I am looking for replacement rotary encoders for my Yamaha A4000 sampler. These samplers have a common problem where the encoders start to work poorly after time. It is Yamaha part number V4441800, which is Alps Alpine part number EC11B1524209, according to the service manual.
I found some info about the Alps EC11B series https://www.farnell.com/datasheets/1837001.pdf
This is the service manual: https://www.mediafire.com/?judihzdj4jt
Places like Mouser sell EC11B series encoders with no minimum order required, for about 5 USD/piece, but I don't know what to look for, to be able to find a suitable replacement. I just need a part that will let me select and scroll through menus, enter data, move values up/down, etc, on the sampler.
I understand I need a 11mm size horizontal-type encoder with a momentary push-on switch, with a shaft that won't be too short. Does the number of detents, pulses, or resolution matter? Does the brand matter? Is the pinout the same/universal on all encoders? If I choose the wrong encoder, can I damage the sampler? What else do I look for?
Edit: I measured about 0.5mm of push-in travel
Edit: Here are some pictures, please let me know if they don't work: