[Solved] Seemingly Random Loose Wire in Power Supply?  

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KeyPuncher
(@keypuncher)
New Member

I was printing some ASA for the first time and it suddenly stopped printing right near the end of the print. I found the fuse above the power cord connector and found that it was blown. I replaced it tried to turn it on again and nothing. Checking the new fuse I found that it also blew.

So I opened the thing up to see what's going on and I found a wire not connected to anything on one end coming from the positive 24V terminal off of the switch board. I'm not sure if it came loose from something when I was taking the printed parts off of it but I don't see any evidence of that.

Anyone know what this was connected to if anything?

Posted : 23/10/2020 6:03 am
Lichtjaeger
(@lichtjaeger)
Noble Member

The sense line should be connected to the 24V output.

https://github.com/prusa3d/MK3_Power_Panic

Posted : 23/10/2020 7:13 am
vintagepc
(@vintagepc)
Noble Member

Yup, that's the +24VDC supply for the power panic board.

Posted : 23/10/2020 2:56 pm
KeyPuncher
(@keypuncher)
New Member

Oh I see, so it probably just came undone when I was removing the wires connected to the power supply. Then I suppose it goes to one of the terminals on the power supply labeled +24V.

Posted : 23/10/2020 5:28 pm
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