USB cable burning when printer is powered on

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barker1889
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USB cable burning when printer is powered on

Post by barker1889 » Sat Feb 02, 2019 11:35 pm

I've built the printer and checked it is working from the LCD controller. The axis all move and I can use the auto home function.

I began setting it up with Repetier. I connected the USB to my PC and managed to get connected using the Repetier software.

I then switched on the main power to the printer and almost immediately the USB socket on my PC began smoking, I also noticed the cable was very hot. Since then my computer will no longer recognise it as a USB device.

The printer is still working from the LCD controller (and luckily so is my USB port) but each time I plug it into my PC the USB cable starts overheating.

What could be the problem here?

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_kaktus_
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Re: USB cable burning when printer is powered on

Post by _kaktus_ » Sun Feb 03, 2019 4:52 pm

Hello.
:mrgreen:

Specify the version of the controller board you have and place a photo on which it will show the area around the USB port of your controller board.

What happens is not your fault. :D
On the forum I help to use the rod, I don't give fish.
Geeetech Prusa I3 M201 Dual extruder Mixcolor 3D printer, bought 2017-12-19, already built, in the cognitive and improvement phase
Geeetech filament, ABS only
Geeetech 3D WiFi Module for 3D Printer, bought 2018-04-15, He got a new life, and still lies in a drawer.
Positively frenzied customer of Getech Technology.

barker1889
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Re: USB cable burning when printer is powered on

Post by barker1889 » Sun Feb 03, 2019 10:13 pm

The board is a GT2560 REV A+

Pictures attached

barker1889
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Re: USB cable burning when printer is powered on

Post by barker1889 » Sun Feb 03, 2019 10:16 pm

Picutres
Attachments
20190203_1402222.jpg
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20190203_1401332.jpg
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_kaktus_
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Re: USB cable burning when printer is powered on

Post by _kaktus_ » Sun Feb 03, 2019 11:45 pm

Hi.
:mrgreen:

I expect that if you unsolder the resistor marked F2 everything will work properly.

I have described in detail in this topic.

In addition, the printer and computer should be plugged into the same power outlet.
On the forum I help to use the rod, I don't give fish.
Geeetech Prusa I3 M201 Dual extruder Mixcolor 3D printer, bought 2017-12-19, already built, in the cognitive and improvement phase
Geeetech filament, ABS only
Geeetech 3D WiFi Module for 3D Printer, bought 2018-04-15, He got a new life, and still lies in a drawer.
Positively frenzied customer of Getech Technology.

barker1889
Posts: 4
Joined: Sat Feb 02, 2019 11:24 pm

Re: USB cable burning when printer is powered on

Post by barker1889 » Wed Feb 06, 2019 4:46 am

I've removed the F2 resistor but I still have the same problem.

The computer and printer are both in the same power outlet (I've checked they use the same ground).

I've checked the voltage going between the ground of the printer and ground of the PC - I got 0.19v which shouldn't be enough to burn a USB cable?

Is there anything else you would suggest trying?

I'm going to try and get a replacement GT2560 board in case there is an issue with that.

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Re: USB cable burning when printer is powered on

Post by _kaktus_ » Wed Feb 06, 2019 6:18 am

Hi.
;)


I am troubled by the failure. :roll:
And are you able to get another PSU for testing :?:
On the forum I help to use the rod, I don't give fish.
Geeetech Prusa I3 M201 Dual extruder Mixcolor 3D printer, bought 2017-12-19, already built, in the cognitive and improvement phase
Geeetech filament, ABS only
Geeetech 3D WiFi Module for 3D Printer, bought 2018-04-15, He got a new life, and still lies in a drawer.
Positively frenzied customer of Getech Technology.

333ppp
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Joined: Sun Feb 24, 2019 1:17 am

Re: USB cable burning when printer is powered on

Post by 333ppp » Sun Feb 24, 2019 1:22 am

A mi me paso lo mismo y la solución fue desconectar la toma de tierra de la fuente de alimentación.

BR365
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Re: USB cable burning when printer is powered on

Post by BR365 » Sun Feb 24, 2019 1:47 am

barker1889 wrote:
Sun Feb 03, 2019 10:16 pm
Picutres
It looks like there is a short circuit from the upper right soldier point to the ground.

Do you have a soldering iron to fix it?
Screenshot_20190223-185601.jpeg
Screenshot_20190223-185601.jpeg (80.15 KiB) Viewed 8356 times

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_kaktus_
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Re: USB cable burning when printer is powered on

Post by _kaktus_ » Sun Feb 24, 2019 2:22 am

Hi.
:mrgreen:

The short circuit you noticed is awful. It contains data outputs D+ and D-.
This will disable communication to the printer but is not dangerous for electronics.
;)

.
pinologia_USB-B.png
pinologia_USB-B.png (227.76 KiB) Viewed 8352 times
On the forum I help to use the rod, I don't give fish.
Geeetech Prusa I3 M201 Dual extruder Mixcolor 3D printer, bought 2017-12-19, already built, in the cognitive and improvement phase
Geeetech filament, ABS only
Geeetech 3D WiFi Module for 3D Printer, bought 2018-04-15, He got a new life, and still lies in a drawer.
Positively frenzied customer of Getech Technology.

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