Can't get any of my printers to print any longer. Constant problems that seem beyond simple calibrations and adjustments.
The machines in question have between 3,000 hours and 5,000 hours printing time on them.
Do the actual Stepper Driver boards go bad? Is that a common problem?
Specifically, has anyone resolved their printing issues by replacing a Stepper Motor DRIVER?
I'm not sure if I have a bad mainboard, bad stepper motors, bad Stepper Motor Drivers or what.
It just seems as if the printers can no longer find their way and every attempt at printer (on both printers) ends up with a mess, shifted prints, over extrusion, under extrusion and a host of problems.
What I've tried so far......
Replace Power Supplies (no change)
Replace thermisters (no change)
Recalibrated extruders (no change)
Checked ALL belts for tension and gear tightness (no problems found)
Checked carriage for free movement in X and Y axes (no problems found)
Checked to be sure motors are securely mounted (no problems found)
Changed Nozzles (no change)
Changed teflon guide tubes (no change)
Check all connections on mainboard and re-tightened all connections
Re-tightened all connections on power supply
Checked and re-seated ALL connectors to LCD and control panel
Check guide rods (all seem secure with no movement in any direction)
Checked linear bearings (all seem ok)
Check for extruder obstructions that could interfere with Extruder movement (no problems found)
Leveled the print bed (about 100 times)
Changed print surface (new Kapton tape, Glass bed with Kapton tape)
As you can see, I've nearly exhaustd things to check. That's why I'm beginning to believe it's in the electronics. Such as a failing Stepper Motor Drivers.
Of course, at 3,000 plus hours it could also be failing stepper motors I suppose.
The Coils in the stepper motors all read about 7 ohms.
Once in a while, the LCD display will display trash during a print and once, the print stopped due to it.
I think this would point to a mainboard issue?