Which rotary encoder is this ?

[Kingpin]

Hello,
I'm looking for a replacement encoder but can't find the right part number.
Does anyone know which type this is:
Thanks

[Kingpin]

Belongs to a GeneralMusic WK4 keyboard.
Found a partnr 110254

[Twoflower]

As they are 'only' behave like two switches that opens close in a specific manner you probably don't need the exact part. As the decoder obviously was connected via wires helps a lot. That means only the the number of detents, the axis type/length and the mounting option is important.

Eventually you'll find a replacement here: https://tech.alpsalpine.com/prod/e/html/encoder/incremental/ec12e/ec12e_list.html . They are all intended for PCB mounting, but some have a thread as well.

[Kingpin]

Thanks.
Found out is has 24 detents and a schematic:

[Twoflower]

Purely guessing on the dimensions here, this one looks like a matching candidate: https://tech.alpsalpine.com/prod/e/html/encoder/incremental/ec12e/ec12e2420801.html

But you should go through the specifications if that one will do for you. For example the original part has a pin to prevent rotation of the encoder itself. The Alps does not have that, but a flatted thread. So you might need a special washer that holds into the flattened thread and provide the pin that goes into the front panel.

[Kingpin]

Thanks !
I think this is the direction I'm looking for.

[tunk]

Why not take it apart - you might be able to fix it.

[Kingpin]

That's an option. But i never did.