Two encoders are showing similar behavior as shown here.
But I do not have spare encoders. I have fond this on the ebay.
The part number is 260-2791-00. Edit: no, it is part number with detents, the ones on the pic does not have detents, therefore must have different p/n. But look same.
My question - would I be able to repair existing encoders? What do we expect to find inside the assembly? I am sure I can open the body (hopefully the deal is in cleaning), but if it has set of small springs inside I am afraid to lose or damage them or be unable to assemble them back properly.
Anyone had experience with such devices?
Edit: found this one, will try to repair, we'll see.
Update: desoldered two encoders, opened them to find out that are heavily greased.
I can't get what do to with the grease: this says to apply it back (onto contacts?), this and this say no grease on the contacts (this is also what I would do). Does it really need a grease on the contacts, or needs only on rotating parts? I would prefer putting the whole stuff into the spirit, clean everything and then apply grease only to the friction plastic surfaces.
Final update: I found this excellent post and decided not to proceed further. Using small screwdriver redistributed grease on the surface, slightly bent wiper contacts up, and assembled everything. We'll see tomorrow if it still works...
Final update 2: after installation and assembly scope still functions :) and the knobs behave slightly better than before, but sometimes still erroneous. Conclusion - these encoders must be replaced.
