First time powering on and It stops booting half way through the process.
I am trying to boot the MK4 for the first time and it stops the power on process half way through. The orange status bar stops right in the middle. I have let it sit for quite some time with no luck. I tried to flash the firmware and that worked but did not resolve my issue. I have tried booting many times and have used the reset button several times once it stops the boot process. I verified all connections in the buddy box are correct. Any advice?
Best Answer by SgtCaffran:
I would reach out to support again, asking for a replacement. They did so with me on the first contact with support. Just point to my case. We have the exact same symptom so it looks to be related somehow. And I have also tried disconnecting everything besides the motors and PSU. Nothing helps.
RE: First time powering on and It stops booting half way through the process.
Did you resolve this issue? I am experiencing the same problem after a firmware flash to the latest alpha version. Screen with the loading bar freezes exactly halfway.
RE: First time powering on and It stops booting half way through the process.
Contact support live chat probably faulty board
Please help me out by downloading a model it's free and easy but really helps me out https://www.printables.com/@Hello_474427/models
RE: First time powering on and It stops booting half way through the process.
I spoke with them a week and a half ago. A good amount Of troubleshooting was done then they escalated out. I have heard nothing since. I agree the board is bad. I am truly disappointed with the support. I have reached out twice myself and got no answers. Very disappointing.
RE: First time powering on and It stops booting half way through the process.
I did that yesterday, also did a fair amount of trouble shooting but the conclusion was that the buddy board needs replacing. Support has initiated that, just waiting for confirmation and a return label since they want to inspect.
RE: First time powering on and It stops booting half way through the process.
When it stops at halfway, does the screen go blank or freeze?
If it goes blank (mine did) then you should check out this thread, https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4-assembly-and-first-prints-troubleshooting/mk4-screen-goes-blank-after-some-time
I did the buddy board swap and it didn't work so I ended up with a new printer which has been great. Others in that thread seem to be getting new LCD panels.
RE: First time powering on and It stops booting half way through the process.
No the screen freezes, doesn't go black. It feels like it simply won't boot for some reason. Flashing firmware works, that was one of the troubleshooting steps we performed. I'm positive a new buddy board will help but we'll see.
RE: First time powering on and It stops booting half way through the process.
Mine is the same. It stops exactly half way and freezes. The screen does not go blank. I wish support would help me out. I have a brand new machine that is brick.
RE: First time powering on and It stops booting half way through the process.
I would reach out to support again, asking for a replacement. They did so with me on the first contact with support. Just point to my case. We have the exact same symptom so it looks to be related somehow. And I have also tried disconnecting everything besides the motors and PSU. Nothing helps.
RE: First time powering on and It stops booting half way through the process.
They are replacing the xBuddy board. I will let you all know if that fixes the issue.
RE: First time powering on and It stops booting half way through the process.
Good job, I will receive my replacement this Friday. Will update on this issue as well.
RE: First time powering on and It stops booting half way through the process.
Damn it, just installed the replacement xBuddy board and it still won't boot past the halfway mark!
I don't understand!
RE:
Okay so I did some troubleshooting myself. I flashed the latest 4.7.2 firmware, that worked. Then, I noticed I get a power panic failure instead of a freeze during boot.
So I disconnect the power panic cable and measure both leads, cable is good. Try booting without the cable installed. Still get the power panic error.
I measure the output of the PSU power panic and the power panic V- measures 24V to the power V+. The power panic V+, however, appears to give 0V relative to the power V-. I would expect to see 24V there as well.
Would anybody be able to measure the power panic output on the PSU?
So maybe this is a PSU problem combined with an alpha firmware that does not have a functioning power panic error?
RE:
Prusa support is amazing! (Although they needed a second try to catch the mistake!)
So the issue was indeed with the power panic. Apparently, the connector for power panic on the PSU side was reversed on my PSU. The solution is straightforward. The plastic housing of the connector slides off of the two metal pins and can be flipped and placed back.
In the end, the white wire should be on the left.
RE: First time powering on and It stops booting half way through the process.
xBuddy board replacement did not help. Same exact issue. Flashing failed the same as before. Tried the power panic fix and now I get power panic error when booting. Prusa is sending a different kind of power panic cable to try. I will update once that happens.
RE: First time powering on and It stops booting half way through the process.
Hope that works. I had similar issues with Boot lock and display freezing up but it was at variable places during startup or calibration. Ended up being the lcd board that needed to be replaced oddly enough.