Hi, All:
I have not been on here in a long time. My bad back and old age have made me give up the jukes and pinballs. That said, one of my customers is a golf buddy, and he wouldn't take "no" for an answer. Last week he came with his grandsons and dropped off his Rockola 418 with a strange problem.
It might play 10 records just fine. Then it will place a record on the turntable, set down the tone arm and blow the 28V supply fuse. It does it in that exact same place in the cycle every time it does it. It took me a while to remember that, several years ago it did this same thing. At that time, Ron, God rest his soul, advised me to check the 3 cam switches. One of them was, in fact intermittent, and I replaced all 3 with higher current rating switches.
I have replaced the 28V supply 1.6A slo blo with a 2 amp circuit breaker to save money on fuses. Unplugging the AMP chassis does not clear the problem. If I unplug the Phono Power plug from the power supply, I can reset the breaker and it won't trip again, so I presume the short is in the phono wiring somewhere.
I have it in fail mode right now. It would seem I have a short somewhere on this 28v line. I would like to just cave man troubleshoot it by unhooking wires until the short goes away, but to do this without a ton of work and agonizing twisting of my old spine, it would be nice to have a wiring diagram that shows the plugs and wire colors, so I can do that. The Victory Glass manual doesn't have a wiring diagram for it. Is any of you aware of a wiring diagram for this unit?
Thanks in advance for any help.
Best
Mike
Hi Mike,
I don't have a wiring diagram, but,
can you work out exactly what point the fuse blows ?
What I would do is unplug the gripper motor. Make a selection and when the selected record is at the top, rotate the gripper motor with the knurled nut on the bottom, with your fingers. It will take a while but at the point the fuse blows, stop, and you will be able to see just what switch has just been activated.
Does it do it on both A and B sides ? It could be a shorted pin reset coil, an issue with the resistor that is added to slow the gripper down as it approaches the turntable, cam switch issue, shorting record counter if it's an electronic one (can't remember that age of Rock Ola).
If when you do all this and it works perfectly, it could be a gripper motor issue but I doubt that.
Is it always on the same selection ?
Nigel, uk
On 14 Sept 2025 at 19:57, mboessen--- via Jukebox-list jukebox-list@lists.netlojix.com wrote:
Hi, All:
I have not been on here in a long time. My bad back and old age have made me give up the jukes and pinballs. That said, one of my customers is a golf buddy, and he wouldn't take "no" for an answer. Last week he came with his grandsons and dropped off his Rockola 418 with a strange problem.
It might play 10 records just fine. Then it will place a record on the turntable, set down the tone arm and blow the 28V supply fuse. It does it in that exact same place in the cycle every time it does it. It took me a while to remember that, several years ago it did this same thing. At that time, Ron, God rest his soul, advised me to check the 3 cam switches. One of them was, in fact intermittent, and I replaced all 3 with higher current rating switches.
I have replaced the 28V supply 1.6A slo blo with a 2 amp circuit breaker to save money on fuses. Unplugging the AMP chassis does not clear the problem. If I unplug the Phono Power plug from the power supply, I can reset the breaker and it won't trip again, so I presume the short is in the phono wiring somewhere.
I have it in fail mode right now. It would seem I have a short somewhere on this 28v line. I would like to just cave man troubleshoot it by unhooking wires until the short goes away, but to do this without a ton of work and agonizing twisting of my old spine, it would be nice to have a wiring diagram that shows the plugs and wire colors, so I can do that. The Victory Glass manual doesn't have a wiring diagram for it. Is any of you aware of a wiring diagram for this unit?
Thanks in advance for any help.
Best
Mike _______________________________________________ Jukebox-list mailing list -- jukebox-list@lists.netlojix.com To unsubscribe send an email to jukebox-list-leave@lists.netlojix.com %(web_page_url)slistinfo%(cgiext)s/%(_internal_name)s Searchable Archives: http://jukebox.markmail.org/
No problem Mike, glad you are almost there with fixing it.
You could measure the resistance across both coils and compare, or desolder one wire from the suspect one and they again to see if the fuse blows.
Last year I replaced one of those coils on a Princess, and I sourced my replacement off a much newer model that had the blue plastic bracket around the coils. Once removed, the coil was the same and fitted the old mechanism fine.
Regards
Nigel
On 15 Sept 2025 at 01:12, mboessen mboessen@ktis.net wrote:
Hi, Nigel:
Nice to see a familiar name after several years!
By golly, you are right. After reading your post I got one of the neighbor kids to come down here and turn that gripper motor manually for me while I watched the cam switches. After about 6 cycles we determined that it was, in fact, only the B side, and it only happened after the Cam2 switch dropped into the detent. Consulting the diagram, that pointed to the B side selector lever reset coil. We rolled the selector to where I can get at that coil, but I ran out of time as I had to go watch the Kansas City Chiefs lose a heart breaker to the Philadelphia Eagles.
I believe my customer has a couple of those wiper arms at his place somewhere. Not sure if they are the right ones, but if they are, I can swipe a coil off one of those. The coil doesn't have the burned up look of the usual shorted coil, but they can fail other ways.
I'll let you know what I find. Thanks for the tip!
Best
Mike
On 2025-09-14 14:18, Nigel Pugh wrote:
Hi Mike, I don't have a wiring diagram, but, can you work out exactly what point the fuse blows ? What I would do is unplug the gripper motor. Make a selection and when the selected record is at the top, rotate the gripper motor with the knurled nut on the bottom, with your fingers. It will take a while but at the point the fuse blows, stop, and you will be able to see just what switch has just been activated. Does it do it on both A and B sides ? It could be a shorted pin reset coil, an issue with the resistor that is added to slow the gripper down as it approaches the turntable, cam switch issue, shorting record counter if it's an electronic one (can't remember that age of Rock Ola). If when you do all this and it works perfectly, it could be a gripper motor issue but I doubt that. Is it always on the same selection ? Nigel, uk
On 14 Sept 2025 at 19:57, mboessen--- via Jukebox-list <jukebox-list@lists.netlojix.com [1]> wrote:
Hi, All:
I have not been on here in a long time. My bad back and old age have
made me give up the jukes and pinballs. That said, one of my customers is a golf buddy, and he wouldn't take "no" for an answer. Last week he came with his grandsons and dropped off his Rockola 418 with a strange problem.
It might play 10 records just fine. Then it will place a record on the turntable, set down the tone arm and blow the 28V supply fuse. It does it in that exact same place in the cycle every time it does it. It took me a while to remember that, several years ago it did this same thing. At that time, Ron, God rest his soul, advised me to check the 3 cam switches. One of them was, in fact intermittent, and I replaced all 3 with higher current rating switches.
I have replaced the 28V supply 1.6A slo blo with a 2 amp circuit breaker to save money on fuses. Unplugging the AMP chassis does not clear the problem. If I unplug the Phono Power plug from the power supply, I can reset the breaker and it won't trip again, so I presume the short is in the phono wiring somewhere.
I have it in fail mode right now. It would seem I have a short somewhere on this 28v line. I would like to just cave man troubleshoot it by unhooking wires until the short goes away, but to do this without a ton of work and agonizing twisting of my old spine, it would be nice to have a wiring diagram that shows the plugs and wire colors, so I can do that. The Victory Glass manual doesn't have a wiring diagram for it. Is any of you aware of a wiring diagram for this unit?
Thanks in advance for any help.
Best
Mike _______________________________________________ Jukebox-list mailing list -- jukebox-list@lists.netlojix.com To unsubscribe send an email to jukebox-list-leave@lists.netlojix.com %(web_page_url)slistinfo%(cgiext)s/%(_internal_name)s Searchable Archives: http://jukebox.markmailorg/
Links:
[1] mailto:jukebox-list@lists.netlojix.com
jukebox-list@lists.netlojix.com
-
mboessen＠ktis.net -
Nigel Pugh