I’ll cut to the chase.
I have a big blob monster attached to my printer head, NOTHING moves (in Control it “registers” it moving and changes the coordinate position), and the nozzle temp sensor reads 900+.
Now I know you’re technically not suppose to leave it running without supervision, but this printer is in my office, at my workplace, and is a prototyping tool. I often have to print parts that take over 24 hours, I CAN’T always be there.
That being said, ever since I posted something about bed wobble, I’ve always had little issues, even after correcting it. I’m almost afraid of contacting support, just because I’m afraid they’re gonna tell me I’m screwed. Depending on how exactly this thing works and what parts are actually screwed up… it could be a lot. I have seemingly 5 unresponsive linear rails, assuming the motor drivers are in the rails because I don’t know where else they would be. And I think my printer head at best needs some replacement parts.
I guess I’ll contact support (wish me luck), and start disassembling the blob monster. le sigh 
Thermistor for the nozzle has probably been displaced or messed up by the blob. As for the “won’t move” thing, it could be a problem with the controller or connections to same rather than the rails (that is, it’s detecting that the move is complete when it isn’t). Hopefully Support can sort it out.
Suggestion: mount a cheap networkable camera (old cellphone or Pi camera) inside your enclosure and get some way of interrupting the print (or the power to the machine) remotely, so that you can check on it periodically when you’re not present. I realize that still doesn’t help if you’re asleep or very busy elsewhere, but it’s better than nothing.
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I would bet the failed thermistor is causing the controller to shut down after detecting the problem. Fix that first and then try moving the rails again. You could export the touchscreen logs and check those, that would confirm if that’s the case
Great point!
I started the printer, tried to move things, nothing, as expected.
Shut it down
Then I unplugged the printer head and started it back up. It sprang to life! It did it’s initial start up jitters on each axis, and when I went into control, it homed itself and allowed me to move it while fully responding.
Thank you Brent!
Now I can just work on the printer head and update support! I’m sure they’ll be glad to not have to replace all my linear modules, hahahahaa!
I have been looking for an interesting/useful arduino project to start, maybe a camera feed with a button to pause or stop my printer remotely.
I just finished taking apart my printer head. I can’t believe I got so lucky lol.
The hotend is dunzo. No surprise there, but the fan shroud and sensor are totally fine. All I lost was a hotend. The fan shroud is a little warped in a few spots, but nothing that will hinder or get in the way of anything else sooooo seems fine to me, lol.
Only problem, my replacement hotend is bunk. The two little wires that aren’t under a set screw, I’m assuming the temp sensor, wasn’t glued or whatever they use to keep it in place. So I’m not really sure how or if I can fix that, but at least at the end of the day I just need a new hotend. 
It’s just pushed in the hole, there’s nothing other than the pre-bent wire tension keeping it in. If you can just stick it back in.
Oh seriously? This is like barely in the hole, but again, I get lucky and the way the wire has to bend to connect, pushed the loose wire further into its hole.
Many people use a thermal paste which will act a bit as a glue, and will also increase the speed at which it registers temperature changes, but I have not noticed a tangible difference in performance after doing so. Sticking it all the way to the bottom of the hole is the ‘official’ instruction.
Right on, thanks man.
If I have a problem with it coming out or not reading well, I might try it, but it seems pretty good and in there now.
It’s just been a while since I’ve looked at just a snapmaker hotend, so I totally forgot that was a thing, I just pulled it from the bag and was like, “WTF!?” lol.
I can’t even begin to explain how relieved I am to go from thinking I had a completely dead printer to being about to recalibrate it and get it printing again.
I really should tune up all my rails’ bearing gaps so everything is nice and tight, then on to recalibrate my extruder and motors to get my dimensional accuracy back to an acceptable range.
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