I'm stumped.... [ERROR] Can't write to printer (disconnected?) (SerialException): Write timeout [ERROR] Not connected to printer.

[Nodeva]

Printer stops randomly in the middle of a print. 

LED 1 and 3 go out while the rest are solid and it throws this error: [ERROR] Can't write to printer (disconnected?) (SerialException): Write timeout

[ERROR] Not connected to printer.

This board is from the original kickstarter 

Here is what i've tried:

always printing from the sd card

I have the latest firmware, the latest pronterface

swapped usb cables

swapped power supplies

swapped sd cards

filtering the g-code

disabling the sd card access from my computer

If anyone has any ideas, i'm all ears 

Thanks!

[Arthur Wolf]

Sounds like USB disconnects.

How long is/are your USB cables ?

Are the computer and machine plugged into the same power strip ?

Is the USB port USB3 ?

Can you try Ethernet ?

Is the machine particularly large ?

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Courage et bonne humeur.

[Nodeva]

The main cable I use is 2.5ft and has ferrite bead. 

Same power strip so no ground looping

Yes, usb 3 on one computer. On the other computer i've tried its not.

I have an ethernet jack being delivered today and will solder it to the board. Did not have one installed when it was shipped. 

Machine is a mendelmax 1.5ish so not too big 

I will report back once i've tried printing over the network. Let me know if you have any other ideas/suggestions. 

Thanks