Answered Printer motors and heating are malfunctioning

What are the exact symptoms? No one here can divine the problem when all it says is X isn't working? Please elaborate and include all details no matter how minor and what you have done to resolve the issues so we can give you a better chance at resolving them.

 

X is either a stepper motor, a stepper driver or the RAMPS (or wiring between any of those). Nothing magic.

 

Slow heating may be a weak power supply rail. It may read 12V with no load but when you put a load on it it may not be able to deliver the up to 11 AMPS the RAMPS board can allow for the heated bed. It could be an improperly defined thermistor comparing its resistance to the wrong look up table. Too many variables.

 

As a test disconnect the connection directly on the X stepper and move it to another stepper (Y would work) and then fire everything up and try to move the X (which would really move the Y in my example). If the Y motor steps then you have solved that issue -- it must be a bad stepper. If the Y motor does not step then work you way up the list.

 

There is a stepper driver on the RAMPS, yes ... that could be bad. Or the RAMPS itself could be bad. I would suspect the stepper driver first. Swap stepper drivers from one axis to another (take the Y driver card and move it to the X and then see of the motor responds)

 

I wasn't suggesting you verify the wire, that test was to eliminate the stepper motor.

 

It probably is the driver, might need a simple adjustment or it might be a bad driver.

 

"Once you eliminate the impossible, whatever remains, no matter how improbable, must be the truth." - Arthur Conan Doyle

 

It may be just an adjustment on that particular stepper driver. Do you have a volt meter?
https://www.youtube.com/results?search_query=adjusting+stepper+driver+potentiometers

 

If he actually took the output from that driver and drove another stepper (on say the Y axis) then that is less likely.
Still a valid check, but less likely to be the issue. Sure, one stepper might need a bit more juice than another, but not enough difference to totally fail I wouldn't think.

 

You said what's left is the improbable.

 

Just to be safe, reflash the firmware. I have seen flashable memory that would not flash properly if only flashed once. This is definitely most likely not it, but it would make me feel better to know you got a good flash.