October 2023 - Jukebox-list - lists.netlojix.com

Mills dance master amp
by Hans Minderman 10 Apr '26

10 Apr '26

Hi All, I’m finishing up a Mills Dance Master, I have it all mechanically working and I’m now ready to work on the amp (an MCP 1644 amp). I have a schematic for it from the manual but it is not very useful because the caps and resistors are only marked with the mills ‘mcp’ catalog number and not with the actual values. The corresponding parts list has the same issue with just listing the Mills catalog numbers and not actual values. I checked with Bill Bickers at Jukebox friday night but he does not have a schematic with values or a rebuilt kit either. If anyone has a schematic or a listing of the caps and the resistors and choke for this amp please let me know. Thank you for your help. Hans Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows

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Re: [Jukebox-list] AMI Continental 2 Microtecnica bias spring
by Federico Croci 22 Feb '24

22 Feb '24

Thanks!! > Il 17/01/2023 19:51, Chan Gade ha scritto: > Here it is on an arm in the I-200: > https://www.flickr.com/photos/90641375@N06/37325736231/ The hyperlink > probably won't get through, so copy/paste. > > Attached is a shot of the Continental 1 with counterweight. I did this > in 1986. It was necessary to cut off a small section of the mech dress > cap to clear the added counterweight. > > RobNYC -- Federico Croci wiz(a)tilt.it www.tilt.it

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Non-Polarized
by Jim McClave 06 Nov '23

06 Nov '23

Can a non-polarized cap be replaced with a polarized cap? In reference to the 1500 mfd 35wvdc NP caps in the Sebburg SHP 3 amp.

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Wurlitzer 3300 Top Tunes Latch Pin Actuator Arc Assembly for 2900
by Shankar Singh 05 Nov '23

05 Nov '23

Hi guys, Could a W3300 TT latch pin assy physically fit on a W2900? If so, could I modify the wiring to work on the 2900? Thank you Regards, Shankar Singh

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Re: hf100r pupularity meter
by Lore Gianno 23 Oct '23

23 Oct '23

Hi, with the details in the discussion that you suggested here https://jukeboxaddicts.proboards.com/thread/3712/seeburg-100c-cancel-any-pin I was able to deeply understand the sequence of contact closure and understand where the problem was (it was not so clear from the manual): during the C contact closure SC should still be closed for a short time in order to provide path to ground while in my case this was not happening. Thanks to all for the support as always ------ Messaggio originale ------ Da jukebox-list-request(a)lists.netlojix.com A jukebox-list(a)lists.netlojix.com Data 16/10/2023 09:00:04 Oggetto Jukebox-list Digest, Vol 256, Issue 1 >Send Jukebox-list mailing list submissions to >jukebox-list(a)lists.netlojix.com > >To subscribe or unsubscribe via email, send a message with subject or >body 'help' to >jukebox-list-request(a)lists.netlojix.com > >You can reach the person managing the list at >jukebox-list-owner(a)lists.netlojix.com > >When replying, please edit your Subject line so it is more specific >than "Re: Contents of Jukebox-list digest..." > >Today's Topics: > > 1. Re: hf100r pupularity meter (Tony Miklos) > 2. Seeburg STD 4 Problem (Jim McClave) > 3. A "shocking" 6L6 problem (Tony Miklos) > 4. Re: A "shocking" 6L6 problem (Jay Hennigan) > 5. Re: A "shocking" 6L6 problem (Tony Miklos) > 6. Re: A "shocking" 6L6 problem (Paul Howlett) > 7. Re: A "shocking" 6L6 problem (Jay Hennigan) > 8. Re: OT: Is there no end to crazy? ;) (Chan Gade) > 9. Re: A "shocking" 6L6 problem (Chan Gade) > > >---------------------------------------------------------------------- > >Message: 1 >Date: Sun, 15 Oct 2023 07:31:16 -0400 >From: Tony Miklos <tonysjukeboxrepair(a)gmail.com> >Subject: [Jukebox-list] Re: hf100r pupularity meter >To: jukebox-list(a)lists.netlojix.com >Message-ID: <aedbb78c-1903-4993-8fa9-bef5202ff6fd(a)Gmail.Com> >Content-Type: text/plain; charset=UTF-8; format=flowed > >I thought he might understand it if put into different words. They are >called a "make before break" switch, meaning all three contacts make >before either of the others break. > >Tony > >On 10/14/2023 9:54 AM, Jukebox Repairman via Jukebox-list wrote: >> Isn’t that what I said? They are the only pair in the upper switch stack >> that make and break >> >> On Sat, Oct 14, 2023 at 7:43 AM Tony Miklos via Jukebox-list < >>jukebox-list(a)lists.netlojix.com> wrote: >> >>> I don't have a manual in front of me, they are in another building, and >>> unfortunately I don't have the contacts memorized (I should by now). >>> All I can say is that TWO contacts must be closed to energize that >>> coil. As the contact blade of one is pushed, all three contacts touch >>> for a split second. When it reaches the full lift height, it opens one >>> of them. If you follow the manual and adjust to the 64th of an inch, >>> you will get it right. Be sure to start with the first adjustment and >>> follow through to the last one, in the order they are written. >>> >>> Tony >>> >>> On 10/14/2023 6:12 AM, Lore Gianno via Jukebox-list wrote: >>>> Hi, >>>> yes I have the manual, looking at the diagram it seems the popularity >>>> meter is triggered by contact IC, but this is one that stays triggered >>>> during play so I have doubts... >>>> Anyway, I just cleaned all the contacts from upper and lower set of >>>> contacts, it seems better but not solved: sometimes stills stays >>>> energized. >>>> Can you please tell me exactly which contact is the one to look into? >>>> Thanks >>>> >>>> ------ Messaggio originale ------ >>>> Da "Jukebox Repairman" <jukin510(a)gmail.com> >>>> A "Jukebox mailing list" <jukebox-list(a)lists.netlojix.com>; "Lore >>>> Gianno" <lore.gianno(a)gmail.com> >>>> Data 13/10/2023 15:45:51 >>>> Oggetto Re: [Jukebox-list] hf100r pupularity meter >>>> >>>>> The upper switch stack has a set of contacts that make & break >>>>> controlling the pulse for that circuitry. They have to be clean, >>>>> grease / oil free and adjusted correctly. If you don’t have a manual >>>>> I’m happy to email a copy of that page but I’m away until Monday >>>>> >>>>> On Fri, Oct 13, 2023 at 4:36 AM Lore Gianno via Jukebox-list >>>>> <jukebox-list(a)lists.netlojix.com> wrote: >>>>>> Dear all, >>>>>> today I switched on my hf100r after 3 months of stand by and I have 2 >>>>>> issues (previously it was perfect): >>>>>> I select the song, when then the disc is taken and starts to play the >>>>>> popularity meter solenoid gets activated but it stays activated, >>>>>> thus I >>>>>> have to immediately shut off in order to avoid the solenoid burning. >>>>>> I had a look at the popularity meter block and it seems fine, but for >>>>>> some reasons the solenoid continues to get current... >>>>>> Where does the signal come from? Where should I look? >>>>>> I also noticed a second symptom: pressing the reset switch on the back >>>>>> to stop playing the record does neither work anymore. >>>>>> >>>>>> Any ideas? >>>>>> Thanks >>>>>> Lorenzo >>>>>> _______________________________________________ >>>>>> Jukebox-list mailing list -- jukebox-list(a)lists.netlojix.com >>>>>> To unsubscribe send an email to jukebox-list-leave(a)lists.netlojix.com >>>>>> %(web_page_url)slistinfo%(cgiext)s/%(_internal_name)s >>>>>> Searchable Archives: http://jukebox.markmail.org/ >>>> _______________________________________________ >>>> Jukebox-list mailing list -- jukebox-list(a)lists.netlojix.com >>>> To unsubscribe send an email to jukebox-list-leave(a)lists.netlojix.com >>>> %(web_page_url)slistinfo%(cgiext)s/%(_internal_name)s >>>> Searchable Archives: http://jukebox.markmail.org/ >>> _______________________________________________ >>> Jukebox-list mailing list -- jukebox-list(a)lists.netlojix.com >>> To unsubscribe send an email to jukebox-list-leave(a)lists.netlojix.com >>> %(web_page_url)slistinfo%(cgiext)s/%(_internal_name)s >>> Searchable Archives: http://jukebox.markmail.org/ >> _______________________________________________ >> Jukebox-list mailing list -- jukebox-list(a)lists.netlojix.com >> To unsubscribe send an email to jukebox-list-leave(a)lists.netlojix.com >> %(web_page_url)slistinfo%(cgiext)s/%(_internal_name)s >> Searchable Archives: http://jukebox.markmail.org/ > >------------------------------ > >Message: 2 >Date: Sun, 15 Oct 2023 15:56:20 +0000 (UTC) >From: Jim McClave <juker17(a)yahoo.com> >Subject: [Jukebox-list] Seeburg STD 4 Problem >To: Jukebox Mailing List <jukebox-list(a)lists.netlojix.com> >Message-ID: <1045014787.6626762.1697385380684(a)mail.yahoo.com> >Content-Type: text/plain; charset=UTF-8 > >Working on the old "scans Twice doesnt pick up a record " problem. Going by the "symptom 3 troubleshooting guide. The write in voltage at the DCC reads @ 120 Vdc, but I dont see a drop when I make a selection. The guide mentions the write-in trigger. Seems like I dont have that trigger. Anyone else ever experience this ? > >------------------------------ > >Message: 3 >Date: Sun, 15 Oct 2023 20:13:48 -0400 >From: Tony Miklos <tonysjukeboxrepair(a)gmail.com> >Subject: [Jukebox-list] A "shocking" 6L6 problem >To: Jukebox mailing list <jukebox-list(a)lists.netlojix.com> >Message-ID: <10735202-7242-4e9b-b4e9-10d0ee127f88(a)Gmail.Com> >Content-Type: text/plain; charset=UTF-8; format=flowed > >Working on a Seeburg JL with metal cased RCA 6L6's. (don't recall >seeing those before) While trying to find an intermittent very loud >snap, crackle, and pop, I get a bit of a shock off the metal case of the >one 6L6. Turns out the plate is shorted to the metal enclosure! The >base must be a little small because the tube clips weren't grounding out >the B+, although it may have been intermittently and that may have been >the noise it was making. Put my meter on it and it was about 395vdc to >ground, .1 ohms from pin 3 to the metal case. > >Tony > > >------------------------------ > >Message: 4 >Date: Sun, 15 Oct 2023 17:38:48 -0700 >From: Jay Hennigan <jay(a)west.net> >Subject: [Jukebox-list] Re: A "shocking" 6L6 problem >To: Tony Miklos via Jukebox-list <jukebox-list(a)lists.netlojix.com> >Message-ID: <e072e4fb-3c73-67c0-25b0-d4b8e57eecec(a)west.net> >Content-Type: text/plain; charset=UTF-8; format=flowed > >On 10/15/23 17:13, Tony Miklos via Jukebox-list wrote: >> Working on a Seeburg JL with metal cased RCA 6L6's. (don't recall >> seeing those before) While trying to find an intermittent very loud >> snap, crackle, and pop, I get a bit of a shock off the metal case of the >> one 6L6. Turns out the plate is shorted to the metal enclosure! The >> base must be a little small because the tube clips weren't grounding out >> the B+, although it may have been intermittently and that may have been >> the noise it was making. Put my meter on it and it was about 395vdc to >> ground, .1 ohms from pin 3 to the metal case. > >Interesting! On metal 6L6s and most metal tubes the case is tied to pin >1 and this is usually grounded to chassis in the amplifier. > >Double-check the base of the tube and make sure that the center locating >pin hasn't broken off or been forced. You might be measuring pin 1. The >construction of the tubes has an interior glass envelope that insulates >the tube elements from the case. > >It's also possible that pin 1 was used as a hot tie-point, but in the >era of the JL, metal 6L6s were still somewhat common and I would think >Seeburg wouldn't have done that. > >Another possibility is that the phenolic base insulation broke down and >developed a carbon track between pin 3 and the case. > >-- >Jay Hennigan - jay(a)west.net >Network Engineering - CCIE #7880 >503 897-8550 - WB6RDV > > >------------------------------ > >Message: 5 >Date: Sun, 15 Oct 2023 20:49:08 -0400 >From: Tony Miklos <tonysjukeboxrepair(a)gmail.com> >Subject: [Jukebox-list] Re: A "shocking" 6L6 problem >To: jukebox-list(a)lists.netlojix.com >Message-ID: <4a453f96-623e-4369-8787-93d62cb189a0(a)Gmail.Com> >Content-Type: text/plain; charset=UTF-8; format=flowed > >I'll check that out tomorrow and report back. Whatever did go wrong, it >did have B+ voltage from it to ground (but zero from the other 6L6 to >ground). I always wondered how they got metal cases to seal good enough, >I didn't know they were glass inside! Now you have me thinking, if the >keyed pin in the center was off, and the tube was turned a few notches, >that would make sense for it to have B+ on the case. > >Tony > >On 10/15/2023 8:38 PM, Jay Hennigan via Jukebox-list wrote: >> On 10/15/23 17:13, Tony Miklos via Jukebox-list wrote: >>> Working on a Seeburg JL with metal cased RCA 6L6's. (don't recall >>> seeing those before) While trying to find an intermittent very loud >>> snap, crackle, and pop, I get a bit of a shock off the metal case of >>> the one 6L6. Turns out the plate is shorted to the metal enclosure! >>> The base must be a little small because the tube clips weren't >>> grounding out the B+, although it may have been intermittently and >>> that may have been the noise it was making. Put my meter on it and it >>> was about 395vdc to ground, .1 ohms from pin 3 to the metal case. >> >> Interesting! On metal 6L6s and most metal tubes the case is tied to >> pin 1 and this is usually grounded to chassis in the amplifier. >> >> Double-check the base of the tube and make sure that the center >> locating pin hasn't broken off or been forced. You might be measuring >> pin 1. The construction of the tubes has an interior glass envelope >> that insulates the tube elements from the case. >> >> It's also possible that pin 1 was used as a hot tie-point, but in the >> era of the JL, metal 6L6s were still somewhat common and I would think >> Seeburg wouldn't have done that. >> >> Another possibility is that the phenolic base insulation broke down >> and developed a carbon track between pin 3 and the case. >> > >------------------------------ > >Message: 6 >Date: Sun, 15 Oct 2023 21:39:57 -0400 >From: Paul Howlett <pinballpauls(a)gmail.com> >Subject: [Jukebox-list] Re: A "shocking" 6L6 problem >To: Jukebox mailing list <jukebox-list(a)lists.netlojix.com> >Message-ID: > <CAJrUz2iFuW6YZJKMgAVbc3Vn7pwTrfpdhZ-V5DaBSDkAV7Le9g(a)mail.gmail.com> >Content-Type: text/plain; charset="UTF-8" > >My experience with metal 6L6's is that if you touch one they give you a >hell of a burn. > >On Sun, Oct 15, 2023, 8:49 PM Tony Miklos via Jukebox-list < >jukebox-list(a)lists.netlojix.com> wrote: > >> I'll check that out tomorrow and report back. Whatever did go wrong, it >> did have B+ voltage from it to ground (but zero from the other 6L6 to >> ground). I always wondered how they got metal cases to seal good enough, >> I didn't know they were glass inside! Now you have me thinking, if the >> keyed pin in the center was off, and the tube was turned a few notches, >> that would make sense for it to have B+ on the case. >> >> Tony >> >> On 10/15/2023 8:38 PM, Jay Hennigan via Jukebox-list wrote: >> > On 10/15/23 17:13, Tony Miklos via Jukebox-list wrote: >> >> Working on a Seeburg JL with metal cased RCA 6L6's. (don't recall >> >> seeing those before) While trying to find an intermittent very loud >> >> snap, crackle, and pop, I get a bit of a shock off the metal case of >> >> the one 6L6. Turns out the plate is shorted to the metal enclosure! >> >> The base must be a little small because the tube clips weren't >> >> grounding out the B+, although it may have been intermittently and >> >> that may have been the noise it was making. Put my meter on it and it >> >> was about 395vdc to ground, .1 ohms from pin 3 to the metal case. >> > >> > Interesting! On metal 6L6s and most metal tubes the case is tied to >> > pin 1 and this is usually grounded to chassis in the amplifier. >> > >> > Double-check the base of the tube and make sure that the center >> > locating pin hasn't broken off or been forced. You might be measuring >> > pin 1. The construction of the tubes has an interior glass envelope >> > that insulates the tube elements from the case. >> > >> > It's also possible that pin 1 was used as a hot tie-point, but in the >> > era of the JL, metal 6L6s were still somewhat common and I would think >> > Seeburg wouldn't have done that. >> > >> > Another possibility is that the phenolic base insulation broke down >> > and developed a carbon track between pin 3 and the case. >> > >> _______________________________________________ >> Jukebox-list mailing list -- jukebox-list(a)lists.netlojix.com >> To unsubscribe send an email to jukebox-list-leave(a)lists.netlojix.com >> %(web_page_url)slistinfo%(cgiext)s/%(_internal_name)s >> Searchable Archives: http://jukebox.markmail.org/ > >------------------------------ > >Message: 7 >Date: Sun, 15 Oct 2023 19:27:01 -0700 >From: Jay Hennigan <jay(a)west.net> >Subject: [Jukebox-list] Re: A "shocking" 6L6 problem >To: jukebox-list(a)lists.netlojix.com >Message-ID: <5135f45b-fde7-3ce9-94bf-4e6a04787e00(a)west.net> >Content-Type: text/plain; charset=UTF-8; format=flowed > >On 10/15/23 17:49, Tony Miklos via Jukebox-list wrote: >> I'll check that out tomorrow and report back. Whatever did go wrong, it >> did have B+ voltage from it to ground (but zero from the other 6L6 to >> ground). I always wondered how they got metal cases to seal good enough, >> I didn't know they were glass inside! Now you have me thinking, if the >> keyed pin in the center was off, and the tube was turned a few notches, >> that would make sense for it to have B+ on the case. > >Definitely inspect the socket. Pin 1 should be either left floating or >preferably tied to ground. If it's used as a tie point there's no >problem with glass 6L6s but it will be connected to the case if a metal >tube is used. > >-- >Jay Hennigan - jay(a)west.net >Network Engineering - CCIE #7880 >503 897-8550 - WB6RDV > > >------------------------------ > >Message: 8 >Date: Mon, 16 Oct 2023 04:13:55 +0000 (UTC) >From: Chan Gade <chan.gade(a)yahoo.com> >Subject: [Jukebox-list] Re: OT: Is there no end to crazy? ;) >To: 'Jukebox list' <jukebox-list(a)lists.netlojix.com> >Cc: "D. Resor" <organlists1(a)sonic.net> >Message-ID: <1072310713.1071512.1697429635980(a)mail.yahoo.com> >Content-Type: text/plain; charset=UTF-8 > > It is a hobby. > >Not really crazier than people spending thousands of dollars to get and restore ancient commercial phonographs. > >Items were destined for the landfill and are now preserved for history. > >RobNYC > > > On Friday, October 13, 2023 at 03:15:28 PM GMT-5, D. Resor via Jukebox-list <jukebox-list(a)lists.netlojix.com> wrote: > > Western electric 12a,13a horn Speaker > >https://www.youtube.com/watch?v=HRkRnPrEMk8 > > >Don Resor > > > >_______________________________________________ >Jukebox-list mailing list -- jukebox-list(a)lists.netlojix.com >To unsubscribe send an email to jukebox-list-leave(a)lists.netlojix.com >%(web_page_url)slistinfo%(cgiext)s/%(_internal_name)s >Searchable Archives: http://jukebox.markmail.org/ > > >------------------------------ > >Message: 9 >Date: Mon, 16 Oct 2023 04:21:22 +0000 (UTC) >From: Chan Gade <chan.gade(a)yahoo.com> >Subject: [Jukebox-list] Re: A "shocking" 6L6 problem >To: Jukebox mailing list <jukebox-list(a)lists.netlojix.com> >Cc: Tony Miklos <tonysjukeboxrepair(a)gmail.com> >Message-ID: <1372593925.14529295.1697430082407(a)mail.yahoo.com> >Content-Type: text/plain; charset=UTF-8 > > Between semesters I was working for a co. that handled A.V. repairs for the NYC public schools. I perused their OEM files and service bulletins. One from Rheem Califone mentioned a model of their portable phono/PA units using 6L6 metal tubes causing shocks due to "capacitive conduction" internal to the tube. It sounds to me like it was really the sort of thing you experienced. The company offered free 6L6G replacements. > >RobNYC > > > On Sunday, October 15, 2023 at 07:14:30 PM GMT-5, Tony Miklos via Jukebox-list <jukebox-list(a)lists.netlojix.com> wrote: > > Working on a Seeburg JL with metal cased RCA 6L6's. (don't recall >seeing those before) While trying to find an intermittent very loud >snap, crackle, and pop, I get a bit of a shock off the metal case of the >one 6L6. Turns out the plate is shorted to the metal enclosure! The >base must be a little small because the tube clips weren't grounding out >the B+, although it may have been intermittently and that may have been >the noise it was making. Put my meter on it and it was about 395vdc to >ground, .1 ohms from pin 3 to the metal case. > >Tony > >_______________________________________________ >Jukebox-list mailing list -- jukebox-list(a)lists.netlojix.com >To unsubscribe send an email to jukebox-list-leave(a)lists.netlojix.com >%(web_page_url)slistinfo%(cgiext)s/%(_internal_name)s >Searchable Archives: http://jukebox.markmail.org/ > >------------------------------ > >Subject: Digest Footer > >_______________________________________________ >Jukebox-list mailing list -- jukebox-list(a)lists.netlojix.com >To unsubscribe send an email to jukebox-list-leave(a)lists.netlojix.com >%(web_page_url)slistinfo%(cgiext)s/%(_internal_name)s >Searchable archives: http://jukebox.markmail.org/ > > >------------------------------ > >End of Jukebox-list Digest, Vol 256, Issue 1 >********************************************

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Audio Question
by Jukebox Repairman 18 Oct '23

18 Oct '23

I recently swapped out a defective Astatic cartridge with a Pfhansteil P51 on my personal 1015. Since the swap the audio seems to have lost a lot of low end and sounds “tinny.” Years ago when I restored it, I had added a Bill Bickers upgrade to the volume control box to improve the bass response. Obviously I’d like it to sound like it did before the swap.

4 3

A "shocking" 6L6 problem
by Tony Miklos 17 Oct '23

17 Oct '23

Working on a Seeburg JL with metal cased RCA 6L6's. (don't recall seeing those before) While trying to find an intermittent very loud snap, crackle, and pop, I get a bit of a shock off the metal case of the one 6L6. Turns out the plate is shorted to the metal enclosure! The base must be a little small because the tube clips weren't grounding out the B+, although it may have been intermittently and that may have been the noise it was making. Put my meter on it and it was about 395vdc to ground, .1 ohms from pin 3 to the metal case. Tony

5 12

Seeburg Tormat Plug resistance
by Jim McClave 16 Oct '23

16 Oct '23

What should the resistance be on a Seeburg tormat rca-type plug on an STD 4 ? 160-tm7 tormat. I read a short from center pin to outer ground shell , Is this correct?

2 1

OT: Is there no end to crazy? ;)
by D. Resor 15 Oct '23

15 Oct '23

Western electric 12a,13a horn Speaker https://www.youtube.com/watch?v=HRkRnPrEMk8 Don Resor

3 2

Seeburg STD 4 Problem
by Jim McClave 15 Oct '23

15 Oct '23

Working on the old "scans Twice doesnt pick up a record " problem. Going by the "symptom 3 troubleshooting guide. The write in voltage at the DCC reads @ 120 Vdc, but I dont see a drop when I make a selection. The guide mentions the write-in trigger. Seems like I dont have that trigger. Anyone else ever experience this ?

1 0