While I wait for my Juno 60 toggles I might as well tell you about my Omni 2… Here’s the first in a probably two part series.
I bought this Omni 2 off Craiglist in April 2011 for the seeming current market rate of ~$200 for one that powers up, makes most sounds correctly and has some ‘lingering’ voices. While the lingering voices are alright if your fooling around, they are a roadblock to being able to make recordings with it -which is my intention. A quick web search told me this was a common problem and not difficult, just tedious to fix -with a high success rate for machines that have basic functionality when you start.
Arp Omni 2 sandwich -the meats bigger than the bread. Source looks positively petite on it. Arp is pretty nice other than the chipped tooth -courtesy of careless TSA baggage handlers the PO told me. Note the 6 vertical panel sliders have caps -also note that each slider has a white grease pencil line -one way to store a patch!
The blow actually took out two keys. Keys are not quite level and have a bit of side to side play so I guess they could use new bushings -someday I suppose -first things first. One screw and a little careful pulling and the keys come right off.
Replacement key was a smoker -imagine what smoking a pack a day will do to your teeth. Funny no one ever asked what it did to your lungs -I guess you don’t walk around with your lungs showing. Time to whiten this key.
The whitening recipe is courtesy of retrobright. Hydrogen peroxide 10% and a pinch of Oxyclean then place under UV light -sunlight works. Two days and it’s pretty damn white. Fun. Very 8th grade science.
Sliders weren’t bad -just the usual varying degrees of resistance to movement and hair/dust stuck to decaying grease. I did the IPA soak followed by Simple Green bath followed by faucet rinse followed by distilled water rinse and a long day of sunbathing.
Not only do the sliders get cleaner -the board does too. I know- I’m cheating, the capacitors are replaced here. Just add silicon lube and the sliders will be nice(er).
Next I set up a soldering/de-soldering station -poolside of course.
Alright -this is all past tense as I did the repair -but I thought it would be interesting for those out these contemplating this repair. Up next -out with the Tantalums, in with the electrolytics.