*WARNING* Incorrectly wired Blackbox fried my laptop (Need Help)

I was manually jogging and (Sphinx55) Z crashed into the Zmax/Limit Switch and continued to go, my laptop issued a warning "Surge detected on USB" but before I could do anything, my laptop(on 50% battery power) went hard off, power button doesnt respond, charging light wont light up when plugged into power DEAD.

Aside from now owning a fubar laptop, how is the USB not protected from this type of issue???
Thismake NO sense, is this an oversight in design, have I made some other egregious error.

I tried looking or usb extensions with inline surge/fuse because I dont want to burn up another 3k laptop, but only found 1 product for datacenters that may? work.

Is this an appropriate topic, a defective board? Should I be contacting OB support directly on this?

Thanks
Bryan

 

I found the/a culprit for usb power surge, improperly wired endstops.

Even after unplugging, resetting/clearing from the Win 10 dialog box,I had to uninstall the usb drivers from device manager and then let them reinstall, before the error would clear from the OS (it persisted reboots otherwise). Not sure how a miswired endstop is not electrically isolated from the usb? It didnt kill my other laptop, so Im still wondering if the Z crash was the culprit.

 

Thanks for the reply @Peter Van Der Walt

So the wiring issues stems from 3 things, the sphinx build vid assumes a different switch, the alternate switch wiring guide was not referenced iirc, and Im an idiot and tried to go too fast/too far ahead and made assumptions on the switch setup as I was fairly familiar with most of the required mechanical and electrical tasks and tried to optimize the build where I thought I could, ala hooking up both end connectors in the harness at the same time, which had me placing a 2 pin connector on the 2-wire (box end) of the switch harness. I then, assuming low voltage and sufficient safeties, on a normally open connection plugged into the #1 and 2 pins on the box again assuming the third pin was a hot or signal type lead for other switch types but fully expecting they would just not operate correctly but no catastrophic failures would occur with a limit miswired in its own port. So yeah ultimately it was totally my fault in the moment.

As I was trouble shooting homing issues (see my other thread) I discovered my wiring folley from the alt wiring guide, switched to proper 3 pin terminals, corrected a couple other non-related errors in cfg and everything worked as expected.

Back to the laptop. I have good news for me, not as good for the box. I was able to recover the laptop, it required pulling/reconnecting the cmos and main batteries. Fixing bios time/bitlocker/etc I was able to boot back into OS, correct the USB driver corruption and it was back to normal. However, whatever was the cause, the black box was culprit, and only because of my non-cnc experience in industry was I able research and recover what was an otherwise completely dead laptop.

I can tell you this, the only thing that was miswired where the 3 endstops, the x and x where never activated, and the z was activated when the z crashed on the endstop, it was properly wired for normally open on the switch but connected to #1 and #2 pins on the box instead on 1 and 3 as it should have been. It was running on 24v at the time of the crash, all jumpers had not been touched, and since once I resolved all other issues with above mentioned corrections it is behaving exactly as expected so I dont think it shipped with a misconfigured jumper.

I am immensely relieved my 3k laptop isnt toast, and Im am not being critical here in any way in any attempt to extort or degrade.

My concern now remains, that it happened to me, it could/will happen to someone else, they may not be fortunate enough to be able to recover their laptops, or they may become unrecoverable.

The recovery solution I found specifically came from research on recovery from power surges over usb. It appears that what ever happened, the box was able to overcome the laptops(2018 Lenovo X1 Yoga) overcurrent protection and soft brick it at the bios level. I know great effort was put into place to protect against such issues, it seems there is an edge case that is producing this undesired result. I can get by in electrical, but it is not my strength, Im not sure how this happens, but it did, and will likely happen again as its not like my box died during such issue and possibly others may follow my mistakes as well.

if anyone wants to try (hard)crashing an axis using the large nemas with the activated endstop miswired as I did, and test the usb line without sacrificing a pricey laptop to see if this can be repro'd

If you have any follow-up questions trying to isolate/correct this, post here and Ill try to respond.
Huge thanks!!!
-Bryan