[Noisebridge-discuss] Repairing a digital piano?

Jeffrey Carl Faden jeffreyatw at gmail.com
Fri Nov 22 02:51:33 UTC 2013

I took the piano apart just now, and it seems that the power jack has
broken off from the mainboard (pardon any terminology issues; I don't know
what I'm doing). I don't think it's anything as serious as an IC failure or
improper PSU polarity.

I believe what's actually necessary is just a safe removal (unplugging
wires from the control panel, power switch, and keys) and a re-solder of
the power jack onto its proper place. I don't feel confident in performing
this repair, but possibly someone else does.

Jim, or anyone else who's interested, who'd like to take a gander at the
insides of a digital piano and perform a small repair? I live in Hayes
Valley, and I have a soldering kit at home already (but only Elmer's
glue... maybe I should get a hot glue gun). I can pay something reasonable
if applicable.


On Thu, Nov 21, 2013 at 12:06 PM, jim <jim at well.com> wrote:

>     Are you willing to take the thing
> apart to the extent that you risk
> ultimate repair?
>     I'm willing to come to where it
> is, and would gladly share inspection
> with others who may be interested.
>     Without knowing, the problems
> likely involve a diode bridge, a
> storage-filter cap, a resistor.
>     It's possible that some part of
> an IC has failed, and to remedy that
> requires replacing the IC (or, more
> creatively, learn how the internal
> circuitry works and determine if
> one can strap new, compensating
> circuitry around the IC, not likely).
> On Thu, 2013-11-21 at 11:05 -0800, Jeffrey Carl Faden wrote:
> > I've got a heavy, 88-key Korg SP-100 digital piano that's been sitting
> > in my living room without power for a few years. What I originally
> > thought was something wrong with its AC adaptor (since replaced) is
> > now probably an actual internal problem where it receives power.
> >
> >
> > I don't want to bring this hulking thing to Noisebridge, so I'm
> > instead looking for recommendations for repairs of this type.
> > Preferrably some repairperson who could come, take the thing apart,
> > gauge what's wrong, and get replacement parts if necessary. Anyone
> > know of a good service? Anyone looking to provide their own services?
> >
> >
> > Jeffrey
> > _______________________________________________
> > Noisebridge-discuss mailing list
> > Noisebridge-discuss at lists.noisebridge.net
> > https://www.noisebridge.net/mailman/listinfo/noisebridge-discuss
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.noisebridge.net/pipermail/noisebridge-discuss/attachments/20131121/65ea2725/attachment.html>

More information about the Noisebridge-discuss mailing list