Resoldered mosfet LR120N all works fine. Got 3 of them just to be on the safe side

@Paul-den-Toom Sad to hear about same issue, i think mosfet on my board is short too, but it worked good on first start (~30 sec), before i started testing speeds change . I've bought another mainboard from Eleksmaker store. And i think that motor power must be from another power source (i hear RPM drops when stepper motors work).

@cesnyderces Sad, but commands don't work. I hope i'm not a total noob on such things - i've built Prusa i3 and tuned it to work fine.

For 24v power on spindel, i think we can read PWM data from arduino and attach small speed/voltage controller based on it.
But that will be the other story.

I think we can close this topic. It is hardware problem. I need new MANA board, or somehow repair existing.

@cesnyderces Thank you for advice, i'll try these commands. But i think something is already dead on board, because spindle turns on at power up even if arduino board is not pluged in board.

Spindle rpm max on power up control board even if arduino board not installed.

i've tried Candle software, new version don't move axis (need new firmware?) so i updated firmware from elekscam. Used old (0.9) candle - it can move axis. Read at this forum about rpm 100-1000 on candle as 1000-10000 rpm on milling cutter motor. Tried settings 100-200-300 etc to 1000 and somewhere at this point motor got to max and cant turn off through software. I've turned all power off then turned on and motor permanently spin on full throttle. After that i've tried to reflash firmware through elekscam software, it didn't help.

555 motor (Milling cutter motor) goes max rpm every time i turn power on.

sorry for my bad english

Just assembled my new Eleksmill, tested mechanics, read this forum. Tried in candle software spindle rpm settings to learn how it controls and work. Spindle got to max rpm and now it work every time as i turn on power to shield (switch on power button). Tried off/on power, reflash firmware etc. Any ideas? other mechs work fine. (didn't try laser - if it always go to max... don't want to try it this way. )