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I totally killed it. And not in a good way  

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Eric Block
(@eric-block)
Member
I totally killed it. And not in a good way

So, 5 hours into a 21-hour run,  I check my progress only to find that a large amorphous blob of PLA has engulfed the nozzle/hot end.

I stop the run, pull off as much material as I can and start coaxing material from all the nooks and crannies.  I'm using a thin metal rod because, apparently, I'm an idiot.

There's the smallest of sparks, and the entire printer goes dead.  No screen, no noise, no nothing. 

Clearly, I've shorted something, but what?  How would I go about troubleshooting/repairing my beloved MINI+?  could it be as simple as replacing a fuse?

 

Any and all comments gratefully accepted

 

Bizz

Posted : 24/12/2023 4:38 pm
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: I totally killed it. And not in a good way

if you only shorted the  heater power, a fuse will probably save the day. 

if you shorted heaterpower to thermistor. the buddy board may be toast.

cross your fingers and check the fuses

Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Posted : 24/12/2023 9:51 pm
Eric Block
(@eric-block)
Member
Topic starter answered:
RE: I totally killed it. And not in a good way

many thanks. Wish me luck.

e

Posted : 25/12/2023 3:09 pm
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: I totally killed it. And not in a good way

Tis' the season to be merry, I wish you good luck in your task. 

regards Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Posted : 25/12/2023 6:24 pm
Bizzwire
(@bizzwire)
Member
RE: I totally killed it. And not in a good way

So, thanks again to all for your helpful suggestions.

 

I replaced the hot end, including the heat exchanger.  Nothing.  Dead.

"I must have killed the board."  So I replaced that.  Nothing. Dead.

"Could the power supply be shot? Is the damned thing even plugged in?"

It was plugged in. 

It was plugged into a GFCI outlet.

When I reset the outlet, all was well.

 

I am a moron. 

Posted : 10/02/2024 3:11 pm
Bob
 Bob
(@bob-2)
Reputable Member
RE: I totally killed it. And not in a good way

Would it hurt your feelings if I ROFL?

Seriously though, do you own a multi-meter?  Really good ones are spendy, but for the kinds of diags we do you don't need to spend a lot, Amazon has them for as low at $9, though I'd spend a little more.  In the future you could check the output of your power brick to insure you're getting power to the board.  If you get a meter with thin probes you'd be able to probe the board and/or fuses.

Don't beat yourself up too badly, there's a learning curve to these things and the more painful the mistake the more powerful the lesson learned and the less likely you'll make that mistake again.  So:

Congratulations, you learned something new!!!

Cheers

-Bob

Prusa I3 Mk2 kit upgraded to Mk2.5s, Ender3 with many mods, Prusa Mini kit with Bondtech heat break, Prusa I3 Mk3s+ kit

Posted : 20/02/2024 4:00 pm
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