Controller short circuit?

[velocelt]

I've already put in a tech support request to Geeetech, but thought I'd ask here if my situation has happened to anyone else. I bought a Geeetech A10 on 12/28/18 and assembled it a few days back. It was shipped without the proper power supply cord though. I purchased it from Banggood and in the check-out process requested a US 110v type cord. It arrived instead with a European 220v type cord. I contacted Banggood requesting a proper replacement but heard nothing back. Instead, I sourced another power supply cord of the proper type. Yesterday I plugged it in, turned on the switch on the side of the power supply and there was a beep, a loud "pop: (like a circuit blowing), and then smoke came out from the area behind the controller/display. The power supply seems to work at least from the standpoint that all the fans are running, and there is a red LED lit on the Z-axis stepper motor limit switch and some LED contained within that fan-cooled box underneath platform. The display is completely dead. I'm guessing that something probably is supposed to be switched to 110v vs 220v and thus plugging it in fried something. Although, I can't see how a lower current would fry something, but this is only my second 3D printer, my first being an iMakr Startt kit. So, while I wait for a reply from Geeetech tech support, has anyone else experienced a similar catastrophic failure of the controller such as this, and is this something related to the improper power supply cord? I'm not overly experienced with troubleshooting electronics, and I'm a bit mystified as to why the power supply is obviously running the various fans but the controller is somehow fried. I'm hesitant to investigate anything in-depth until I hear from Geeetech. Thoughts?

[TMeeks]

In the back of the upright power supply, there is a slider that switches input between 220v and 110v.

[velocelt]

I did change the slider switch but that shouldn't have made any difference. Slider switch set to 230v should not fry the main board with only 110v coming into it. At any rate, I took a look at the main board and the chip in the center has burn marks on it as do a couple other parts of the main board. I guess something is bad here - the power supply or main board. If it's possible to ruin the main board by not having the power switch set correctly on the power supply, then there should be a major warning in the start up instructions, rather than simply a switch and label on the power supply. I know from hearing from someone else that they had the same problem - incorrect cord, etc. and their main board burned up as well. Apparently they bought their printer through Banggood as well and they would not replace parts or take it back, and that particular person said Geeetech just ignored their emails. Fingers crossed that I get some sort of favorable resolution, otherwise I guess I'll buy enough replacement parts to fix this that I might as well have just bought a whole new printer.

[TMeeks]

I had also gotten a 230v cable with 230v selected with mine and plugged in a 120v cable without any damage. I just change it to the correct voltage and it was fine. There must have been some other issue with your board.

That's a bummer because everyone is probably out due to the Chinese New Year, which is a LONG holiday.

[_kaktus_]

Hello.

It is obvious that an incorrect position of the power switch in the PSU will first destroy the PSU.

It's sad what happened to you.

Your description shows that the chips on the controller board are destroyed.
You can contact your dealer to open a warranty claim.


The user manual shall contain the relevant information. See section 3.3 on page 14.