Re: various repair topics
2011-02-23 by Quazimodo
Where did you manage to find one, David...? Cheers, TOM
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Rép. : [yamahacs80] various repair topics
2011-02-22 by François Globensky
Thank you very much David for your input Not being a tech like some of you, (i studied electronics for one year long time ago) i get lost sometimes but I
Re: various repair topics
2011-02-22 by David
... Sorry - wrong link. Try this one: http://therogoffs.com/cs80/manuals/CS80_Service_Manual/41%20-%20M%20Circuit%20Diagram.jpg
Re: [yamahacs80] Touch up paint for a CS80? New light bulb for the Preset panel?
2011-02-22 by David Rogoff
... Mike, are you talking about the gray front panel color? I had to touch up some scratches a few years ago. I got a few colors of model paints and just
various repair topics
2011-02-22 by David Rogoff
Hi all. I spent a lot of the long weekend buried in CS80 guts and thought I d share some of what I found. First, on the topic of dying chips, I had to replace
Re: My own CS-80 (was CS-80 voice PROBLEM : THE END)
2011-02-22 by Quazimodo
Hehe... that s a 0.22 cap on my schematic! Maybe that s another for David and the list of schematic inacuracies? Cheers, TOM
Re: [yamahacs80] Re: My own CS-80 (was CS-80 voice PROBLEM : THE END)
2011-02-22 by Fernando Zarone
... Thanks!!! ... Definitely. I guess there is plenty of those everywhere. ... Sorry for the typo, it is between pin 8 and ground... Ciao! ... [Non-text
Re: My own CS-80 (was CS-80 voice PROBLEM : THE END)
2011-02-22 by Quazimodo
Hi Fernando, Congratulations on fixing her...! So please can you confirm that you say this fault you just fixed on the M21 board - looks like it was a dry
Re: [yamahacs80] Re: My own CS-80 (was CS-80 voice PROBLEM : THE END)
2011-02-22 by Fernando Zarone
Dear friends, CS-80 is gorgeous, but IMHO it needs a certain ability in electronics if you don t want to get crazy and want to live happy. Moving the rack
Re: [yamahacs80] Re: My own CS-80
2011-02-22 by Max Fazio
Hi Tom Don t be so skeptical...there are spare parts and full machines from time to time on the market (a friend of mine bought , not so much time ago, some
Touch up paint for a CS80? New light bulb for the Preset panel?
2011-02-21 by Mike
Is there anybody out there that specializes in giving these things new paint jobs? Does anybody have touch up paint for a cs-80? Does anyone have an idea what
Re: My own CS-80
2011-02-21 by Quazimodo
No Max, the PSU s on both my CS80 s have been totally uprated with new caps, and IC s! I think it s just the luck of the draw - personally I don t think these
Re: [yamahacs80] Re: My own CS-80
2011-02-21 by Max Fazio
Aw, that s really painful to me,Tom! Have you found any wrong tension into the correspondent voice cards so you can locate the problem to faulty resistors or,
R: [yamahacs80] Re: My own CS-80
2011-02-21 by Quazimodo
Could be just me Max - I ve always said: if it wasnt for bad luck I d have no luck at all...! Actually, one of my 80 s has had the 4 VCO chips blow. The
Re: My own CS-80
2011-02-21 by effegee
David, I just saw your MIDI mod pics in the Photos section. Nice work! I much prefer your method as far as cosmetics go. Of course, my dream mod is to have
Re: [yamahacs80] My own CS-80
2011-02-21 by François Globensky
Welcome to you in this wonderful world of the CS, I m not a great tech wiz like some folks here but i have my own and played it for a good while. But sadly now
Re: [yamahacs80] My own CS-80
2011-02-20 by Laurie Curry
I have owned a CS80 since the early 80s.... The only problems I ever had was back in the 80 s, trying to adjust one without the knowlege and support I have
RE: [yamahacs80] RE: Re: My own CS-80
2011-02-20 by Leslie Schwartz
Dave, I appreciate the information and this is not a challenge, just an attempt to follow up. The fact that the tantalum was intended for DC bypass, appears
Re: [yamahacs80] RE: Re: My own CS-80
2011-02-20 by David Rogoff
... I haven t seen the videos, but a couple of general capacitor notes. First, pretty much no one has used tantalums in many years now. They were a way to get
Re: [yamahacs80] My own CS-80
2011-02-20 by David Rogoff
... Hi Doug. Welcome to the club! Just a quick note for now. First, I ve put in 4 Kenton MIDI kits. After the first one, I came up with my own mounting
Re: R: [yamahacs80] Re: My own CS-80
2011-02-20 by Fernando Zarone
Sorry, apologize . My last email was a mistake...
Re: R: [yamahacs80] Re: My own CS-80
2011-02-20 by Fernando Zarone
Io non mi spiego cmq come sia un voltaggio negativo, solo su quella scheda... Fernando Zarone, MD, DDS, full professor
RE: Re: My own CS-80
2011-02-20 by Leslie Schwartz
I agree that the recommendation is puzzling to me too. I would have expected that new polarized electrolytics would have been the type to use for a replacement
R: [yamahacs80] Re: My own CS-80
2011-02-20 by faxiomas@virgilio.it
Hi Tom! That s sounding new to me: all the people I know who owned or has a CS in their ballpark had very few problems with the custom iCs: if my memory serves
Re: My own CS-80
2011-02-20 by Quazimodo
I think the YouTube series of videos on saving the CS80 - by Gavin Curtis - shows those tantalum capacitors replaced with non-polarised polystyrene caps....
RE: Re: My own CS-80
2011-02-20 by Leslie Schwartz
On the specific point of tantalum IC decoupling caps, is there a consensus to avoid them, as I have heard? ... From: yamahacs80@yahoogroups.com
Re: My own CS-80
2011-02-20 by Quazimodo
Hey Max, In my CS80 s it s the custom chips that I have had the most problems with!! Up to now I have had 4 VCO chips and two VCF-EG chips blow. Many years ago
Re: [yamahacs80] My own CS-80
2011-02-20 by Csaba Zvekan
Hi Doug, Long story short : if you are pretty good with the soldering iron I would start replacing the 4000 series CMOS chips , make sockets and put additional
Re: [yamahacs80] My own CS-80
2011-02-20 by Max Fazio
Hi Effegee, welcome to the Group! So, back to the CS-80: I m somewhat concerned. With all of the reading I ve done here and on the net about replacing parts,
My own CS-80
2011-02-20 by effegee
Hi. I m new here. I just acquired a CS-80 that originally belonged to Oscar Peterson, who sold it when he put together a Synclavier system. The guy I bought
Re: CS60 as 4-voice CS80
2011-02-18 by synthparts
Well I wanted to make MY CS60 into a dual-osc design which would be a lot more interesting TO ME. I think the people you should be worried about is like the
Re: [yamahacs80] CS60 as 4-voice CS80
2011-02-17 by Wavecomputer360
I know I´m sounding like the proverbial old coot here, but why on earth would you want to slaughter a functioning CS60 just to get something which isn´t even
Re: [yamahacs80] Re: UPDATE 2! CS80 voice problem
2011-02-17 by KSR
Now look hard at the BA board and follow that thtough. ... From: papinje Sent: Wednesday, February 16, 2011 9:49 PM To: yamahacs80@yahoogroups.com Subject:
Re: UPDATE 2! CS80 voice problem
2011-02-16 by papinje
I WAS WRONG. TRIG 1 was not involved in the problem, in that after moving some wires the long sustain was back. Kent, you were right (I never had any doubt) :
Re: [yamahacs80] UPDATE!!! CS80 voice problem
2011-02-16 by Fernando Zarone
I wanted to update the CS-80 problem saga: After carefully checking hundreds of connections, I took the TRIG1 board out of the rack. There are some repair
Re: [yamahacs80] CS60 as 4-voice CS80
2011-02-16 by David Rogoff
... Hi Doug. That was sort-of my idea back in 1981! I had just started college and was a huge CS80 fan and got to play with a new one at a local music store.
CS60 as 4-voice CS80
2011-02-16 by synthparts
So I have kinda given up ever finding a CS80 for a reasonable price but I do have a couple CS60s. It occurs to me that if the CS60 could be modded so that you
Re: CS80 Service manual errors :(
2011-02-14 by Quazimodo
The only one I ever found David was also on the M board - VR18 is labelled VR8 ... so there are actually two VR8 s marked on the circuit diagram. The REAL
Re: [yamahacs80] Tolex for a CS-80 case?
2011-02-14 by Wavecomputer360
As for tolex, you might want to try a custom car shop where they use tolex for roofs etc. on stuff like a Dodge Challenger or something. Stephen ... From: Leo
Re: Tolex for a CS-80 case?
2011-02-14 by effegee
Last year I tolexed a new enclosure I had made for an Arp 2600 (moldy, water damaged case). I used tolex and a special tolex glue I bought from mojotone.com
CS80 Service manual errors :(
2011-02-14 by David
Hi all. As I continue working on a CS80 I find more errors in the service manual. I thought I d start a list and see if others have found more. And no, these
Tolex for a CS-80 case?
2011-02-14 by Leo Johns
Hi, It s about time to re-Tolex my restored CS-80 here in Kansas. Does anyone have a source - or a specification, thickness, manufacturer, etc. - for black
Re: [yamahacs80] UPDATE!!! CS80 voice problem
2011-02-14 by KSR
Check all the wires on R52 ... From: Fernando Zarone Sent: Sunday, February 13, 2011 2:26 PM To: yamahacs80@yahoogroups.com Subject: [yamahacs80] UPDATE!!!
[yamahacs80] UPDATE!!! CS80 voice problem
2011-02-13 by Fernando Zarone
Now the situation is worse (did I make a mistake or didn t I noticed it before?): All of the last 5 presets of CH II : harpsichord 2, 0rgan 2 up to funky 4
Re: [yamahacs80] CS80 voice problem
2011-02-13 by Fernando Zarone
I am getting crazy. Summary: Voice n.1 (board 21) has a problem. This should be not in the board itself, because it doesn t play ONLY when one of the CHII
Re: [yamahacs80] Welcome new (and returning) members!
2011-02-13 by Fernando Zarone
No, Stephen, I have been the owner for 5 years now, bought from a friend... Ciao! ... [Non-text portions of this message have been removed]
Re: [yamahacs80] Welcome new (and returning) members!
2011-02-13 by Max Fazio
Ciao Fernando! M ... From: Fernando Zarone To: Sent: Sunday, February 13, 2011 9:01 AM Subject: Re:
Re: [yamahacs80] Welcome new (and returning) members!
2011-02-13 by Fernando Zarone
Hello all, I have been a AH member since 1995 (now I am 52...), owner of a collection of analogue synths (Moog modulars,, Roland sys 700, EMSs, Korg PS3200,
Re: [yamahacs80]
2011-02-13 by David Rogoff
... It came through! I don t know if this is related, but several recent posts were flagged as possible spam by Yahoo, requiring me to OK them. I have to
(no subject)
2011-02-13 by Laurie Curry
Hello again.... Hopfully this post makes it.... I have received alot bounced back from Yahoo [Non-text portions of this message have been removed]