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Re: Help with 8.5v rail
You mean a BD234 or 2sd234 right? Thanks for responding Kent. I'm going to give it a shot. On another note, do you sell extraction springs for the ribbon controller?
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-Mike --- In yamahacs80@..., kent spong <kent_spong@...> wrote:
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Re: Help with 8.5v rail
Hi
I would replace the tip31 and instead use a BD324 , To: yamahacs80@... From: mborish_2000@... _________________________________________________________________ View your Twitter and Flickr updates from one place � Learn more! |
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Help with 8.5v rail
A few months ago, I accidentally shorted the 8.5v rail to ground while calibrating VR723. (I know, I'm an idiot.) Common sense told me to take out TR709, check it and replace. I replaced TR709 with a TIP31C as well as IC722 and still have the same problem on the output: 3 volts and some change. I Removed the lead and get about 7.8 volts with the PSU unloaded and a little bit less with a 1M ohm load. The metal oxide resistor reads about 8/10 of an ohm in circuit.
I was wondering if anybody could post what some of the voltages are in their CS-80 PSU for me. It would be nice if I could have the voltages from TR711, TR710, D713 and IC722 |
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Re: VCO153 project in board test phase
That is great......
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Now I have a question as I recieved 2 CS60 Voice Cards for parts yesterday........for my CS80. I have 2 voices in panel 2 that sound out of whack and I believe it is to do with the Waveshape chip (IG00158) as it only affects the waves听saw and pulse.... Would the best advice be to use the new cards as is with the "32degree" IG00153's or to attempt the exchanging of the waveshape chip as it is soldered directly to the board..... if so....can the IG00158 be socketed if i use a spare socket from another chip of my spare boards on the reinstallation??, or does it need to be against the pcb..... for reference, I have the newer more stable 听osc chips with the听 suggested mod which听I did back in听 the 90s....of course back then I had no use for the older chips, and lost the instructions at the same time.... Any suggestions before desoldering??? -----Original message-----
From: The Old Crowoldcrow@... Date: Tue, 17 Mar 2009 22:39:13 -0600 To: yamahacs80@... Subject: [yamahacs80] VCO153 project in board test phase Hey folks, its been a while, but I have this thing in testing right now. This is an equivalent circuit to the IG00153. This differs from my MOTM-style modular 153 oscillator in that it is strictly the VCO IC with a ramp output, linear CV input, current bias input (FT) for octave select and exponential modulation (vibrato) input. It can use the original M-board FET and charge pump capacitor, or those can be removed and local ones installed. I made this mainly to see about replacing things at the chip level, but not relying on custom devices. It is 98% SMT parts, with only 3 parts left through-hole for the moment (mainly to swap things and see how the specs change). It no longer needs an input offset trimmer, or external frequency compensation of the inputsumming amp. The DIL-16 footprint in the middle of the board is used to install it into an actual IG00153 socket. Generally it is low-profile enough to fit between M boards (it does in my CS-50). It has internal temperature compensation of the charge switch and comparator, making it much more stable than the original device. The charge pump core circuit runs on its own internal 10V reference supply. Eventually I want to craft the entire M-board from standard circuits. The waveshaper is done (it is the one I made for the 153 module). The EGs are done. The filters are done. I know how to build the VCA, thats next. In any case here is an image of the board, a bit larger than actual size. More later... Crow /**/ |
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R茅p. : Hi , long time since i have visited ,,,
nicolas
Hey salut francois ...
听 C fou l'ete du mien hein . pas croyable .听听 Ta toujours id茅e de le vendre ? 听 ok svp tu me donneras les lien des tracks audio . 听 a+ Nicolas . --- En date de听: Mar, 24.3.09, Fran莽ois Globensky <globensky_f@...> a 茅crit听: De: Fran莽ois Globensky <globensky_f@...> Objet: R茅p. : [yamahacs80] Hi , long time since i have visited ,,, 脌: yamahacs80@... Date: mardi 24 Mars 2009, 23 h 12 Allo Nicolas, Bonne chance dans ta restauration on garde le contact. Je crois, j'esp猫re que le mien n'aura pas besoin d'une job de cette envergure... Je vais mettre des photos bient么t sur le groupe et sur flickr et si je peux trouver un peu de temps quelques tracks audio. 脌+ Fran莽ois 听 --- En date de听: Lun, 23.3.09, zenithaudio2003 <zenithaudio2003@ yahoo.ca> a 茅crit听: De: zenithaudio2003 <zenithaudio2003@ yahoo.ca> Objet: [yamahacs80] Hi , long time since i have visited ,,, 脌: yamahacs80@yahoogro ups.com Date: lundi 23 Mars 2009, 17 h 53 This is me the Microsine cs-80 dude . I have started again the restoration of that poor CS-80 . All pictures will be uploaded to my flickr account ((( . com/photos/ 31603983@ N05/ )) , this can be interesting for some of you , and very disturbing for some others . ( please take note that my usual language is french so will try to coherent and forgive the mistake ) . first , the microsine system have been removed from the cs-80 because the external interface was lost. I really think this was the only cs-80 equiped with the microsine system . i live near what used to be the microsine cie . Unable to contact the owner or to find the interface or info , i decided to put the cs-80 back to it's factory condition. Thanks to a CS-80 group member . I have most of the missing parts . T51 52 53 54 boards and factory preset knob assembly , they were removed by microsine to fit the microsine system boards. The user presets assembly is still missing ( if someone as that part to sell i will be glad to pay for )). it is not mandatory but sure will be a nice feature to have . I thank in advance to all members of this group , and Old crow for the informations that will make this crazy attempt to be posible . Does anyone can give me some advise about the key contact , is it silver/palladium ? And does someone as a section of contacts to sell , a section on mine as been badly corroded with acid of the memory back-up battery of the microsine system. Nicolas ( Montreal canada ) D茅couvrez les photos les plus int茅ressantes du jour. . com/explore/ interesting/ 7days/ [Non-text portions of this message have been removed] __________________________________________________________________ Obtenez l'adresse de courriel parfaite: @ymail.com or @rocketmail.com. Obtenez votre nouvelle adresse maintenant 脿 . [Non-text portions of this message have been removed] |
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R茅p. : Hi , long time since i have visited ,,,
Fran莽ois Globensky
Allo Nicolas,
Bonne chance dans ta restauration on garde le contact. Je crois, j'esp猫re que le mien n'aura pas besoin d'une job de cette envergure... Je vais mettre des photos bient么t sur le groupe et sur flickr et si je peux trouver un peu de temps quelques tracks audio. 脌+ Fran莽ois 听 --- En date de听: Lun, 23.3.09, zenithaudio2003 <zenithaudio2003@...> a 茅crit听: De: zenithaudio2003 <zenithaudio2003@...> Objet: [yamahacs80] Hi , long time since i have visited ,,, 脌: yamahacs80@... Date: lundi 23 Mars 2009, 17 h 53 This is me the Microsine cs-80 dude . I have started again the restoration of that poor CS-80 . All pictures will be uploaded to my flickr account ((( . com/photos/ 31603983@ N05/ )) , this can be interesting for some of you , and very disturbing for some others . ( please take note that my usual language is french so will try to coherent and forgive the mistake ) . first , the microsine system have been removed from the cs-80 because the external interface was lost. I really think this was the only cs-80 equiped with the microsine system . i live near what used to be the microsine cie . Unable to contact the owner or to find the interface or info , i decided to put the cs-80 back to it's factory condition. Thanks to a CS-80 group member . I have most of the missing parts . T51 52 53 54 boards and factory preset knob assembly , they were removed by microsine to fit the microsine system boards. The user presets assembly is still missing ( if someone as that part to sell i will be glad to pay for )). it is not mandatory but sure will be a nice feature to have . I thank in advance to all members of this group , and Old crow for the informations that will make this crazy attempt to be posible . Does anyone can give me some advise about the key contact , is it silver/palladium ? And does someone as a section of contacts to sell , a section on mine as been badly corroded with acid of the memory back-up battery of the microsine system. Nicolas ( Montreal canada ) D茅couvrez les photos les plus int茅ressantes du jour. [Non-text portions of this message have been removed] |
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Re: Hi , long time since i have visited ,,,
tmoravan
--- In yamahacs80@..., "zenithaudio2003" <zenithaudio2003@...> wrote:
Hello -- do you mean the panel with all the small sliders and switches? If so, I have one of those I can sell you. Tom |
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Re: Hi , long time since i have visited ,,,
zenithaudio2003
Yeah brave , is the word . I never listened live to a cs-80 , ( perhaps at a genesis concert) this is what is driving me . But anyway , any kind of work put on this historical synth will be a very profitable learning laboratory . I will soon put some less disturbing pictures .
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--- In yamahacs80@..., David Rogoff <david@...> wrote:
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Re: Hi , long time since i have visited ,,,
zenithaudio2003 wrote:
This is me the Microsine cs-80 dude . I have started again the restoration of that poor CS-80 . All pictures will be uploaded to my flickr account ((( )) , this can be interesting for some of you , and very disturbing for some othersYes - these pictures are like watching a slasher movie! Good luck - you're very brave! David |
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Re: Hi , long time since i have visited ,,,
WOW...!!
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--- In yamahacs80@..., "zenithaudio2003" <zenithaudio2003@...> wrote:
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Hi , long time since i have visited ,,,
zenithaudio2003
This is me the Microsine cs-80 dude . I have started again the restoration of that poor CS-80 . All pictures will be uploaded to my flickr account ((( )) , this can be interesting for some of you , and very disturbing for some others . ( please take note that my usual language is french so will try to coherent and forgive the mistake ) .
first , the microsine system have been removed from the cs-80 because the external interface was lost. I really think this was the only cs-80 equiped with the microsine system . i live near what used to be the microsine cie . Unable to contact the owner or to find the interface or info , i decided to put the cs-80 back to it's factory condition. Thanks to a CS-80 group member . I have most of the missing parts . T51 52 53 54 boards and factory preset knob assembly , they were removed by microsine to fit the microsine system boards. The user presets assembly is still missing ( if someone as that part to sell i will be glad to pay for )). it is not mandatory but sure will be a nice feature to have . I thank in advance to all members of this group , and Old crow for the informations that will make this crazy attempt to be posible . Does anyone can give me some advise about the key contact , is it silver/palladium ? And does someone as a section of contacts to sell , a section on mine as been badly corroded with acid of the memory back-up battery of the microsine system. Nicolas ( Montreal canada ) |
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Hi , long time since i have visited ,,,
zenithaudio2003
This is me the Microsine cs-80 dude . I have started again the restoration of that poor CS-80 . All pictures will be uploaded to my flickr account ((( )) , this can be interesting for some of you , and very disturbing for some others . ( please take note that my usual language is french so will try to coherent and forgive the mistake ) .
first , the microsine system have been removed from the cs-80 because the external interface was lost. I really think this was the only cs-80 equiped with the microsine system . i live near what used to be the microsine cie . Unable to contact the owner or to find the interface or info , i decided to put the cs-80 back to it's factory condition. Thanks to a CS-80 group member . I have most of the missing parts . T51 52 53 54 boards and factory preset knob assembly , they were removed by microsine to fit the microsine system boards. The user presets assembly is still missing ( if someone as that part to sell i will be glad to pay for )). it is not mandatory but sure will be a nice feature to have . I thank in advance to all members of this group , and Old crow for the informations that will make this crazy attempt to be posible . Does anyone can give me some advise about the key contact , is it silver/palladium ? And does someone as a section of contacts to sell , a section on mine as been badly corroded with acid of the memory back-up battery of the microsine system. Nicolas ( Montreal canada ) |
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Re: VCO153 project in board test phase
Fantastic news! People like you are the ones to be adored!
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Fredrik Segerfalk www.analogsweden.com/blog The Old Crow wrote:
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Re: CS-80 key trigger problem and the fix
I wonder if this is similar to when the notes above F5 don't go up when I try to bend them up听with the pitch bend ribbon?
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Tommy --- On Wed, 3/18/09, tmoravan <moravanskyt@...> wrote:
From: tmoravan <moravanskyt@...> Subject: [yamahacs80] CS-80 key trigger problem and the fix To: yamahacs80@... Date: Wednesday, March 18, 2009, 12:17 PM I originally reported a problem w. my CS80 in that the top octave of keys wasn't triggering any sound. I had some good suggestions from various techs and I verified that the actual keybed was sending the correct voltages from all keys. The testing and debugging centered around the KAS board. After carefully measuring the values for various keypresses up and down the keyboard, I came to the conclusion that the YM26600 was creating and assigning the right codes, but the YM26700 IC was not working properly. Thanks to the kindness of a listmember, I popped in a replacement YM26700 and now I have the full range of keys again. [Non-text portions of this message have been removed] |
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CS-80 key trigger problem and the fix
tmoravan
I originally reported a problem w. my CS80 in that the top octave of keys wasn't triggering any sound. I had some good suggestions from various techs and I verified that the actual keybed was sending the correct voltages from all keys.
The testing and debugging centered around the KAS board. After carefully measuring the values for various keypresses up and down the keyboard, I came to the conclusion that the YM26600 was creating and assigning the right codes, but the YM26700 IC was not working properly. Thanks to the kindness of a listmember, I popped in a replacement YM26700 and now I have the full range of keys again. |
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Re: VCO153 project in board test phase
We are saved... there IS a God...!!
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Cheers Scott, awesome. --- In yamahacs80@..., The Old Crow <oldcrow@...> wrote:
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Re: VCO153 project in board test phase
Yup this is terrific news! Well done scott :)
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WE STAND AT SALUTE!!!! this is awesome. a drop-in complete m-board pcb, with BOM, would be so huge......wow. --- On Wed, 3/18/09, The Old Crow <oldcrow@...> wrote: From: The Old Crow <oldcrow@...> |
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Re: VCO153 project in board test phase
WE STAND AT SALUTE!!!!
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this is awesome. a drop-in complete m-board pcb, with BOM, would be so huge......wow. --- On Wed, 3/18/09, The Old Crow <oldcrow@...> wrote:
From: The Old Crow <oldcrow@...> Subject: [yamahacs80] VCO153 project in board test phase To: yamahacs80@... Date: Wednesday, March 18, 2009, 1:39 AM Hey folks, its been a while, but I have this thing in testing right now. This is an equivalent circuit to the IG00153. This differs from my MOTM-style modular 153 oscillator in that it is strictly the VCO IC with a ramp output, linear CV input, current bias input (FT) for octave select and exponential modulation (vibrato) input. It can use the original M-board FET and charge pump capacitor, or those can be removed and local ones installed. I made this mainly to see about replacing things at the chip level, but not relying on custom devices. It is 98% SMT parts, with only 3 parts left through-hole for the moment (mainly to swap things and see how the specs change). It no longer needs an input offset trimmer, or external frequency compensation of the input summing amp. The DIL-16 footprint in the middle of the board is used to install it into an actual IG00153 socket. Generally it is low-profile enough to fit between M boards (it does in my CS-50). It has internal temperature compensation of the charge switch and comparator, making it much more stable than the original device. The charge pump core circuit runs on its own internal 10V reference supply. Eventually I want to craft the entire M-board from standard circuits. The waveshaper is done (it is the one I made for the 153 module). The EGs are done. The filters are done. I know how to build the VCA, thats next. In any case here is an image of the board, a bit larger than actual size. More later... . com/VCO153_ pic.gif Crow /**/ [Non-text portions of this message have been removed] |
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Re: VCO153 project in board test phase
Very good news, Scott!
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In the long run, your work will keep many, many of these machines alive. JH. ----- Original Message -----
From: "The Old Crow" <oldcrow@...> To: <yamahacs80@...> Sent: Wednesday, March 18, 2009 6:39 AM Subject: [yamahacs80] VCO153 project in board test phase Hey folks, its been a while, but I have this thing in testing right now. This is an equivalent circuit to the IG00153. This differs from my MOTM-style modular 153 oscillator in that it is strictly the VCO IC with a ramp output, linear CV input, current bias input (FT) for octave select and exponential modulation (vibrato) input. It can use the original M-board FET and charge pump capacitor, or those can be removed and local ones installed. I made this mainly to see about replacing things at the chip level, but not relying on custom devices. It is 98% SMT parts, with only 3 parts left through-hole for the moment (mainly to swap things and see how the specs change). It no longer needs an input offset trimmer, or external frequency compensation of the input summing amp. The DIL-16 footprint in the middle of the board is used to install it into an actual IG00153 socket. Generally it is low-profile enough to fit between M boards (it does in my CS-50). It has internal temperature compensation of the charge switch and comparator, making it much more stable than the original device. The charge pump core circuit runs on its own internal 10V reference supply. Eventually I want to craft the entire M-board from standard circuits. The waveshaper is done (it is the one I made for the 153 module). The EGs are done. The filters are done. I know how to build the VCA, thats next. In any case here is an image of the board, a bit larger than actual size. More later... Crow /**/ ------------------------------------ Yahoo! Groups Links |
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Re: VCO153 project in board test phase
Simply amazing.......
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This osc chip will fit on an 80? and you allready have a waveshaper circuit...thats my needs right there... wow....I just bought 2 CS60听voice boards to desolder.... I may get the ol'eighty up and out of bed afterall.... -----Original message-----
From: The Old Crow oldcrow@... Date: Tue, 17 Mar 2009 22:39:13 -0600 To: yamahacs80@... Subject: [yamahacs80] VCO153 project in board test phase Hey folks, its been a while, but I have this thing in testing right now. This is an equivalent circuit to the IG00153. This differs from my MOTM-style modular 153 oscillator in that it is strictly the VCO IC with a ramp output, linear CV input, current bias input (FT) for octave select and exponential modulation (vibrato) input. It can use the original M-board FET and charge pump capacitor, or those can be removed and local ones installed. I madethis mainly to see about replacing things at the chip level, but not relying on custom devices. It is 98% SMT parts, with only 3 parts left through-hole for the moment (mainly to swap things and see how the specs change). It no longer needs an input offset trimmer, or external frequency compensation of the input summing amp. The DIL-16 footprint in the middle of the board is used to install it into an actual IG00153 socket. Generally it is low-profile enough to fit between M boards (it does in my CS-50). It has internal temperature compensation of the charge switch and comparator, making it much more stable than the original device. The charge pump core circuit runs on its own internal 10V reference supply. Eventually I want to craft the entire M-board from standard circuits. The waveshaper is done (it is the one I made for the 153 module). The EGs are done. The filters are done. I know how to buildthe VCA, thats next. In any case here is an image of the board, a bit larger than actual size. More later... Crow /**/ [Non-text portions of this message have been removed] |
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