Hello,
I bought my Juno 60 new in 1983 and it’s beautiful. Unfortunately, it has been sitting in my music room for the last 20 years with little use. So the keys a bit wonky - not always triggering properly and sometimes retriggering when the key was let up. I disassembled the keyboard completely, cleaned and reassembled it. Now that part is working fine.
However, I found that some of the switches and buttons are not up to snuff. The arpeggio button has to be pressed a few times to make it work. And the octave transpose switch is a bit sluggish.
So I’m wondering if they can be cleaned. I use Deoxit on switches and Deoxit Fade spray for pots and sliders. They have always worked great. But if the buttons are sealed they will have no effect. I think the switches are open enough get clean - seems to have worked.
Anybody tried cleaning the buttons?
As far as I remember right, one has to press the shaft of the switch down and then should spray into the slot of the shaft. I was successful by simply pressing the buttons over and over (maybe 50 times). That removed the oxidation on the contacts too.
Hello!
Be careful using DeOxit on any of the momentary switches in the Juno-60. Inside the switches, there are mini rubber contacts, and DeOxit will ruin them! They’ll no longer conduct. There’s a company in California that makes a 3D printed replacement that uses standard tactile switches. Then you reuse the original plastic caps on the Juno. After they’re installed, it looks the same, but the new switches click.
You can carefully open the original switches to access the little rubber contacts. You might be able to clean them with soap and water and a little alcohol, if they’re dirty. If they’re worn down, you can try some CaiKote 44 (made by same company as DeOxit) but in my experience, that doesn’t last very long. I’ve even seen where the painted Caikote can fall off the rubber contact causing a dead short in the switch.
I hope this helps!
Mike
Thanks! Don’t want to destroy anything.
What about Deoxit Fader cleaner? It’s supposed to be kind to plastic parts, etc.
I ordered a new button, so if I’d this one goes kaput I will have a replacement.
That might be even worse, honestly! It’s DeOxit + lubrication for faders in that formula.
So, there’s nothing to be done for dirty contacts? 90% isopropyl alcohol?
So replacement is about that’s sure. Hmm. Well that’s what I’ll do.
Btw, is Deoxit Fader cleaner good for faders? Or, the sliders on a Juno? I used it on my Akai midi keyboard a couple of years ago with good results.
Yeah, you can clean those momentary switches. You might have to remove the panel PCB, but first you pop off the switch caps. Then each switch has two plastic parts locked together. Those two pieces have to be separated. You can squeeze the bottom half of the switch on the opposite side of the “latches”, and the top should be able to remove. Inside, there’s a little sponge, and a bluish grey rubber contact. You can clean that rubber piece with soap and water, and a light swab with a alcohol soaked q-tip after it dries. Then clean other part of the switch with alcohol and a q-tip. After everything dries, hopefully all better! If it’s still bad, you’ll probably need to replace.
Yes, DeOxit fader is okay on faders and pots. Also, forced air and alcohol are good to clean off the faders before adding DeOxit.
I hope this helps!
Yes, that certainly does help. Thank you!