Red "fault" light is lighting on my G540.

[john-100]

loose connections can easily cause damage to stepper drivers

when energised
the breaking of any motor connection will result in a back emf in the disconnected coil that is many times the supply voltage -
destroying the output transistors that control the current that flows through the motor coils

John

[jaru-eri]

OK, I understand!

So maybe it will be better to solder the wires from the drivers directly to the stepper wires instead of using a plug in that area in order to prevent damages like that?

[jaru-eri]

I tried another time with a new driver and this time the same happened when I turned the tuning potmeter all the way to one end in order to get rid of the ticking noise, so I believe it was the same that happened last time. Does this potmeter regulate the current or voltage in a way that can damage the driver?

[john-100]

which version of the G540 do you have ?

if its the new type as in this video
they potentiometers have a plastic body as seen at 1:27






on older versions the potentiometers are uninsulated and on the G250 boards
you have to avoid shorting the potentiometer or near by components to the case

old version of G540

old G250


John

[jaru-eri]

I have the old version without plastic body. Do you know which components it is which has been damaged? It will then be much cheaper to change some components than a whole driver.

[john-100]

unfortunately I don't have any component level details of the Gecko stepper drivers

Its a question you will have to ask Marris at Geckodrive.com

John