printer story: starting with the bad pulleys, got replacements end February–works now fine, first Print was ok–install the second extruder–start printing-- While the Printer was working, the printer got trouble-- some smoke was comming out from the mainboard, near the X-axis Motor driver modul.
Some red LED are on, I removed all driver Modules and all connection going to motors etc, means minimal configuration.
The display light was only on, nothing to see, also the Powerregulator 15V to 5 Volt ( L7805) on the mainboard was heating up, the output voltage drops down from 5 Volt to 2.5 Volt in a short time, looking like something shorted behind.
Yesterday I got the mainboard ( warranty) back.
Installing only with Power und LCD Flatcable— Result no Text on the screen, connect all cables, repower —about the same-- I saw with low contrast ( doesn’t matter the contrast adjust, only nothing or very low contrast) the boot screen with VERTEX on the screen and PRINTER READY ( but on a different Position-- not like normal),
Blind I can use the Switch to initialise the printer-- runs in the normal homepositiom, but on the display I got some strange letters like %&?&%%$!§"§§-- some with normal contrast-- but nothing correct written.
With USB connection I got only the backlight and no USB connection with USB port- the PC see nothing on USB.
Today I will remove the LCD and will check the Flatcable connections and soldering, but all was working until the mainboard died.
Annother think I can check?
My last check was to runn the mainboard without driver boards, only power and display and reset button–Reset is working on mainboard and LCD, but still not full LCD function.
I am not happy about this Printer history