Duet 2 Wifi CPU BURNING

Danal

When was it purchased? If it is under warranty, contact the retailer (not Duet, unless you bought it direct) for replacement.

guille.ruizmedia

@bearer I see you live in Norway and repair boards. I live in Spain. I'd be willing to pay you if you are able to fix it or at least try. Much rather have you take a look at it before I go and buy another 180EUR board haha. Let me know if you are interested.

If it would be covered by the warranty then try that first. Duet3d do have some borderline ridiculous (in a good way) warranty terms I just jumped the gun thinking that would not be covered.

guille.ruizmedia

@bearer only problem is that I bought it second hand. I'll try to contact the seller.

Ah, I see. Well I stand by the thread about repairing stuff; I'm just not sure there is an easy way to determine what would need replacing up front. The CPU is about €7 but if you have to add on the wifi module, various logic chips, possibly the trinamic drivers 5pcs at €6 each it quickly adds up to a lot of parts and postage.

I would suggest you draw a line before hand of how much you'd be willing to spend on trying to fix it.

dc42

It's very unusual for the MCU to fail like that. Is anything else getting hot? In particular, check the WiFi module and the SD card. Also check whether you can still read the SD card in a PC.

guille.ruizmedia

@dc42 yeah neither of them get warm. The SD card works fine.

guille.ruizmedia

@bearer

guille.ruizmedia

@bearer could this be it?

guille.ruizmedia

@dc42 the TR5 chip which I think is the mosfet for fan0 looks to have some damage. Maybe this helps?

@guille-ruizmedia said in Duet 2 Wifi CPU BURNING:

@bearer could this be it?

It could certainly be damaged, but I doubt it's responsible for preventing the CPU from working.

If you have an soldering iron you may be able to remove it yourself. Put a blob of solder, large enough to engulf the part, on the tip of the iron and just place the iron on the side with two pins and wait a 2-3 seconds. With a bit of luck the part will come of with the iron when you remove the iron. Don't use to much heat or too much time, as you risk damaging the traces.