[sdiy] U-20 questions

[Tony Kalomiris]

Hi Tim,

I have a U-20 here with 'dead' keys problem too, except it doesn't respond 
even over MIDI.
Only some notes in each octave (I forget which) work.I removed every key, 
spring - pain in the arse !
I washed the keys, but didn't touch the carbon pads.

I read here http://www.geocities.com/SiliconValley/Lakes/9276/ that "it's 
normal" to get a bum unit with the busted keyboard problem . . . hmm.

My version is 1.03.

Also have you had success 'initialising' the machine ? I was about to do it 
(after backing up data), but wasn't sure I'd lose the iRAM sounds.

Anyway good luck with it, I sorta gave up on this one for now.

Oh, have you tried CircuitWorks Rubber Keypad Repair Kit ? (#CW2605)

I've never tried it myself.Anybody else ?

Tony




















At 07:30 PM 6/22/2005 -0700, Tim Parkhurst wrote:

>Hi All,
>
>I love the sounds on my Roland U-20 but it has two problems:
>
>1) Funky key contacts. Many keys don't sound, or trigger a dozen times when
>you hit the key once (a really neat effect if you could turn it on and off).
>I pulled the rubber contact strips and used conductive ink to "re-plate" the
>contact pattern about two years ago. This helped a little, but now the
>problem is as bad as it ever was. Is there a better way to refurbish the
>contacts, or do I just replace the contact strips? And where do I get
>replacement contact strips? I'm just using the U-20 as a sound module right
>now, and this is a reasonable workaround, but the machine has a nice
>keyboard and I'd probably use it as my master controller if the darn thing
>worked properly.
>
>2) A Two line LCD and four buttons do NOT make a user interface!!! Are there
>any editor/librarians for the U-20 out there? I know Unisyn has a U-20
>'module' but I just don't have the $200 or so right now to spare. Any other
>choices?
>
>Thanks as always!
>
>
>Tim (more than two problems) Servo
>
>"Imagination is more important than knowledge." - Albert Einstein
>
>
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