Fan Problem - Blown Board?
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if you have a multimeter putting "multimeter mosfet" into google will show you how to test the mosfet properly its a little involved so doesn't make sense to repeat what google can tell you
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@bearer Thanks I will check as I have now visually blown P3. Also P1 stopped working. So all 3 now not working! Is there anywhere in the UK that I can send the board to get it fixed?
(I bought pre-wired connectors, but I didn't see that although the connectors were compatible at the hot end the polarity was reversed to the fan. I wouldn't have thought that switching the fan polarity would have blown anything - the fans would just spin the wrong way).
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@Gary said in Fan Problem - Blown Board?:
@bearer Thanks I will check as I have now visually blown P3. Also P1 stopped working. So all 3 now not working! Is there anywhere in the UK that I can send the board to get it fixed?
Send me a PM, I can replace the mosfets.
(I bought pre-wired connectors, but I didn't see that although compatible at the hot end the polarity was reversed to the fan. I wouldn't have thought that switching the fan polarity would have blown anything - the fans would just spin the wrong way).
Unfortunately, brushless DC fans don't work like that. A few types just don't work when connected the wrong way round, but most of them present a short-circuit.
Duet WiFi hardware designer and firmware engineer
Please do not ask me for Duet support via PM or email, use the forum
http://www.escher3d.com, https://miscsolutions.wordpress.com -
@dc42 Thanks for the info about the polarity. That now makes sense! I bought some PMV20XNER MOSFETs, but the size of them is way beyond my capability.
I tried to PM you, but I get then message "This user has restricted their chat messages. They must follow you before you can chat with them"
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Try now.
