HEATBED PORT OVERC  

RE: HEATBED PORT OVERC

I have the same issue. I contacted Prusa support about this. They told me to preheat the bed to 40c before starting a print moving forward and to watch out for a firmware update.

RE: HEATBED PORT OVERC

I have the same issue.  Prusa support confirmed this is a firmware issue (a new firmware just came out, and still same issue unfortunately)

RE: HEATBED PORT OVERC

Also, I just noticed that you don't necessarily have to pre-heat the bed.   The nozzle can be used instead (like when changing filaments).   Looking over the schematics and firmware, it seems this fault is sourced from a hall current sensor that then goes to a NAND latch.   Not sure how the firmware would work around this, but I assume the devs will probably need to space out the timing of heating the bed and nozzle at the same time.   Or temp ignore faults and then reset them right as the heaters turn on.   

RE: HEATBED PORT OVERC

Update:  I solved my issue!

Turns out it was a defective hotend heater.    I swapped out the hotend with another and my issue totally went away.   I think the printer mis-reports the issue as a heatbed overcurrent issue when it is actually caused by the hotend heater.

RE: HEATBED PORT OVERC

I spoke too soon.    Next day after a few prints, the same issue is still present.    Guess a firmware update will be needed afterall.

RE: HEATBED PORT OVERC

I received a new xBuddy board from prusa support, and once I swapped it out on my printer, the problem totally vanished!    So it was indeed a bad xBuddy board.

RE: HEATBED PORT OVERC

Support has REFUSED to acknowledge it may be my xbuddy.  I have multiple videos on youtube now documenting my problem.  Every time I talk to support  they act like they have never heard of my issue or of me reporting it before.  Last I heard they were reporting it to "Internal channels", then the next time I went to support they had no idea what I was talking about.

How did you archive what I thought was impossible?    This is even more a smack in the face because I mentioned replacing the xbuddy on multiple occasions.  I seen the backordered xbuddy was not on backorder anymore and added it to my cart... then put my foot down.  THEY need to fix this, not me.

RE: HEATBED PORT OVERC

Hi Joey,, 

have you emailed Prusa with your concerns, that would ensure that there is a 'Paper Trail', of your complaint. then contact chat again, and ask them to resolve your complaint. if your chat session does not resolve the issue, email them again, to confirm your dissatisfaction. again paper trail... might be worth saving the content of your chat sessions for future reference.

[email protected]

regards Joan

RE: HEATBED PORT OVERC

Thanks Joan,

Now I know my chats were just a worthless wase of time.  You are the best.  

RE: HEATBED PORT OVERC

In my experience, a lot of chats can be worthwhile, 
BUT... If you find that a session is going badly, Backing it up with clear and concise emails can get results.... 

when MMU1 was new... I had poor results to chat sessions... emails got better results... took a while, but came out good...

Best wishes, 

Joan

RE: HEATBED PORT OVERC

Update!

Not only did they get my name wrong, pruso said they would ship me a new board!

I didn't have to beg. I promised myself that I would not be an asshole or condescending.

Guys, I wrote the nicest email requesting help.  I did not mention a new board after my first email and did everything they said/asked.  Firmware flash and factory defaults.. 

Sorry @joantabb I was not being constructive.

Lets go from here.  

RE:

 Hi Joye
you seem to have got the result that you were hoping for, let's hope it resolves the issue

Psura probably get a lot of demands for replacement kit. and support agent quality varies significantly.

the 'Broken Record' approach often works, eventually (tell them clearly what the issue is/click- tell them clearly what the issue is/click- tell them clearly what the issue is/click- tell them clearly what the issue is/click- tell them clearly what the issue is/click-) lol

Does anyone remember Vinyl records? 🙂

regards Noaj

RE: HEATBED PORT OVERC

I just went through the same issues with my 3.5 upgrade. It'll work fine if I preheat it so a second, but if I start cold I get the error.  I started emailing because of what I've read here.  That didn't go anywhere.  I did a 4 hour chat, tested everything, now I have a new heatbed thermister on its way even though the one I have tested fine.  I'm going to guess it's still going to error. It's really frustrating