Hey Tom,
Like Forest Gump's mother said..."Stupid is as stupid does"....So here is where I am:
I am working on a new build....I have X-Y-Z Installed and ready to test....Or so I thought...got interrupted while I was wiring the steppers and left the wires to the X-Axis "uncovered"....when I go back to setting things up to test, mentally I had "finished wiring" the steppers...obviously two of the wires on the X-Axis stepper were touching and when I powered everything up U17 lit up like the 4th of July....I removed the charred bits of the IC and then de-soldered the leads. A few of the traces are toast, so I understand Channel-0 is permanently out of commission on this board...certainly not anyone's fault but my own.
I want to make sure it is OK to continue with the board using Channel-1/Channel-2/Channel-3 to drive my X/Y/Z. Assuming it is, are there any power traces I should "cut" to further Isolate Channel-0 from disrupting the functionality of the rest of the board? Should I de-solder the mosfets? I realize this is not an ideal situation, and once testing is complete and I am happy with the machine itself I plan to order another K-Step and another K-Flop dedicated for this machine, but for the short-term I want to finish testing and I would prefer to do so with the K-Step as the driver....I have "other drivers", but they don't perform nearly as well as the K-Step and it is the performance I really want to test....
Hunter