U3 burned a hole in itself?
I've been setting up my DuetWifi, deux5, and paneldue 7i. First, the duet couldn't see the Deux5 (tried M115) then the paneldue stopped working. I took a look at my controller and something was glowing. Turns out, whatever IC is at U3 burned out. Looks like a Buck converter but I can't tell anymore. Anyone have any ideas of how this happened, or if it's worth fixing?
A couple pics here:
Qdeathstar last edited by
short 12v to 5v is a decent guess... hotend and fan perhaps.
Hotend fan was plugged into deux5 on one of the fan headers since it needed 12V. But that's a good theory. I'll check things that could have been plugged in to 12v/24v and 5v at the same time.
Yes, U3 is the 5V buck regulator. I've never seen one burn out before. However, if D2 has failed either open circuit or short circuit then I guess it would probably take U3 with it.
Looks like you have a version 1.04 board, so it should still be under warranty.
Thanks for the information. I looked for D2 but I couldn't find it, there's a lot of stuff going on around that regulator. Is it worth me tracking it down or should I go for warranty?
If D2 caused the buck failure, would it damage the deux5 or paneldue? Also if U3 failed for a different reason, would it damage the deux5 or paneldue? I'm hoping only the main board is damaged.
The board was purchased maybe a month ago, by someone who is moving tomorrow. This might complicate the warranty stuff if I go that route.
RentableSocks last edited by RentableSocks
I found D2, and it has failed short, I think. I haven't removed it from the board though, so it could be shorted elsewhere.