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2012-01-05 by fab8soul
Hi everyone, after having read through the variuos posts in this forum, I am pretty sure that I have this "classical" relay problem. In theory I understand what needs to be done, but where can I find the relays? How can I indentify them as such? How do I bypass? The synth works otherwise and I could get some really great sounds out of it - would be great to get it to work properly again! Thanks for your help!
2012-01-06 by Lee Borrell
http://2.imimg.com/data2/SD/JY/MY-2393894/iw85s8h2-250x250.jpg http://www.relays.cc/images/electric-relay-4078.jpg I have not been inside a CZ1 - above are photos of what a relay will look like. Vintage synth forum contributions: http://www.vintagesynth.com/casio/cz1.php suggest the relay is to the "right side of the panel". If there is a problem with it - then ebay provides a lot of electronic parts for cheap. ________________________________
From: fab8soul <stein.berlin@...> To: CZsynth@yahoogroups.com Sent: Thursday, 5 January 2012, 21:00 Subject: [CZsynth] Need help fixing relays of my CZ-1 please... Hi everyone, after having read through the variuos posts in this forum, I am pretty sure that I have this "classical" relay problem. In theory I understand what needs to be done, but where can I find the relays? How can I indentify them as such? How do I bypass? The synth works otherwise and I could get some really great sounds out of it - would be great to get it to work properly again! Thanks for your help! [Non-text portions of this message have been removed]
2012-01-06 by fab8soul
Thanks for this! I think I will be able to identify the relays now... If anyone has a precise info on where they are located, would be helpful though. I downloaded the schematics under files in this forum, but I can't really find what I need. Next question would be whether I should replace these relays or bypass them... and how would I do that? (I am not too bad at soldering) Thanks again! --- In CZsynth@yahoogroups.com, Lee Borrell <templarser@...> wrote:
> > http://2.imimg.com/data2/SD/JY/MY-2393894/iw85s8h2-250x250.jpg > > http://www.relays.cc/images/electric-relay-4078.jpg > > > I have not been inside a CZ1 - above are photos of what a relay will look like. Vintage synth forum contributions: > > http://www.vintagesynth.com/casio/cz1.php > > > suggest the relay is to the "right side of the panel". > > If there is a problem with it - then ebay provides a lot of electronic parts for cheap. > > > ________________________________ > From: fab8soul <stein.berlin@...> > To: CZsynth@yahoogroups.com > Sent: Thursday, 5 January 2012, 21:00 > Subject: [CZsynth] Need help fixing relays of my CZ-1 please... > > >  > Hi everyone, > > after having read through the variuos posts in this forum, > I am pretty sure that I have this "classical" relay problem. > > In theory I understand what needs to be done, but where can I find the relays? How can I indentify them as such? How do I bypass? > > The synth works otherwise and I could get some really great sounds out of it - would be great to get it to work properly again! > > Thanks for your help! > > > > > [Non-text portions of this message have been removed] >
2012-01-06 by scituate_mass
Hi Fab8, I used the part mentioned in my earlier post here: http://launch.groups.yahoo.com/group/CZsynth/message/4468 This is the part, and it is supposed to be a direct replacement (as I recall, I called the company and asked a tech): http://parts.digikey.com/1/parts/756919-relay-dpdt-2a-5v-50-ohm-coil-g5v-2-dc5.html This only helped get rid of what I call "the crackle" noise. I should mention however, that my CZ also has a very high noise floor... it hisses. I know there are a number of posts on this forum about this, but I have not yet read up on it myself... need to get around to it someday. I don't really remember the posts exactly, but for a number of people (I think with hissing noise), the relay was not the problem, it was something else. The point is, if your problem is the "hiss", then I don't think this will help. but if it is the "crackle," then change the relay. As for where it is... I remember it being right up on top - easy to get to. The part looks like a (relatively) big, rectangular box I had some trouble figuring out how to open the case... I think I detail that all in my early posts as well... just search my user name. Now I need to get to my hiss problem... :) best - DT --- In CZsynth@yahoogroups.com, "fab8soul" <stein.berlin@...> wrote:
> > Hi everyone, > > after having read through the variuos posts in this forum, > I am pretty sure that I have this "classical" relay problem. > > In theory I understand what needs to be done, but where can I find the relays? How can I indentify them as such? How do I bypass? > > The synth works otherwise and I could get some really great sounds out of it - would be great to get it to work properly again! > > Thanks for your help! >
2012-01-06 by Gordon JC Pearce
On Fri, 06 Jan 2012 09:28:33 -0000 "fab8soul" <stein.berlin@...> wrote: > Next question would be whether I should replace these relays or bypass them... and how would I do that? (I am not too bad at soldering) If it's the same as the relay in the CZ1000, then all it does is mute out the audio for a second or two so it doesn't make a horrible noise through your amp. You could bypass it if you remember to knock the input gain down before turning the CZ on ;-) -- Gordon JC Pearce MM0YEQ <gordonjcp@...>
2012-01-06 by fab8soul
THANKS a lot! For me it is definitely the crackle noise and low volume. I did see your posting about how to open the CZ... I think I can do it now! Good luck with solving your hissing problem, I think it is a great synth and I can't wait to play around with it :-)!!! All the best, Fab --- In CZsynth@yahoogroups.com, "scituate_mass" <sneakyflute@...> wrote:
> > Hi Fab8, > > I used the part mentioned in my earlier post here: > > http://launch.groups.yahoo.com/group/CZsynth/message/4468 > > This is the part, and it is supposed to be a direct replacement (as I recall, I called the company and asked a tech): > > http://parts.digikey.com/1/parts/756919-relay-dpdt-2a-5v-50-ohm-coil-g5v-2-dc5.html > > This only helped get rid of what I call "the crackle" noise. I should mention however, that my CZ also has a very high noise floor... it hisses. I know there are a number of posts on this forum about this, but I have not yet read up on it myself... need to get around to it someday. I don't really remember the posts exactly, but for a number of people (I think with hissing noise), the relay was not the problem, it was something else. The point is, if your problem is the "hiss", then I don't think this will help. but if it is the "crackle," then change the relay. > > As for where it is... I remember it being right up on top - easy to get to. The part looks like a (relatively) big, rectangular box I had some trouble figuring out how to open the case... I think I detail that all in my early posts as well... just search my user name. > > Now I need to get to my hiss problem... :) > > best - DT > > > > > > --- In CZsynth@yahoogroups.com, "fab8soul" <stein.berlin@> wrote: > > > > Hi everyone, > > > > after having read through the variuos posts in this forum, > > I am pretty sure that I have this "classical" relay problem. > > > > In theory I understand what needs to be done, but where can I find the relays? How can I indentify them as such? How do I bypass? > > > > The synth works otherwise and I could get some really great sounds out of it - would be great to get it to work properly again! > > > > Thanks for your help! > > >
2012-01-07 by fab8soul
Thanks Gordon! I am off to the electronics shop :-) --- In CZsynth@yahoogroups.com, Gordon JC Pearce <gordon@...> wrote:
> > On Fri, 06 Jan 2012 09:28:33 -0000 > "fab8soul" <stein.berlin@...> wrote: > > > Next question would be whether I should replace these relays or bypass them... and how would I do that? (I am not too bad at soldering) > > If it's the same as the relay in the CZ1000, then all it does is mute out the audio for a second or two so it doesn't make a horrible noise through your amp. You could bypass it if you remember to knock the input gain down before turning the CZ on ;-) > > -- > Gordon JC Pearce MM0YEQ <gordonjcp@...> >