Solved Inductive Probe always Triggered - I Tried Everything?

[akanar]

Quite a perplexing issue. I have run out of ideas as to why this is happening. Not a new build. I fixed a busted X endstop. Then my main board died. Stealthburner LEDs no longer worked and hotend fan was always on. Replaced Mainboard now I have this issue.

Current Status:
Everything works except Z Endstop and Probe are always triggered. Probe LED is on and when it is close to the bed it turns off as it should.

What I have tried:

• Replaced BTT SKR Mini E3 v3.0 (due to failed board before / Plausible new board is bad)
• Replaced Probe
• Replaced Toolhead PCB
• Continuity checked Probe Signal wire
• Confirmed BAT5 Diode is working correctly with multi-meter
• Checked if old Main Board has the same issue and it does
• Loaded old working config and confirmed same issue
• Double checked my printer.cfg settings

Questions:

• Can you simply bridge GND and PC2 on the Z-Stop to manually trigger the Probe and Z Endstop? That would allow me to determine if the issue is with the board / config or wiring
• I noticed if I remove the Fan PCB from my 2-piece hartk1213 Toolhead Board the Probe looses power. Is this as intended or indicative of a wiring issue?

 

[NoGuru]

Yes, it sounds like it is just ground and signal, you should be able to bridge them to check.

 

[akanar]

(PSU V-) GND wire was broken in the X axis Cable Chain.