Re: Roland E-20 synthesiser keyboard
- From: Andrew Erickson <gmavt@xxxxxxxxxxxxxxxxxxxxxx>
- Date: Sat, 17 Jan 2009 17:37:39 -0500
In article <%Arcl.252712$XB5.12137@xxxxxxxxxxxxx>,
"Roy" <rladdressinvalid@xxxxxxxxxxxxxxxx> wrote:
Hi, I wonder if anyone can help me with this. Two of the keys do not produce
any sound and one of the keys (approximately in the middle) seems to be
sticking up about 8 mm proud of the other keys. Although I am from an
electronics background (TVand Video servicing) I have never had any dealings
with one of these before. If anyone can point me in the right direction for
a workshop service manual or has any tips I would really appreciate it!
I'm not familiar at all with this specific model, but from your
description it certainly sounds like some mechanical damage to or
maladjustment of the keyboard assembly. Disassembly and inspection
should eventually reveal what the problem is, and likely also if it is
feasible to make/invent a repair or not.
The electronics almost certainly uses some form of matrixed scanning of
the keys to then digitally activate the sounds, perhaps in octave or
half octave increments, so the actual electronic core would seem to be
perfectly OK and the problems lie only in the keyboard mechanism itself
or its interconnection to the "brain."
Good luck.
--
Andrew Erickson
"He is no fool who gives what he cannot keep to gain that which he cannot
lose." -- Jim Elliot
.
- References:
- Roland E-20 synthesiser keyboard
- From: Roy
- Roland E-20 synthesiser keyboard
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