Hello Mathias,
I do not have had to deal with problems in my expression pedal,
but I have some ideas how it works (I'm a tech guy) I would lend
you a hand.
The mechanism has 3 parts.
1.- A lighting device (the bulb)
2.- A Light obstruction mechanism
3.- A photo resistor cell
The plug has 3 terminals. One is common, the other is the lamp
power source and the last is the variable resistance that modify
the volume.
If you do not see a light even in the pedal assembled, there is
something wrong, lamp or power.
If you open the pedal you will have the chance to check what is
wrong and more important make a further test.
Even if the power source of the lamp is wrong, you can allocate a
lighting device in the neighborhood of the lamp, and if move the
volume control, you will notice that it works (if everything is OK
inside the CS-80).
I do not know how skilled in electronics are you to go ahead, let
me know.
Let me tell you that I do have a CS-80 and both original pedals.
I got it in bad electronics condition from the official support of
the brand (the unit was a demo unit, never sold that fail and
could not was possible for them repair it). I could do it... it
happened about 30 years ago.
Have a nice? day!,
Gustavo.
On 2022-08-17 7:43 PM, Mathias Tjonn
wrote:
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Greetings fellow synth travelers,
?
So, I finally found an original expression pedal for my CS-80
after many years of searching...and it doesn't work. I
understand there's a 24v5w bulb in there and thought perhaps it
has burned out, anyone here have any experience opening these
pedals up and replacing the bulb?
Any hints and help greatly appreciated!
Mathias
