« on: February 22, 2017, 03:00:36 PM »
My A5 laser has been working great. Recently added homing switches, belt tensionors, and a G2 lens. Order of plate PCV arrived earlier this week and decided it was time to do the job I bought the laser for. The weather is great so I hauled laser, laptop, & plastic to garage so that I might survive the fumes.
Setup with laser near door, inserted card stock do do a test cut, and absolute crap motion. Checked the usual suspects like belts and wheels being tight. All OK. Back to basement for alternate poser supply and simple tools. No difference.
Went and got a stepper motor and it worked on all the stepper motor ports. No load by as expected. Checked the stepper current limits. OK. Switched out stepper drivers. No difference.
Plugged X axis into Y driver. Crap motion on X.
Disconnected Y belt and plugged Y motor into X driver. Works as expected.
Swapped y-motor power cable to x-motor and it works. Appears I have an intermittent open in the cable. Ohms out ok until I flex it. Ordered a bunch from ebay and I may have a beer or two or three and try find and fix the fault.
Murphy is alive and well and I know his address!!!