Hi,
While using my machine today, the y-axis suddenly stopped working. On further investigation, I found that the 5A fuse to the y-axis G201 driver had blown. I replaced the fuse, but it blew again as soon as I turned on the power. Having read the FAQ in this forum, I measured the resistance between terminal 1 and terminals 3, 4, 5 and 6. Sure enough, the resistance between terminal 1 and 6, and also between terminal 2 and 6, is 0 ohms. This points towards a blown MOSFET, according to the FAQ.
I measured the voltage going to the G201s (three in total) in my enclosure, and it is sitting at 66V. The y-axis stepper motor is not at fault, as this still works fine when connected to one of the other two G201s. The other two G201s are still working fine (all three are wired the same with the same motors).
I have had the whole system up and running for about 2 months now, and up until today, everything was working flawlessly. As is so often the case, this couldn't have happened at a worse time, as not only has it written off about 4 hours of work, but it looks like it's going to put the machine out of action for a week or two - just when I really need it.
Now for the questions:
1) What is the typical procedure to have one of these things repaired? Although I've only been using them for about 2 months, they sat in a cupboard for about 2 years before this, so I guess my 1 year warranty is up (a little irritating...).
2) What typically causes one of these drives to fail? I'm reasonably confident that it is not the power supply or wiring. I'm a little concerned that one of the others may also go - not something I would have expected from these products (at least not before my y-axis failed). This problem can't be that uncommon, given that it appears in the FAQ.
Thanks in advance for any help
Warren