Re: [Finale] OT-Non-responsive MIDI keys

2005-03-01 Thread Eden - Lawrence D.
Yes.  Go to Radio Shack and find a spray can of Color TV Tuner Cleaner.
I have used that spray to take the static out of volume controls on my
stereo and to clean and lube a few of the keys on an old computer.




On Mon, 28 Feb 2005, Henry Howey wrote:

 A couple of keys on my EDIROL PCR-31 keyboard are not making a
 circuit. Is there a spray or other means to (I assume) de-oxidize the
 contacts for a better response?
 --
 Henry Howey, D.M.A.
 Professor of Music
 Sam Houston State University
 Box 2208
 Huntsville, TX  77341
 (936) 294-1364
 http://www.shsu.edu/~music/faculty/howey.html
 Owner of FINALE Discussion List





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[Finale] OT-Non-responsive MIDI keys

2005-02-28 Thread Henry Howey
A couple of keys on my EDIROL PCR-31 keyboard are not making a 
circuit. Is there a spray or other means to (I assume) de-oxidize the 
contacts for a better response?
--
Henry Howey, D.M.A.
Professor of Music
Sam Houston State University
Box 2208
Huntsville, TX  77341
(936) 294-1364
http://www.shsu.edu/~music/faculty/howey.html
Owner of FINALE Discussion List



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Re: [Finale] OT-Non-responsive MIDI keys

2005-02-28 Thread Christopher Smith
On Feb 28, 2005, at 10:11 AM, Henry Howey wrote:
A couple of keys on my EDIROL PCR-31 keyboard are not making a 
circuit. Is there a spray or other means to (I assume) de-oxidize the 
contacts for a better response?
--

I don't know what kind of key contacts are on the Edirol, but there are 
two basic kinds: metal leaf switches and rubber domes. If yours has 
metal leaf switches, then a spray contact cleaner (available at any 
electronics store) may work. You would have to open it up to expose the 
contacts, which may be quite a job. If you have rubber dome switches, 
the spray will not only not do any good, but will accelerate the decay 
of the rubber and might make a whole section inoperable.

It's possible that the problem is electronic, rather than mechanical. 
There is a pattern to how the keys are laid out in the circuit board, 
and if a number of keys stopped working at the same time (even ones 
that are not adjacent) then perhaps a diode somewhere went south on 
you, or there is a broken solder joint. I'm handy with a solder gun and 
volt-ohm-milliammeter, but this one would be beyond me. Experts only at 
this point.

Christopher
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