics!!!
I will continue to follow the forum, hoping in some way to give my contribution.
von - by
Dvd739
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Alles rund um Musikboxen
Dear friends of the forum, finally the issue hac been solved: microswitch #2 was defective and, after installing a new one, my Rockola plays perfectly!
So thank you for your help. Let me send a special thank to Juergen 02 who drove me to identify the problem and support me intensively through the schematics!!!
I will continue to follow the forum, hoping in some way to give my contribution.
von - by
Dvd739
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Alles rund um Musikboxen
I checked Microswitch#2 and it works properly. Please, could anyone send to me very detailed pictures of wiring of rectifier and Amp lock plug - 6 circuit at power distribution panel?
Thank you
Davide
von - by
Dvd739
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Alles rund um Musikboxen
Thanks empress 200 and newvalves for your information.
I have 2 motors and both show the sale problem. For this reason I focused my attention to the voltage of power distribution panel.
Since after the power distribution panel there is only the circuit of wires, I think that the voltage at the mech. socket of the panel must be 28VDC, mustn't it?
Have you an idea why the motor turns fast
von - by
Dvd739
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Alles rund um Musikboxen
Dear Forum,
after 1 year of regular operation, the problem at magazine motor is still here. I have this question for you: the right voltage at magazine (and gripper arm) motor is DC 28V or DC 35V?
I have the complete Instruction Manual: at page 11, at chapter "No. 4 play control relay (direct current) - description of operation" I read "... The second (contact) closes a 35 V.D.
von - by
Dvd739
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Alles rund um Musikboxen
Dear Forum,
after 1 year of regular operation, the problem at magazine motor is still here. I have this question for you: the right voltage at magazine (and gripper arm) motor is DC 28V or DC 35V?
I have the complete Instruction Manual: at page 11, at chapter "No. 4 play control relay (direct current) - description of operation" I read "... The second (contact) closes a 35 V.D.
von - by
Dvd739
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Alles rund um Musikboxen
After some months, I finally solved the problem of the magazine motor: it was a mechanical problem due to the cam that was not correctly positioned into odd and even tracks of the magazine. This caused the odd-even microswitches started the cycle in a wrong way.
Now, everything seems to be ok except for one point: selection A32 doesn't work. I think is not an electrical issue of selector A
von - by
Dvd739
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Alles rund um Musikboxen
Thanks Jürgen, I didn't catch, now it's clear. So, I have to investigate further. But I have no idea. Any recommedation based on your knowledge/experience?
Thank you
Davide
von - by
Dvd739
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Alles rund um Musikboxen
Dear Charly49, I read the discussion regarding another Rockola Tempo II started by Rockalore in which you gave your contribution. I read that in the wiring diagram the connections of rectifier in the power unit are wrongly displayed. If it's like that, the gripper arm motor should rotate in the wrong direction, too? Or only the magazine motor rotates in the wrong direction?
Thank you, David
von - by
Dvd739
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Alles rund um Musikboxen
Dear all, I read all the discussion, very interesting. I think someone of you can help me. I have a Rockola Tempo II 1485 (see discussion Rockola Tempo II mod. 1485 Restoration) and the magazine motor in scan mode and in operating mode runs in the opposite direction, so that magazine motor turns clockwise instead of counterclockwise.Checking with multimeter in scan mode, I measured +30 VDC at the
von - by
Dvd739
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Alles rund um Musikboxen
Hi Charly49,
after long investigation I identified the problem in the transformer. 2 years ago a workshop rebuilt it but made a wrong exit: 12,5 VAC instead of 25 VAC, so that the rectifier can't give 30 VDC to capacitor but only half (15 VDC).
After modifying the transformer as the original one, the reset coil works properly. Thanks again for your inputs, you are driving me in the right w
von - by
Dvd739
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Alles rund um Musikboxen
Hi Charly49,
I checked everything following your instructions:
- the first section of capacitor is charged with 15 VDC;
- if I connect the second section, this is charged with 15VDC, too;
- the resistance of the keyboard is zero.
So, I suppose the capacitor can't charge its first section at 30VDC but only at 15 VDC and the keyboard does its job charging the second section at 15 VDC,
von - by
Dvd739
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Alles rund um Musikboxen
Dear Charly49,
I have the full manual of Rockola 1485 but your recommendations are absolutely helpful for me because you drive me in investigation of faults.
I checked the following:
- select lamps, one of 3 was burned, now it's ok. The other 2 are new but don't light but I will check further, I would say it's a minor gap;
- I measured the resistance of 47 ohm resistor: it
von - by
Dvd739
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Alles rund um Musikboxen
Hi Charly49,
other trials made today.
1) The Credit Accumulator, when I switch on the power, has to be in the zero position? I suppose yes, and when I insert a coin one or more teeth of the gears are scaled and the two contacts close, right?
2) After one or more teeth are scaled, select light should come on but it doesn't happen. Why?
I don't understand why after the click no
von - by
Dvd739
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Alles rund um Musikboxen
Dear Charly49,
I'm back again after my summer holidays ... and it's time to go ahead with my Rockola.
I followed your instructions and I saw that, after inserting coin, I hear the soft click in the credit unit but the SELECT light doesn't come on and nothing else happens. What could it be: the electrolytic capacitor of credit unit? Which checks can I do for understanding the caus
von - by
Dvd739
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Alles rund um Musikboxen
Hi Charly49,
another step forward thanks to you!!!
One of the relay contacts had the fixed slat too close to the mobile slat and the circuit was always closed. I opened a little bit this slat and now the power is at motor only in SCAN and OPER positions (the last one when the microswitch of Scanning Switch is in Play position). So, that's seems to be solved.
Now I want to go forward.
von - by
Dvd739
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Alles rund um Musikboxen
Dear Charly49,
very interesting what you wrote!
When you mention the capacitor connected in parallel to Play Control Relay, do you mean the resistor (item 3 in attached draw)?
von - by
Dvd739
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Alles rund um Musikboxen
Hi Charly49,
I checked the voltages with tester in the pins of the red plug of Control Box. See attached file.
I don't understand where the resistances have to be measured. I don't know if the file attached can help to understand if the connections are right or wrong.
von - by
Dvd739
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Alles rund um Musikboxen
Hi Charly49,
I didn't check the voltage, yet. I'm not an electrician, so I don't know how to check with tester.
Regarding the Scan Switch Assembly, I reset manually it (all the teeth of the Scanning Ratchet after 4 turns of carousel in the proper direction) but when I connected the plug, the motor is with power.
I have a doubt about the "control box". With the tes
von - by
Dvd739
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Alles rund um Musikboxen
Hi everyone.
I own a Rockola Tempo II mod. 1485 that I am restoring. I reassembled all the electromechanical parts and, trying to make it work, I noticed the following problems:
1) by connecting the power plug, the carousel motor always remains powered, even if the Control Box selector is in the OFF position;
2) the carousel turns backwards, clockwise. Reading the manual, it should always
von - by
Dvd739
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Alles rund um Musikboxen
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