I have a Rostock Max V2 Printer With Rambo 1.3L Control. The firmware is Repetier (not sure what version). I will describe some changes that have been made. They may not be related to my problems but may help with diagnosis.
The printer was in working order when I purchased it used. In my possesion the printer was on at idle about 20 to 30 hours, actual printing time maybe 3 to 4 hours. Then I noticed the hotend was not heating properly. One resistor had burned up.
First the changes. Replaced hot end resistors, they were bad. After doing this the power supply would overload and have to be turned off and back on in order to get power back to the printer. This problem was random and intermitent. I asumed that something was now wrong with the old power supply. I am now running a 24 vdc power supply to the hot bed and steppers. the logic, fans, and heaters are being run from the same 24 vdc power supply to a dc to dc transformer that is set to reduce the the volatge to 12 volts.
Here a couple of problems I am now having. Please keep in mind that I was not experiencing the following duiring my first hours uf use.
Sorry, the first one is kind of wordy. Not sure how else to best describe what is happening
1. I am using Matter Control (printer control software) whith this I am able create macro buttons to aid in calibrating my rostock. The X,Y, and Z buttons move the end effector toward the XY, or Z tower to specified destination in the machines X,Y or Z axis. The Bed Center button moves the end effector to the center of the bed and to aspecified Zaxis point. Aslo I have added a Home All button. While recalibrating the machine (I have done this before with no problem). After pressing the XY or Z macro button and waiting for printer to stop then pressing the Bed Center macro button the printer moves to the XY or Z destination that it was at previously. Example pressing the Z macro button, printer moves to Z tower after motion has stopped I press the Bed Center macro button the printer heads back towards the Z tower macro destination. The Home All Macro will clear this error. The Home Towers button on the LCD seems to clear this as well.
2 Another problem is not being able to auto calibrate the heat bed or send temperature adjustments thru g code. I am still able to turn on and make adjustments with the LCD.
Any thoughts on either problem are appreciated. To me somehow they are related.
Thank you for your patience in getting thru all of this.