3d-printer-user

Resurrection procedure complete. Replaced the old 7812 with a switching regulator and now it´s working again. Thank you very much gr5! Hope that i can cancel my order... wrote an E-Mail.

Ok, made a few more tests now. Arduino is fine. When i disconnect the Ulticontroller and connect the Ultimaker by usb to my computer, Cura recognizes the printer and i can manually move the head and the bed. So drivers and stuff seems to be fine. What is not working is the fan, cause it´s connected to the damaged L7812CV and obviously heating is not working as well. So again: I will try to get a replacement L7812CV tomorrow morning and then we´ll see if heating comes back. Any bets?

Hey! Have you fixed this problem already? Seems that i have the same problem. My assumption is also the voltage regulator at IC1. Thanks for your reply!

Nope, Fan was not running when i powered it on. That´s why i also guessed, that something with the 12V regulator must have happend. Thanks for the hint with IC1. This guy is getting 19V on the left pin, but giving out only 0,06V on the right pin. Middle seems to be -. So: He´s dead, Jim. Will try to get a replacement by tomorrow.

1) I measured 19V, so i guess the Power Supply is not the problem. 2) Yes, have read this and checked it before i posted. No changes. 3) Yes! Yes, please tell me where i can probe so that i can test which components are dead. Maybe it´s only a voltage converter problem. They should be easy to replace. 4) Will do this later today. Haven´t had time for this yet. 5) Good old Germany. Will update my profile. 6) Can´t believe it either.

Hello everybody, i have a serious problem with my Classic Ultimaker. The electronics died spontaneously during a print job. It was nothing special, nor was it printed very fast, so i guess that the load was not very high. The board revision is 1.5.4. I have a ulticontroller installed and i made the self powering thingie. Everything worked fine for weeks and uncountable prints. When i turn it on now, only LED7 is lighting Green. Nothing else happens. Aunt Google told me, that maybe something with the 12V lane? I´m not a electronics expert and i really need the printer, so i quickly ordered a new board. But nevertheless i´m very curious what kind of problem i have here and how i could fix it. I have a DMM by hand and PSU is fine. Have not tested if i can connect via USB with arduino but i assume that it will work. Any suggestions? Thanks a lot! Regards!