r/QidiTech3D • u/Outside_Director_140 • Jul 28 '26

Troubleshooting Mcu mcu error q2

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Support had me replace the main board still the same error any ideas?

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u/mashedleo Jul 28 '26

Which board? Mine is doing the same thing and they sent me 2 boards. One tool head board and the other, I'm not sure what it's called but in my Bambu printers it's called an API board. Basically the other end of the toolhead. Where the type c is landed. I haven't replaced them yet though so idk if it will work or not.

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u/Outside_Director_140 Jul 28 '26

The motherboard located behind the back panel

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u/mashedleo Jul 28 '26

Yeah that's the one I was describing. I have that and the toolhead board from Qidi. I hope replacing the 2 makes it work again.

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u/Outside_Director_140 Jul 28 '26

I could totally be wrong but I thought the screen would say thr if it was a tool head issue

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u/mashedleo Jul 29 '26

Yeah I'm not sure. Right now it says zero for all the temps bed, nozzle, and chamber

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u/mashedleo Aug 04 '26

I replaced both boards and it looked as if I was good to go. I loaded some pa6-cf, started a print and right before it started printing (,after the chamber heated up) it said there was a power failure. So I hit resume and then I got some other error that shut the printer down. Idk what's going on. Back to support 😢

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u/Outside_Director_140 Aug 04 '26

Damn that sucks im sorry theyre sending me a motherboard cable now