My Ender 3 has been in storage and I recently decided to set it up again. It was running perfectly before. I reinstalled Octoprint but it failed to make serial connection automatically: "Offline after error". Tried a different USB cable without the 5V pin taped but the printer showed "TMC Connection Error", which was the reason why the 5V pin had to be taped in the first place.
After going back to the taped cable and powering the printer on, I noticed a weird behavior. Usually at power on, the BLTouch would cycle by itself 3 times while the LCD screen displays the bootup screen. Now, the BLTouch would cycle once while the LCD screen turns on without the bootup screen, then the entire printer would turn off suddenly. I suspect the relay the Pi is using to control the PSU is switched off in the middle of start up. Safe mode did not solve the issue. See video links below.
Anything you recommend I try before attempting the following:
- replace relay
- reflash firmware
- replace motherboard
Safe mode, different USB cable with/without 5v taped.
You can download this in OctoPrint's System Information dialog ... no bundle, no support!)
browser.user_agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/188.8.131.52 Safari/537.36
env.plugins.pi_support.model: Raspberry Pi 4 Model B Rev 1.2
What kind of hardware precisely, OctoPrint version, OctoPi version, printer, firmware, browser, operating system, ... as much data as possible
- Raspberry Pi 4
- Octopi 1.0.0 & OctoPrint 1.9.3
- BIGTREETECH SKR Mini E3 V2.0 TMC2209
- Brave browser