I have a what i guess is the intermix platter on my princess, my issue is i have a few 7” 45’s with the small hole. How do i “disable” the feature that changes the speed to 33 1/3 when those small hole 45’s are placed on the platter? I’d rather not cut a larger hole in the 45 Thx Allen
Sent from Altair IV
Hi Allen,
It's very simple.
If you remove the turntable, and look where the motor spindle is, you will see the idler wheel is on a bracket and it moves up and down depending upon the size of the record hole.
Next to that bracket is a kind of inclined bracket that pushes the idler up and down. It is held on by a circlip. Remove the circlip and remove that bracket and it will play both hole sizes at 45.
I have done it in many rock olas and it works perfectly.
Obviously your intermix needs to be complete and operating beforehand, and the red plastic triangle prong needs to operate to sense the hole size.
It's an easy fix and can be reverted back if need be.
It's useful in the UK where most 7 inches play at 45.
Regards
Nigel
On 8 Jul 2024 at 15:11, Allen Mamet via Jukebox-list jukebox-list@lists.netlojix.com wrote:
I have a what i guess is the intermix platter on my princess, my issue is i have a few 7” 45’s with the small hole. How do i “disable” the feature that changes the speed to 33 1/3 when those small hole 45’s are placed on the platter? I’d rather not cut a larger hole in the 45 Thx Allen
Sent from Altair IV _______________________________________________ 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/
I went on holiday and didn't use my Sunstar or Topaz for a few weeks. Both have SHP-3 amps. I haven't really had time to investigate this issue but am curious for others views.
Turned on the Sunstar and there was a rustling sound on one channel. Upon playing a record this turned into a loud static popping sound. Very sharp. Rejected the record and after selecting and rejecting a few records, all was fine. It wasn't static groove noise , it was heavy electrical popping static.
Then, next day, played my Topaz, and to my surprise, the same issue here. Probably worse. So it looks like a bit of lack of use has caused the same issues. My hunch is the board connectors, can anyone point me more accurately to the issue ?
Mute relay on Sunstar is perfect and clean.
I also noticed, that on unplugging the RCA phono inputs on this amp, it really screws up the sound when putting them back in. Muffled, quiet, flat. Switching the machines off and on a few minutes later fixes this. I don't understand why.
So why did lack of use for probably 2 weeks maximum cause the same problem in both jukeboxes ?
Nigel
If not a connector, I wonder if it might be a failing capacitor. I had a Webcor tape recorder years ago with the same rushing and popping sound and turned out to be a cap. When was the last time they were replaced?
Dean
On Sunday, July 21, 2024 at 11:03:57 AM PDT, Nigel Pugh via Jukebox-list jukebox-list@lists.netlojix.com wrote:
I went on holiday and didn't use my Sunstar or Topaz for a few weeks. Both have SHP-3 amps. I haven't really had time to investigate this issue but am curious for others views.
Turned on the Sunstar and there was a rustling sound on one channel. Upon playing a record this turned into a loud static popping sound. Very sharp. Rejected the record and after selecting and rejecting a few records, all was fine. It wasn't static groove noise , it was heavy electrical popping static.
Then, next day, played my Topaz, and to my surprise, the same issue here. Probably worse. So it looks like a bit of lack of use has caused the same issues. My hunch is the board connectors, can anyone point me more accurately to the issue ?
Mute relay on Sunstar is perfect and clean.
I also noticed, that on unplugging the RCA phono inputs on this amp, it really screws up the sound when putting them back in. Muffled, quiet, flat. Switching the machines off and on a few minutes later fixes this. I don't understand why.
So why did lack of use for probably 2 weeks maximum cause the same problem in both jukeboxes ?
Nigel
_______________________________________________ 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/
On 2024/07/21 11:34 a.m., Dean Carriveau via Jukebox-list wrote:
If not a connector, I wonder if it might be a failing capacitor. I had a Webcor tape recorder years ago with the same rushing and popping sound and turned out to be a cap. When was the last time they were replaced?
Dean
Resistors can also produce audio noise into circuits...
My old Heathkit Signal Tracer has a "Noise" test that pumps 100V (no current to speak of) across two terminals and played the result over the built-in speaker. This was for testing caps and resistors for noise in tube amps by connecting jumper wires with alligator clips to the terminals and placing them across the suspect part.
John :-#)#
On Sunday, July 21, 2024 at 11:03:57 AM PDT, Nigel Pugh via Jukebox-list <jukebox-list@lists.netlojix.com> wrote:I went on holiday and didn't use my Sunstar or Topaz for a few weeks. Both have SHP-3 amps. I haven't really had time to investigate this issue but am curious for others views.
Turned on the Sunstar and there was a rustling sound on one channel. Upon playing a record this turned into a loud static popping sound. Very sharp. Rejected the record and after selecting and rejecting a few records, all was fine. It wasn't static groove noise , it was heavy electrical popping static.
Then, next day, played my Topaz, and to my surprise, the same issue here. Probably worse. So it looks like a bit of lack of use has caused the same issues. My hunch is the board connectors, can anyone point me more accurately to the issue ?
Mute relay on Sunstar is perfect and clean.
I also noticed, that on unplugging the RCA phono inputs on this amp, it really screws up the sound when putting them back in. Muffled, quiet, flat. Switching the machines off and on a few minutes later fixes this. I don't understand why.
So why did lack of use for probably 2 weeks maximum cause the same problem in both jukeboxes ?
Nigel
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Causes are: Electrolytic capacitor leaking or failing to "form". Since these amps don't have a DC sensing circuit to disconnect the speakers, they are kept connected during the inrush at turn-on. As electrolytic caps age, this sort of noise can become more noticeable. It should only last a few seconds.
Noisy carbon resistor.
Noisy transistor.
The volume control sits between the preamp/AGC board and driver board. If the noise varies with volume control, it points to the preamp/AGC board.
Nigel, that amp is nearing fifty years old, it likely need a rebuild.
Moisture can also cause this, but probably not the case here.
Regards,
RobNYC
On Sunday, July 21, 2024 at 01:04:24 PM GMT-5, Nigel Pugh via Jukebox-list jukebox-list@lists.netlojix.com wrote:
I went on holiday and didn't use my Sunstar or Topaz for a few weeks. Both have SHP-3 amps. I haven't really had time to investigate this issue but am curious for others views.
Turned on the Sunstar and there was a rustling sound on one channel. Upon playing a record this turned into a loud static popping sound. Very sharp. Rejected the record and after selecting and rejecting a few records, all was fine. It wasn't static groove noise , it was heavy electrical popping static.
Then, next day, played my Topaz, and to my surprise, the same issue here. Probably worse. So it looks like a bit of lack of use has caused the same issues. My hunch is the board connectors, can anyone point me more accurately to the issue ?
Mute relay on Sunstar is perfect and clean.
I also noticed, that on unplugging the RCA phono inputs on this amp, it really screws up the sound when putting them back in. Muffled, quiet, flat. Switching the machines off and on a few minutes later fixes this. I don't understand why.
So why did lack of use for probably 2 weeks maximum cause the same problem in both jukeboxes ?
Nigel
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Thanks everyone for the replies on this.
I forgot to mention, the one amp was rebuilt in 1997 and the other in 2007, including all electrolytics and the filter caps.
The static and rustling sounds are present at the same volume, regardless of muted or not. Suggesting an issue on the power amp side I guess.
Repeated selecting and cancelling seems to clear the problem.
I'm just intrigued that for both jukeboxes in the same house started playing up at the same time - a few weeks of not being used.
Regards
Nigel
On 22 Jul 2024 at 09:00, Chan Gade via Jukebox-list jukebox-list@lists.netlojix.com wrote:
Causes are: Electrolytic capacitor leaking or failing to "form". Since these amps don't have a DC sensing circuit to disconnect the speakers, they are kept connected during the inrush at turn-on. As electrolytic caps age, this sort of noise can become more noticeable. It should only last a few seconds.
Noisy carbon resistor.
Noisy transistor.
The volume control sits between the preamp/AGC board and driver board. If the noise varies with volume control, it points to the preamp/AGC board.
Nigel, that amp is nearing fifty years old, it likely need a rebuild.
Moisture can also cause this, but probably not the case here.
Regards,
RobNYC
On Sunday, July 21, 2024 at 01:04:24 PM GMT-5, Nigel Pugh via Jukebox-list jukebox-list@lists.netlojix.com wrote:
I went on holiday and didn't use my Sunstar or Topaz for a few weeks. Both have SHP-3 amps. I haven't really had time to investigate this issue but am curious for others views.
Turned on the Sunstar and there was a rustling sound on one channel. Upon playing a record this turned into a loud static popping sound. Very sharp. Rejected the record and after selecting and rejecting a few records, all was fine. It wasn't static groove noise , it was heavy electrical popping static.
Then, next day, played my Topaz, and to my surprise, the same issue here. Probably worse. So it looks like a bit of lack of use has caused the same issues. My hunch is the board connectors, can anyone point me more accurately to the issue ?
Mute relay on Sunstar is perfect and clean.
I also noticed, that on unplugging the RCA phono inputs on this amp, it really screws up the sound when putting them back in. Muffled, quiet, flat. Switching the machines off and on a few minutes later fixes this. I don't understand why.
So why did lack of use for probably 2 weeks maximum cause the same problem in both jukeboxes ?
Nigel
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Nigel, check for variation in the bias current on the affected channel and also see if that channel's heatsink is heating up. If the noise is constant regardless of volume setting or mute, you are correct, it is the driver board.
RobNYC
On Monday, July 22, 2024 at 03:20:26 AM GMT-5, Nigel Pugh pughn@npsyssoft.force9.co.uk wrote:
Thanks everyone for the replies on this. I forgot to mention, the one amp was rebuilt in 1997 and the other in 2007, including all electrolytics and the filter caps. The static and rustling sounds are present at the same volume, regardless of muted or not. Suggesting an issue on the power amp side I guess. Repeated selecting and cancelling seems to clear the problem. I'm just intrigued that for both jukeboxes in the same house started playing up at the same time - a few weeks of not being used. RegardsNigel
On 22 Jul 2024 at 09:00, Chan Gade via Jukebox-list jukebox-list@lists.netlojix.com wrote:
Causes are: Electrolytic capacitor leaking or failing to "form". Since these amps don't have a DC sensing circuit to disconnect the speakers, they are kept connected during the inrush at turn-on. As electrolytic caps age, this sort of noise can become more noticeable. It should only last a few seconds.
Noisy carbon resistor.
Noisy transistor.
The volume control sits between the preamp/AGC board and driver board. If the noise varies with volume control, it points to the preamp/AGC board.
Nigel, that amp is nearing fifty years old, it likely need a rebuild.
Moisture can also cause this, but probably not the case here.
Regards,
RobNYC
On Sunday, July 21, 2024 at 01:04:24 PM GMT-5, Nigel Pugh via Jukebox-list jukebox-list@lists.netlojix.com wrote:
I went on holiday and didn't use my Sunstar or Topaz for a few weeks. Both have SHP-3 amps. I haven't really had time to investigate this issue but am curious for others views.
Turned on the Sunstar and there was a rustling sound on one channel. Upon playing a record this turned into a loud static popping sound. Very sharp. Rejected the record and after selecting and rejecting a few records, all was fine. It wasn't static groove noise , it was heavy electrical popping static.
Then, next day, played my Topaz, and to my surprise, the same issue here. Probably worse. So it looks like a bit of lack of use has caused the same issues. My hunch is the board connectors, can anyone point me more accurately to the issue ?
Mute relay on Sunstar is perfect and clean.
I also noticed, that on unplugging the RCA phono inputs on this amp, it really screws up the sound when putting them back in. Muffled, quiet, flat. Switching the machines off and on a few minutes later fixes this. I don't understand why.
So why did lack of use for probably 2 weeks maximum cause the same problem in both jukeboxes ?
Nigel
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