Repair a Duet 0.85 a "little bit" hot ?
Posted by Crixos
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Repair a Duet 0.85 a "little bit" hot ? December 01, 2017 12:13PM |
Registered: 7 years ago Posts: 5 |
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 !
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 !
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Re: Repair a Duet 0.85 a "little bit" hot ? December 01, 2017 06:03PM |
Registered: 8 years ago Posts: 14,614 |
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.
Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod
Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].
If you are in the USA, you may wish to PM user W3DRK on the Duet3D.com forum because he can repair Duets.
Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod
Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].
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Re: Repair a Duet 0.85 a "little bit" hot ? December 02, 2017 09:50AM |
Registered: 7 years ago Posts: 5 |
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Re: Repair a Duet 0.85 a "little bit" hot ? December 02, 2017 10:06AM |
Registered: 8 years ago Posts: 14,614 |
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.
Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod
Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].
Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod
Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].
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Re: Repair a Duet 0.85 a "little bit" hot ? December 18, 2017 03:59PM |
Registered: 7 years ago Posts: 5 |
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Re: Repair a Duet 0.85 a "little bit" hot ? December 19, 2017 09:06AM |
Registered: 8 years ago Posts: 14,614 |
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.
Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod
Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].
Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod
Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].
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