Fan Problem - Blown Board?

[Phaedrux]

It sounds like the Fan0 mosfet got damaged when the fuse was blown.

[Gary]

@Phaedrux Yeah. Nothing physically obvious. What also confused me was the 2 Fans on the WebGUI. I didn't notice that one was Tool Fan and the other Fan 0, which are the same. I thought one was the heatsink fan, which thinking about it now wouldn't make sense as it's not speed controllable. Thanks for your help.

[Phaedrux]

You can post a close up high res well lit clear photo of the fan port area so we can see if there is any damage.

[Gary]

@Phaedrux Hope it's clear enough.
Getting:
Error

Input file contains unsupported image format

[Phaedrux]

Can you try putting the photo on dropbox or google drive or something like that?

[Gary]

@Phaedrux

[Phaedrux]

Nothing really visible, but it may still have failed.

[A Former User]

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

[Gary]

@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).

[dc42]

@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.

[Gary]

@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"

[dc42]

Try now.