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Recent Topics

I think I fried the mainboard

by JMAKER72

I was often getting 999 as my bed temp and one of the wires looked loose so I took the bed off and re-soldered the connections. Before I reassembled everything I turned the machine on and still had 999 as the bed temp. I pulled the connector off the main board and was trying to run a couple of wires from the main board to the bed connections to see if I had a broken wire (should have just checked resistance I know..). Suddenly there was a pop and a wiff of smoke from a chip on the main board. I checked the heated bed and it did not have a voltage across it but the only thing I can think of is that the bed must be powered at all times with the switch on the negative side. I must have touched one of the connectors and back fed voltage from that through to the thermocouple connector on the board. I turned the machine back on and was fiddling with it and I noticed smoke coming from the hot end (it was not meant to be heating up). I turned everything off and on again and both the hot end and heated bed were now reading 0 degrees.

So, I think I fried the main board but do not want to spend $75 for a new one, particularly as I do not know if I also damaged the display board somehow. Either way not much point replacing a small part for $75 when a entire new machine is $180 and then I would have some spare parts.

Wondering is anyone else has seen similar issues or has noticed that the heated bed is switched on the negative side?

Heated_Bed Mainboard
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Monoprice Select Mini V2 won't move

by JMCMakesStuff

I was printing something over the night but when I woke up the print had just stopped. Ever since then the printer won't read the sd card, won't move in any axis or extrude, and the temperature just reads 0 for the bed and extruder. Any help would be appreciated.

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Print stops extruding after several hours

by jdanders

I am trying to print a big job (https://www.thingiverse.com/thing:2755765) in PLA and the print keeps messing up after several hours, but not in a consistent spot. Mostly it looks like the extruding just stops, but the printer keeps going through the motions so that when I come back and check on it, it is several layers higher than the last piece of plastic that was extruded. When I clear everything off and do a test print, it works just fine. I think the drive is still driving the plastic, because in one case the drive wheel had worn away the part of the plastic that was stuck, and in the most recent it had forced the bowden tube off and filament was all over the place in unmelted loops.

Any tips or ideas of what might be causing this after so much time? It sure seems like heat creep or the extruder getting plugged up, but I have had that happen before and it took work to get things working again.

Updated 12 Hole Ocarina
extruder stuck
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Wifi Issues

by Ralnarene

I'm sure someone has covered this before, so if you happen to know where the topic is, I'd appreciate a link. Anyway, I keep repeatedly getting errors whenever I try to transfer gcodes over wifi to my Monoprice Select Mini Pro lately. I had originally heard that in those cases you have to powercycle the printer, and retry. I've tried this a bunch of times, and it's not working anymore.

Any suggestions? I'm also investigating getting another compatible micro-SD card, but the directions I got from tech support do not turn up any results when searching for them.

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MICRO SD CARD

by jtornese

I have purchased a 32 gig micro sd card to use for my prints.
Problem: My laptop shows files that I have added to the card, but when I put it in the printer it says: No files found
Any ideas?

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