I bought a RAMBo 1.4a board a while back and worked great. It set for a while, not the extruder fan and the part cooling fan stopped working. I have checked everything!! Wiring, terminals, the F3 fuse, and firmware. I’m at a loss. Has anyone ever had this problem? I need advice. Thanks in advance.
Why did it sit for a long time?
Any chance either fan was replaced since it last worked?
(often times shorts during troubleshooting or replacement kill outputs)
If you measure the outputs with a DMM, do you get voltage?
Can you post a good high-resolution picture of your board as wired up?
did you check the fan just connected to a power sourc?
be sure to connect the polarity in the right way
My Mean Well power supply has 3 terminals for 24 volts+ For some weird reason one of those 3 legs is showing 0 volts. It’s also the one that powers the fans. Go figure. I ordered a new Mean well power supply. OUCH!! Thanks for the response👍