I ordered an cheep ctc prusa i3 from ebay, when I got it one of the motor-drivers on the GT2560 where mounted upside down, I noticed this and changed its direction. When i power up the GT2560 (using usb) the board turns on and the lcd is working (showing me the menu, that i can browse). the problem comes when I turn on the power-supply. When I do this nothing happens. When I try to move the steppers in the menu nothing is happening. I tried to go around in the menu but there is no way to get the steppers to move. I’m pretty sure that I have everything connected correctly so that isn’t the problem.
Is it possible that my board got damaged by the upside-down motor driver?, and if so do you guys got any suggestions on what component that probably got burnt?. As the board still works when using usb i figured that if its damaged its probably a component that I can change.
The power-supply that i got with the printer is a 12v 15a, (the W where not specified, but it’s probably ~ 180w). It got a green lamp in the upper left corner. If I turn on the power-supply on without the board connected the led is turned on, if the board is connected it’s not. If i remove all connections from the board (steppers/sensors) the led on the power supply is still not turned on. I figured that this is a sign that there is a short in the board, is that an correct assumption to make?
any suggestions on how to proceed are welcome!
my power supply look like this one:
https://img.banggood.com/thumb/water/oaupload/banggood/images/37/8B/7b443ff4-c3a4-4681-afde-4e5dfb1fed82.jpg
The GT 2560 board:
http://www.geeetech.com/wiki/index.php/GT2560
Hi, check the PSU, may be broken. I got a Geeetech prusa i3X last year, after assembly I turned it on, loud bang, same result as you, only LCD working if connected to PC everything else dead. Used a PC PSU to troubleshoot, it worked fine, so it was the printer PSU in my case. Went online and read about lots of issues with faulty PSUs being shipped, got it replaced, problem solved. If it is the PSU make sure you get more watts just to be safe and allow for dual extruder upgrades in the future.
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