Duet 2 Wifi stopped responding
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@jay_s_uk Thank you for your reply. Both PC and power supply are on the same ring so I connecting both and the device still did not show up.
Checking the components, the CPU chip (see attached) gets pretty hot to the touch. Like I can put my finger on it but have to pull it away after 5 secs or so as it becomes too hot to touch. Not sure if this is normal?
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@onerob no, thats not normal. sounds like you've had a short somewhere and damaged the MCU
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@jay_s_uk That's the thing, I don't know where the short would have occurred.. It's not like I was wiring up an external component or something (the last thing I wired up was an accelerometer about a month ago, but that's long since been disconnected after I setup my input shaping). I imagine a power surge could have done it, but as I previously stated the power to the board was turned off (but not disconnected, so I suppose this could have been the cause?). So, what next? Without knowing for sure what happened am I screwed out of a warranty claim?? I certainly hope not I have A LOT of time and knowledge devoted to this.
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@jay_s_uk I purchased it from Amazon on June 22nd of this year. I examined the wiring and it all appears sound. I know looks can be deceiving when it comes to wiring, but I have all wires terminated to Molex KK type connectors and end connectors (VIN, bed & hotend heaters, etc.). When it comes to wiring, I don't cut corners. That being said I know stuff happens but I'm just sick to think my printer's dead right now and I have no explanation as to what went wrong! (I mean, I still have my BTT SKR 2 control board I replaced with the Duet, but I don't want to go back to that!).
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@onerob said in Duet 2 Wifi stopped responding:
I purchased it from Amazon on June 22nd of this year.
What seller on Amazon?
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@phaedrux 3DMakerWorld, Inc.
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@onerob Understand, if this is due to something I did wrong, be it loose wiring, lack of providing surge protection (I should know better), etc. I would take full responsibility and own up to the loss (a hundred bucks isn't going to throw me into bankruptcy). I would just like to know what happened. I've really enjoyed working with my Duet over the past several months and I'd love to continue.
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+24v getting shorted to a sensor input or the 3.3v rail on the board is the most likely explanation for the damage you reported, so I'd look at possible causes for those scenarios.
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@elmoret Thanks! I'll do that
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Well I think I discovered what happened here. While nothing on the topside of the board was evident, as I unmounted the board and removed it from its case to investigate further, being the neat-freak I am, I routed some wires under the board. What appears happened was when I mounted the board and tightened down the mounting screws, my 24v supply line to my buck converter must have been oriented just right (I'd love to calculate the odds) and got pierced by a solder joint on the board (the Duet 2 Wifi has some long ones). I imagine it didn't initially pierce all the way through but as time went by the vibrations (the board case is mounted on the side of my printer frame) must have caused it to slowly dig until it finally dug deep enough to short out. The vibrations from me mounting my filament spool onto the printer frame in preparation to print must have been what finally did it.
Oh well... Another lesson learned I suppose, albeit a slightly expensive one.
Thank you @elmoret and @jay_s_uk for your responses.
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undefined OneRob has marked this topic as solved
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@onerob said in Duet 2 Wifi stopped responding:
Well I think I discovered what happened here. While nothing on the topside of the board was evident, as I unmounted the board and removed it from its case to investigate further, being the neat-freak I am, I routed some wires under the board. What appears happened was when I mounted the board and tightened down the mounting screws, my 24v supply line to my buck converter must have been oriented just right (I'd love to calculate the odds) and got pierced by a solder joint on the board (the Duet 2 Wifi has some long ones). I imagine it didn't initially pierce all the way through but as time went by the vibrations (the board case is mounted on the side of my printer frame) must have caused it to slowly dig until it finally dug deep enough to short out. The vibrations from me mounting my filament spool onto the printer frame in preparation to print must have been what finally did it.
Oh well... Another lesson learned I suppose, albeit a slightly expensive one.
Thank you @elmoret and @jay_s_uk for your responses.
On the bright side, I'm going to use this as an excuse to upgrade to the Duet 3 6HC and finally take it to the next level. I've been wanting to add a laser and a few other things (LEDs, etc.) that the Duet 3 will allow me to do.
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@onerob That'll do it!
I've gotta say, I appreciate the honesty. Happy to knock $50 off a Duet 3 6HC if you want to purchase one from us (Filastruder). Just email support at filastruder.com with a link to this thread, and you'll get a coupon code.
