Synth-DIY Yahoo! Groups Archives

Advice needed

2005-07-11 by Wavecomputer360

Hi all,

first of all, how can I access the archives? Anytime I try to log in, Yahoo refuses to know me. Strange.

Secondly, I´m planning to have my tech go through my CS-80. There are some minor calibrations needed like checking the power supply for correct voltages, adjusting a couple of voice boards in channel one for tracking, realigning the Chorus/Tremolo input, etc. Are there some resources on the web where I can find detailed info how to do this (other than Crow´s CS-80 tuning caveats)? I would very much appreciate if someone compiled an updated tuning procedure that avoided those flaws in the Yamaha manual. What about a CS-80 overhaul video 8-)?

Being located in German, it would be rather hard to have Ken Spong go through my unit (although I´d love to have him do the repair). Hence I´ll have to talk my tech into fixing those little buggers (and being very reluctant to do so, I have to give him as detailed info as possible).

Thanks,

Stephen.

"Human beings are a disease, the cancer of this planet, you´re a plague. And we are the cure." (Agent Smith)

Visit the official [´ramp] website at www.doombient.com

Re: [yamahacs80] Advice needed

2005-07-11 by david@therogoffs.com

> first of all, how can I access the archives? Anytime I try to log in, Yahoo
> refuses to know me. Strange.

You should just click on Messages. Are you logged into Yahoo? It asks me about every 15 minutes to log in again!

>
> Secondly, I�m planning to have my tech go through my CS-80. There are som
> e minor calibrations needed like checking the power supply for correct volt
> ages, adjusting a couple of voice boards in channel one for tracking, reali
> gning the Chorus/Tremolo input, etc. Are there some resources on the web wh
> ere I can find detailed info how to do this (other than Crow�s CS-80 tun

i> ng caveats)? I would very much appreciate if someone compiled an updated tu

> ning procedure that avoided those flaws in the Yamaha manual. What about a
> CS-80 overhaul video 8-)?

I think the Yamaha calibration procedures, with Crow's warnings, should work fine. If it's mostly ok, with only a couple of boards out of alignment, you may not want to touch the power supply, since that will likely make you have to re-calibrate all the boards.

>
> Being located in German, it would be rather hard to have Ken Spong go throu
> gh my unit (although I�d love to have him do the repair). Hence I�ll ha
> ve to talk my tech into fixing those little buggers (and being very relucta
> nt to do so, I have to give him as detailed info as possible).

It's not that bad! The rumours have built up so much about CS-80 instability and difficulty in tuning that people think it's like preparing for a space shuttle launch! If you only have some minor issues with a couple of voices, it shouldn't be too much work to correct. The CS-80 is really easy to open up and the whole card frame lifts up for service. You just have to get familiar with where the boards are (there's a label inside the case), and make sure you're triggering the right voice card.

David