I experienced some problems with my Rostock V2 when I blew a fuse due to shorting out the thermistor. I replaced it and I had problems with the hotend getting plugged, then the extruder stopped working. I ordered a new extruder motor and it still does not work.
-The 3 stepper motors on the tower work fine as does the fan control. I note that there is a flashing set?? of yellow LEDs marked T and R not sure what that means.
Any help?? Printer ran really well before this now I am getting frustrated.