[Noisebridge-discuss] Repairing a digital piano?

jim jim at well.com
Fri Nov 22 03:00:23 UTC 2013


I'm willing to help out. How to proceed? 



On Thu, 2013-11-21 at 18:51 -0800, Jeffrey Carl Faden wrote:
> 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.
> 
> 
> Jeffrey
> 
> 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
>         
>         > _______________________________________________
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>         > Noisebridge-discuss at lists.noisebridge.net
>         >
>         https://www.noisebridge.net/mailman/listinfo/noisebridge-discuss
>         
>         
> 
> 




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