4028 running at 100% at 1-100

So I just upgraded my bearings to ceramic, while doing those i also updated to the new toolhead beta2. I left my 4028 fan plugged in and did nothing to firmware, but now my fan only runs at 100 %. It is wired as said in ratrig using the bed heater as ground and i have the added fan part in user overrides to use pin PA3 for the heater, the blue wire back to ground on the original part cooling fan pin, and the positive to a always on pin. This is how it was before upgrade and worked fine, no idea on what else to check
6 Replies
blacksmithforlife
sounds like a broken wire/connection or the fan broke and is on/off only now
Silver Raider US
Silver Raider US10mo ago
Yeah sadly most likely the case, luckily I have another 4028 but really did not want to break down the toolhead again, I have checked the easily diagnosed wires but yeah to no avail
blacksmithforlife
you could try just wiring in your second fan and see if that fixes it before breaking everything down
Silver Raider US
Silver Raider US10mo ago
Yup a quick wire in of the new fan works just as it should, so time to break this tool head down a bit a switch them out, thanks for the brain storming !!
blacksmithforlife
it would be interesting to dissect the old fan and see what the issue is. Maybe some internal broken wire?
Silver Raider US
Silver Raider US10mo ago
yeah may do that down the road
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