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This section contains questions and topics for troubleshooting your BoXZY Power Station.

4 Questions View all

nozzle and heater bed not responding

Current setup (2 weeks):

Heated Nozzle, Heated Bed Pad, Laptop and Pi Computer Connected to BOXZY power supply.

Previous Setup (2 years): Same with no Heated Bed Pad.


Heated Nozzle and Heated Bed stopped heating up. I disconnected the Laptop and Pi Computer from the Power supply and both the Heated Nozzle and Heated Bed continued to work. I connected only the Pi computer and the same issue occurred.

Question: Could there be underlying issues with the power supply that I should check. I usually leave the printer printing overnight and do not want any power issues or fires to occur. Power supply seams to get hot on the side where there is no fan. I had not checked for temperature in the past so I dont have a good base line for comparison.

Pleas advice,


Answered! View the answer I have this problem too

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1 Answer

Chosen Solution

There are two things to watch out for:


When using the heated bed, BoXZY's 19V power supply has literally 0 excess wattage available. Truthfully, BoXZY uses more wattage than the power supply can provide, but the voltage is provided at very tightly controlled intervals using pwm, so that it can technically use more power than available, as the waves go high at different points. If you pull any direct voltage or even additional pwm from BoXZY when the heated bed is operational, it will shutdown the power supply until you do a hard power reset. Even a small case fan could do it, or USB accessory.


You can create a ground loop with a Pi if you're not careful, depending on how you power it. It’s not a good idea to use BoXZY's 19V power supply to power anything that connects to BoXZY via USB. In a ground loop situation the interface may lock up the micro controller and/or interface and appear not to be heating, while heating uncontrollably (runaway heater). Always verify the heater is truly not heating when you attempt to heat it and nothing happens, and do a full reset and shutoff the power before walking away after such an instance.

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Alejandro F Cortes will be eternally grateful.
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