JohnInOttawa 104
I bought a 'rescue' UM3 and rebuilt it a few years ago. (with parts and advice from gr5 and erin at frbc8 - just a shout out).
The rebuild brought the unit back to full operation, the thing I will say is that almost everything on this machine can be replaced. (even parts of the print cores, but that is a whole other creature)
One thing I found useful was going to github and getting the full CAD drawings for the machine. In my case, some wiring was off and covers missing, so re-establishing correct routing and getting the proper sense of how the print head went together was made much better with the github files. One thing github will also get you is the actual part numbers for things you might need to order.
https://github.com/Ultimaker/Ultimaker3
Good luck! Let us know how you make out!
John
Edited by JohnInOttawa
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gr5 2,224
Where did this $3k come from? What? Are you going to have to pay $3k for this? I'm confused.
So it's a pretty nice printer.
NFC - don't need it. My UM3 currently has nothing plugged into the NFC connector and it works fine. That feature scans RFID codes on filament spools but only for UM brand filament... anyway my point is don't worry about that.
power supply - what did you get exactly? You need one hell of a beast of a power supply. You need 24 volts and it is a LOT of current. So much that it's not unusual for the actual power supplies to balk. But only after you power up the heated bed which isn't an issue for you. yet. So which power supply did you get? Officially I've seen these on UM3:
GST220A24-R7B
GS220A24-R7B
I'd get the GS and not the GST as the GS puts out just a little more power. But either should work.
As far as hours used in a school environment... odds are it was not used much. When it boots you can check how much those "nozzles" (they are called cores) were used to get an idea.
Well I'd spend $10 or so for the olimex-serial-F cable and connect that up to see where bootup is failing. One failure mode is that the "hard drive" on these things gets a bad block and all you have to do is reformat everything and they usually recover nicely (and map the bad blocks safely away from future use).
Or you could try the recover procedure if you don't want to spend the $10. You may have to do the recovery procedure anyway. But getting the $10 cable can tell you if it is failing bootup due to communication with screen, communication with print head, or something else.
Anyway recovery procedure is discussed here:
https://support.makerbot.com/s/article/1877624822572
And I have information about the olimex cable and how to use it here:
gr5.org/unbricking/
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