Missed the one for 9 grand.
--- On Sun, 3/25/12, james devero <j.devero@...> wrote:
From: james devero <j.devero@...>
Subject: [yamahacs80] CS 80's (2) on Ebay
To: yamahacs80@yahoogroups.com
Date: Sunday, March 25, 2012, 5:07 PM
$12 to $15 large.....Two for sale right now. Interesting.
--- On Sun, 3/25/12, Mike <mborish_2000@...> wrote:
From: Mike <mborish_2000@...>
Subject: [yamahacs80] Re: I hope this is something simple...
To: yamahacs80@yahoogroups.com
Date: Sunday, March 25, 2012, 11:44 AM
There's a lot that can go wrong. I suggest that you find a competent technician. Do not turn it on again unless you know what you are doing. If you are in Chicago I can help.
-Mike
312-363-7286
--- In yamahacs80@yahoogroups.com, "Ray Toler" <Ray@...> wrote:
>
> Greetings all. I finally acquired a CS-80 last week and have been enjoying it immensely. Today, I tackled tuning it up and that went very well well. I did not raise the card rack to do the tuning.
>
> The next issue I wanted to tackle was some wonkyness with the aftertouch. The scaling on voice 4 was way off. It would jump straight to maximum volume and filter, but the modulation rate was much slower than any of the other voices. I decided to try calibrating the TRG cards in the hopes it was just that and not the TKC or TSB boards.
>
> Upon inspecting the TRG cards, I decided I probably needed access to the bottom of the card rack, so I removed the screws and raised it. Here's the bad part. I didn't turn the power off, thinking that since it would be adjusted with the rack up, it didn't matter. Obviously a mistake in hindsight.
>
> As I got near the locking position, the left side slipped down just a bit. I think I put minor pressure on the cable bundle over the lowest group of key switches with the heel of my hand, but I'm not sure. I heard a couple of higher register notes sound with some "pitch bend" to them, then they stopped. It was maybe 1 second of sound. I got the rack up and locked with no further problems.
>
> But now there's no sound. The board powers up with no problem, the patch select buttons all light up, I hear the same transformer hum, as before but I can't get any voices to sound. I've inspected all of the wire connections on the card rack and near the key switches and can't find anything that looks broken or out of place. I don't know what to do next and am feeling pretty sick about the whole thing.
>
> I'm hoping that this is something very simple (e.g., "put the card rack down, you idiot") or something reasonably simple (e.g., "you fried the SH board chips and welcome to solderville"). I'm going to power it off for the night and see if it's just mad at me.
>
> I've provided additional details / symptoms below in case they'll be helpful, but this may be something common. I would greatly appreciate any help or suggestions you can provide!!
>
> Ray
>
> Additional Symptoms and things I've done / noticed:
>
> 1. I've put the rack back down and closed the lid.
> 2. I've verified that all patch buttons light up correctly.
> 3. With the volume at full max, and my monitors turned up reasonably high, I can hear a "voice noise" / ghost tone - extremely faint and probably a sine wave. I've observed the following additional things with regard to that.
>
> ∗ The sliders and switches for voices I and II have no effect on the tone.
> ∗ The patch select buttons have no effect on the tone.
> ∗ I can tell that the detune slider is detuning channel II
> ∗ The ring modulator appears to be working on this "ghost tone" but is very faint
> ∗ The sub oscillator section has no effect on the tone
> ∗ Changing the Feet setting works correctly on the tone.
> ∗ The after touch section ∗does∗ work on the tone, but it's like aftertouch is always present. Pressing a key doesn't change the modulation further.
> ∗ Moving the keyboard Brilliance and Level controls makes the pitch of the tone go up and down (up when slider moves up, down when it moves toward keys.) Each slider can change the tone individually, but the range isn't as big as when moving all four together. Setting them equally opposite (e.g., 2 up, 2 down) results in no pitch change.
>
> Thanks again for any help or pointers you can provide.
>
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