One of the keys wasn't working on my SH-101, so I decided to open it and clean the contacts. Turned out to be harded than I expected, as one of the screws wouldn't budge.. Now I know why (see attached photo).
Anybody got a spare 101-keyboard assembly? I don't need the keys, just the metal frame and PCB. Or maybe just the PCB? Anybody?
How on earth did it get like that in the first place ?
Has you 101 been subjected to water, condensation or has something been spilt inside it. You might need to try use a rust removal product. That would be cheaper than buying another 101 just to get another keybed frame.
While that does look like a bummer it looks like it is only the metal that is damaged. If you are a handy guy and have the time that can easily be removed and either repainted or coated again and it will be as good as new provided most of the electronics are fine. A stiff wire mesh brush will take that right off. Then some fine sand paper and then paint it and it will look just fine. If you are not so handy but can remove the metal parts you can always find a local shop that can refinish the metal. Probably cheaper than a new keybed.
well I can tell you right now you need to take most if not all of the keys out to clean the contacts, mine had 2 keys which were funky and are both fine now after my repairs. The membranes are under the keys, and it's basically multiple membranes on a long rubber strip, you have to take out a bunch of keys to get the whole strip out to clean.
Considering the rust, I'd take the whole thing apart. take the springs off the keys, then pull the keys out. Take apart any remaining parts and get it down to the individual pieces, take photos if you need a reminder how to put it back together.
take the rusted metal piece, sand the worst of it down and put some rust preventing primer on it. clean/fix the key contacts, and re-assemble. If only one key is broken, it can't be THAT bad, it just looks bad from the rust.
I can say from experience (as someone once spilled water onto my 101...though not on the keys, more on the pitch bender area.), that, if something is spilled on a synth, the very first thing to do is take it apart and get q-tips and a blow drier and just proceed to dry it all off. If something sticky like soda spilled, probably best to use some rubbing alcohol too, as it will evaporate quickly. It's clear that water probably pooled on the bottom of the case, and rusted out some of the keyboard along with the bottom panel. I think even my bottom panel has a tiny hint of rust (from before I even owned it), but not quite as bad as yours, although yours is really not THAT bad, it just looks like some water pooled there at the corner. You don't need a whole new keyboard assembly, I promise.
While that does look like a bummer it looks like it is only the metal that is damaged.
That's the thing... the upper side of the PCB (not seen in the photo), with the key contacts, has suffered damage from the corrosion and/or the damaging liquid. It's not very extensive, but couple of the resistors (those are resistors, right?) and traces look like they're damaged. The key contacts on the other hand are clean, from the rubber membranes covering them from the spillage probably.
But yeah, now that the initial shock has worn off, maybe this ain't that bad. Taking care of the rust is definitely something I can do and I guess I could take the damaged PCB to a tech to see if the damage is repairable. If it's only a broken trace and a couple of bust resistors, shouldn't be a biggie, right? But still, if someone has a spare 101 keyboard PCB, I'm interested.
Was it stored with batteries in it? I know they will leak and cause issues.
I'd try some non-conductive dry abrasives (sand paper and whatnot) Followed by some clear coat. The last thing you want is the small metal fillings from steel-wool or a wire brush to get inside. Good luck.
If it's only a broken trace and a couple of bust resistors, shouldn't be a biggie, right?
yeah, not the hugest deal in the world. You'd just have to clean the PCB, replace any parts that got damaged by the liquid, and then re-work any of the traces that got ruined. However, like I said before, if it's only one key not working, i can't imagine the damage is that extensive.
there's both some diodes and resistors on that board, fwiw. I can't recall what the top-side looks like off hand though, so I can't tell you exactly what they are, but they're cheap and easy to fix either way!
Isn't that the same thing that paper and wood is made out of?
the 303/606 are probably most famous for their cellulose boards getting damaged. Don't ever smash in the volume/tempo/mode knobs on one of them or you'll find out yourself....it's also fairly easy for traces to lift off these boards as well, so i guess maybe it's not super surprising the rust destroyed a trace. Still, this rust damage should be a lot more easy to fix than a cracked board.
I would send it to a tech unless you are familiar yourself. My guess is it will be fairly simple fix to someone experienced.
J/C did you just get it and it malfunctioned? Or did it all of a sudden not work properly?
This happened once to a mixing board and turned out my cat took a leak on it!
You never know what you'll find openeing up this stuff. I've seen it all, spilled whatever, insects, insect nests....
I would get a case for your 101 asap!
Best of luck.
Spilled beer...This is insane how people ill-treat these collectors. Same as ashes in keys (for smokers), or breadcrumbs.
They are musical instruments, not the Turin Shroud. Accidents happen. Stuff gets used. It is a cheep Roland monosynth FFS. No need to handle it with cotton gloves.
Originally Posted by Carey M
No no, the battery compartment is perfectly clean, I'd put my money on spilled beer. On closer examination of the bottom metal panel I noticed that a previous owner had just painted over the rust...
No way that beer would do that. Liquid spills tend to short out the electronics, and if that doesn't happen, they will dry out leaving some kind of residue, not acid.
The metal has to be either wet for an extended period (stored in a cellar on it's end in a puddle). or it is battery corrosion. My money is on the battery. The battery compartment is plastic, and will not corrode, and can be wiped down. The battery goo will have seeped down into the bottom of the insides, and done that damage.