Vintage Synth Repair

I just acquired an EP-7 digital piano.  Overall does
what it's supposed to do, but two keys will only sound
when struck quite vigorously - and then, of course,
they're LOUD.

I'm hoping this is a simple case of contacts needing
some cleaning.  Am I on the right track?  Are these
metal contacts or some sort of conductive rubber? 
Appreciate advice on recommended cleaning chemicals.

I'm experienced at doing electronic repair, but not a
controller for a keyboard.

Thanks in advance....

WCB Dave


	
		
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hi,
i bought an alpha juno 1 about 3 months ago and i had
a similar problem. one of the keys would not play
(regardless of how hard i struck it). what i did was
cafefully take unscrew the bottom of the synth and i
was able to dislodge the malfuncting key. upon taking
it out i wiped off the key's and the internal
hardware's cotact. this worked perfectly for me. if
you need any further explenation of anything else.
tell me.
tom

--- Dave Penniless <westcoastbroke@...> wrote:
> I just acquired an EP-7 digital piano.  Overall does
> what it's supposed to do, but two keys will only
> sound
> when struck quite vigorously - and then, of course,
> they're LOUD.
> 
> I'm hoping this is a simple case of contacts needing
> some cleaning.  Am I on the right track?  Are these
> metal contacts or some sort of conductive rubber? 
> Appreciate advice on recommended cleaning chemicals.
> 
> I'm experienced at doing electronic repair, but not
> a
> controller for a keyboard.
> 
> Thanks in advance....
> 
> WCB Dave
> 
> 
> 	
> 		
> __________________________________
> Do you Yahoo!?
> Win a $20,000 Career Makeover at Yahoo! HotJobs  
> http://hotjobs.sweepstakes.yahoo.com/careermakeover 
> 



	
		
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Tom, thanks for that.

Did you use any sort of cleaning fluid, or did you just wipe with a 
soft cloth?

Thanks..Dave

--- In vintagesynthrepair@yahoogroups.com, thomas napack 
<bad_karma_20895@y...> wrote:

> hi,
> i bought an alpha juno 1 about 3 months ago and i had
> a similar problem. one of the keys would not play
> (regardless of how hard i struck it). what i did was
> cafefully take unscrew the bottom of the synth and i
> was able to dislodge the malfuncting key. upon taking
> it out i wiped off the key's and the internal
> hardware's cotact. this worked perfectly for me. if
> you need any further explenation of anything else.
> tell me.
> tom
> 
> --- Dave Penniless <westcoastbroke@y...> wrote:
> > I just acquired an EP-7 digital piano.  Overall does
> > what it's supposed to do, but two keys will only
> > sound
> > when struck quite vigorously - and then, of course,
> > they're LOUD.
> > 
> > I'm hoping this is a simple case of contacts needing
> > some cleaning.  Am I on the right track?  Are these
> > metal contacts or some sort of conductive rubber? 
> > Appreciate advice on recommended cleaning chemicals.
> > 
> > I'm experienced at doing electronic repair, but not
> > a
> > controller for a keyboard.
> > 
> > Thanks in advance....
> > 
> > WCB Dave
> > 
> > 
> > 	
> > 		
> > __________________________________
> > Do you Yahoo!?
> > Win a $20,000 Career Makeover at Yahoo! HotJobs  
> > http://hotjobs.sweepstakes.yahoo.com/careermakeover 
> > 
> 
> 
> 
> 	
> 		
> __________________________________
> Do you Yahoo!?
> Win a $20,000 Career Makeover at Yahoo! HotJobs  
> http://hotjobs.sweepstakes.yahoo.com/careermakeover

when i cleaned my key off, i just used a piece of
toilette paper. now when i cleaned my linndrum that
was a more serious and arduous endeavor.
tom

--- westcoastbroke <westcoastbroke@...> wrote:
> Tom, thanks for that.
> 
> Did you use any sort of cleaning fluid, or did you
> just wipe with a 
> soft cloth?
> 
> Thanks..Dave
> 
> --- In vintagesynthrepair@yahoogroups.com, thomas
> napack 
> <bad_karma_20895@y...> wrote:
> > hi,
> > i bought an alpha juno 1 about 3 months ago and i
> had
> > a similar problem. one of the keys would not play
> > (regardless of how hard i struck it). what i did
> was
> > cafefully take unscrew the bottom of the synth and
> i
> > was able to dislodge the malfuncting key. upon
> taking
> > it out i wiped off the key's and the internal
> > hardware's cotact. this worked perfectly for me.
> if
> > you need any further explenation of anything else.
> > tell me.
> > tom
> > 
> > --- Dave Penniless <westcoastbroke@y...> wrote:
> > > I just acquired an EP-7 digital piano.  Overall
> does
> > > what it's supposed to do, but two keys will only
> > > sound
> > > when struck quite vigorously - and then, of
> course,
> > > they're LOUD.
> > > 
> > > I'm hoping this is a simple case of contacts
> needing
> > > some cleaning.  Am I on the right track?  Are
> these
> > > metal contacts or some sort of conductive
> rubber? 
> > > Appreciate advice on recommended cleaning
> chemicals.
> > > 
> > > I'm experienced at doing electronic repair, but
> not
> > > a
> > > controller for a keyboard.
> > > 
> > > Thanks in advance....
> > > 
> > > WCB Dave
> > > 
> > > 
> > > 	
> > > 		
> > > __________________________________
> > > Do you Yahoo!?
> > > Win a $20,000 Career Makeover at Yahoo! HotJobs 
> 
> > >
> http://hotjobs.sweepstakes.yahoo.com/careermakeover 
> > > 
> > 
> > 
> > 
> > 	
> > 		
> > __________________________________
> > Do you Yahoo!?
> > Win a $20,000 Career Makeover at Yahoo! HotJobs  
> >
> http://hotjobs.sweepstakes.yahoo.com/careermakeover
> 
> 




	
		
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