Failed servo/ encoder help

[Bongo]

update. I've got the encoder casing off and it is a Tamagawa encoder TS5563N1. I can't see anything obviously wrong, so am a bit stumped. Any suggestions? The encoder itself isn't coming off the motor easily. It's held onto the motor body with some very small fastenings that have been liberally glued in place.

[routercnc]

If you have access to an oscilloscope and make some breakout leads between the encoder and the driver you might be able to check what is happening. By this I mean intercept the encoder wires while it is connected to the driver. I would guess there is at least power, ground and probably 2 pulse trains (slightly out of sync with each other depending on the direction of rotation). Maybe a google search will tell you the pin outs, plus if it is incremental or absolute encoder.

Or perhaps you could figure out the wiring by arranging a breakout connection from a known working encoder to a driver. But this would only confirm that it had stopped working. Then it’s a decision on whether to buy another motor with encoder, or hunt around for a compatible encoder if they are sold separately.

Without a scope, assuming you know which are the pulse train pins and ground you could connect a multimeter and check the RMS Voltage of a pulse train at different motor speeds. The values would not mean much but a reading would increase or decrease with speed.