Repair a Duet 0.85 a "little bit" hot ?

Hello everyone !

After what I think is a wrong manipulation from me, the Atmel chip on my Duet 0.85 started to heat up alot (i litteraly printed my fingerprint on it when I touched it...).
What bothered me is that the touchscreen still works fine and that i still can connect on the ethernet, by the way, everything I send (like a g28) doesn't work...

Does anyone know if there is some components that i can check and maybe replace to make it works again ?

Thanks everyone !

If the Atmel processor heats up with nothing else connected to the Duet, that usually means the processor is damaged. Often component L7 is damaged too. The usual cause is a short between the thermistor VSSA connection and a wire carrying +12V or +24V.

If you are in the USA, you may wish to PM user W3DRK on the Duet3D.com forum because he can repair Duets.

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Delta printer calibration calculator, mini IR Z probe, and colour touch screen control panel: [escher3d.com]

Large delta printer, and other 3D printer blog postings: [miscsolutions.wordpress.com]

Disclosure: I have a financial interest in sales of the Panel Due, Mini IR height sensor, and Duet WiFi/Duet Ethernet.

Hello !

thanks for your quick answer, seems it's lost for it (i'm from Belgium).

If you want to try replacing it yourself, there are videos on youtube about how to desolder large chips using ChipQuik and similar very low melting point solders.

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Delta printer calibration calculator, mini IR Z probe, and colour touch screen control panel: [escher3d.com]

Large delta printer, and other 3D printer blog postings: [miscsolutions.wordpress.com]

Disclosure: I have a financial interest in sales of the Panel Due, Mini IR height sensor, and Duet WiFi/Duet Ethernet.

Hello, sorry for the late answer

I will check and try (I found this little chip for 10 eu. so why not) !

Anyway thank you for the follow and the answers !

The main thing to be careful of is that in removing the old MCU, you do not lift any of the PCB traces. I suggest you buy a cheap vacuum pickup tool on eBay.

---

Delta printer calibration calculator, mini IR Z probe, and colour touch screen control panel: [escher3d.com]

Large delta printer, and other 3D printer blog postings: [miscsolutions.wordpress.com]

Disclosure: I have a financial interest in sales of the Panel Due, Mini IR height sensor, and Duet WiFi/Duet Ethernet.