So, my first layer looked alllllllmost exactly like this before i reworked my entire delta 3d printer to try and get rid of the effector tilt.

I squared up by bed to my towers as best i could, one of them is slightly off but i got it closer. I think the bed isn't flat or is warped or something.

I remachined the carriage tops that the magballs attach to and machined a fixture to align the balls to within +-.002” of eachother.
I machined new magball effector attachments as well and machined a fixture to align them to the same position and tollerance.
I made a fixture to ensure all pieces are flat to eachother as well.

I machined 3 “C” channels that i clamp to the effector to measure tilt and parallelism to the bed.
It’s dead nuts perfect in 4 out of 6 positions (near tower, away from tower x3) and the 2 positions are near the tower where the bed seems to have issues.

Made fixtures for new magball rods for the same tolerance and for repeatability.

Got a bullseye bubble level and found the effector is dead nuts, pretty much no tilt.

Ran a mesh bed level and what used to be +-1-2mm out is now .02mm out max. Mostly in the known problem area.

Good.

Then i run a first layer test and i get inconsistent extrusion, its decent in some areas and underextruded in others. Also, my solid infill and shells are not connected and i cant seem to change a setting that will change this.

Any help would be appreciated to help me dial this in.

@dc42 I bought the genuine duet2 wifi board from you. can I send it back to you for repair? how much would that cost?

yea this circuit is dead. I ripped the copper trace off the board for the source terminal.

I cant even get the hotfan to work with the fan2 circuit. I am way out of my depth here. All I've managed to print is benchies after 2 year of owning this predator. I think it's time to toss this whole thing in the trash and buy a prusa.

Using that test from that link, I cant seem to turn on any of my mosfets. I tried 4 so far. Held probes to source and gate then source and drain, nothing. No continuity

@dc42 performed a mosfet continuity test as per:
https://www.google.com/search?q=testing+mosfet+with+multimeter&oq=testing+mos&aqs=chrome.3.69i57j0l9.4510j0j7&sourceid=chrome&ie=UTF-8#kpvalbx=_6gCnYJmFE-yj_Qb_xKjgBg17

Realllllly difficult to get my finger in there to short out all 3 pins but i think I did......maybe.

When I short out all 3 then probe source to drain I get temporary continuity that slowly dissipates to open circuit. Then probe source to gate and get the same thing......light continuity 1900 or so that dissipates to 1.

pretty sure its a bad mosfet. Going to resolder one in and do it again I guess.....

@dc42 i measured the V+ Header pin on the duet2wifi board (multimeter between v+ and - ) when the fan is supposed to be on and it outputs 3.something volts. Forgot to write it down.

@gperman i didnt touch anything but TR5

@gperman sorry for the poor camera quality. That was the best I could do. These are very small.

@phaedrux

@phaedrux digikey kept sending me the wrong components.

I resoldered in a new mosfet but that didnt change any symptoms. Took the hot fan off and tested, works good. heated the hot end up past the threshold fo rthe fan and only see 3v at the pins off the duet2 wifi board.

I replaced the mosfet at TR5 (Fan0) I believe that's the correct fan for the hotend. No effect.

I suppose I could switch the fan to pwm fan2 but that doesn't fix my board.

TR5 and TR9 dont not seem to be damaged. The 3 blade fuses are intact as well.