MMU2 no power after assembly?  

RE: MMU2 no power after assembly?

I'm in the same boat...

RE: MMU2 no power after assembly?

With the FINDA being lit shows that power is making it to and through the board. Are you sure the other cable is oriented correctly and in the correct port on the main board? If so then it's probably a bad board and you'll need to talk to support.

RE: MMU2 no power after assembly?

I'm thinking bad board. I double checked the cable and re-seated it.

RE: MMU2 no power after assembly?

I also checked all connections and they were fine.  I suspect a bad board - looks like this is happening to plenty of others.  Wonder what happened?

RE: MMU2 no power after assembly?

They had me try flashing the mmu. It doesn't show up in ports, they had me try with the signal cable removed and still nada. I'm fairly certain it's a bad board, and I understand the need to try stuff; but the turnaround time on emails (12 hours or so) makes for a long process.

RE: MMU2 no power after assembly?

Use the online chat. It's much faster.

RE: MMU2 no power after assembly?

I do when it's up but it wasn't available on the shop page yesterday until I was home (printer was at school where I teach). I got some things to try today; but the chat isn't showing up again.

RE: MMU2 no power after assembly?

You must be logged in to the e-shop to see the chat option.

RE: MMU2 no power after assembly?

Just an update, I have now swapped the MMU2S board and the EINSY board and still have no signs of life or USB connectivity from the MMU2S with either MMU2S board.  Awaiting on prusa's response on the next possible step.  Printer has been down for 3 weeks as I have it all apart for troubleshooting.  Ugh.

RE: MMU2 no power after assembly?

Update:

Still dead, no signs of life.  PRUSA in chat keeps asking me to email them more pictures, again and again and that they'll respond via email.  Not sure how their tech support system/staff is set up.  I haven't gotten them to reply to anything in over a week.

RE: MMU2 no power after assembly?

geoffrey. where you located , maybe some other user might be able to help if they are near by

RE: MMU2 no power after assembly?

same boat here and im sad to see that you have not found a fix yet!

RE: MMU2 no power after assembly?

FWIW my MMU2 board acts like the described symptoms if the data cable is not connected - no lights, can't be flashed, etc. so you might want to start by verifying the cable is not broken, connected right, and the wires match the pictures in the online guide.

(Found while troubleshooting the fact it won't flash firmware. It works otherwise)

RE: MMU2 no power after assembly?

Mine was working fine right up until I updated the firmware for the printer, now the MMU2 doesnt power on.  I just get a single blinking light on the board itself not the LED's

RE: MMU2 no power after assembly?

@vintagepc

Same Here.. wish Josef was watching these post..  Maybe we can get better tech support..  Seams like every one is have the same issuses with tech support..  Sale sale sale..   Fix it???   HHAHAHHHA....   All those videos on how our company cares is BS..   Looking at other printer..  Kinda SAD....

RE: MMU2 no power after assembly?

Posted by: @rabbitav

@vintagepc

Same Here.. wish Josef was watching these post..  Maybe we can get better tech support..  Seams like every one is have the same issuses with tech support..  Sale sale sale..   Fix it???   HHAHAHHHA....   All those videos on how our company cares is BS..   Looking at other printer..  Kinda SAD....

This is a community support forum. Of course you're going to see a disproportionate number of people with the same complaints/issues. When was the last time *you* made a forum post that said "thanks, this thing works as I expect"? The bulk of people here are here because they have an issue and are looking for help with it. What's more, anyone making abnormally positive posts generally gets branded a fanboy.

I've had zero issues with actual support (live chat) when I've needed it, e.g. parts issues or advanced troubleshooting.

RE: MMU2 no power after assembly?

Posted by: @rabbitav

@vintagepc

Same Here.. wish Josef was watching these post..  Maybe we can get better tech support..  Seams like every one is have the same issuses with tech support..  Sale sale sale..   Fix it???   HHAHAHHHA....   All those videos on how our company cares is BS..   Looking at other printer..  Kinda SAD....

I just don't get it. You have a problem, come into the forums and make one post and it is complaining about tech support. You don't tell us what the problem is or what you have tried to fix the problem.

The wonderful people in this forum would be more than happy to help you. Tell us exactly what the problem is with your printer and what you have tried. We can work with it from there.

RE: MMU2 no power after assembly?

@rabbitav

Actually they were great for me, Once I was able to contact them (my school network blocks the live chat). The sent me a replacement board as soon as they determined I got a dud. I then killed the board and they helped me order a replacement and had it out for me asap!

I have nothing but good things to say about prusa support and quality...I'm building my third (just bought 2 mk3s's to supplement my mk3s+mmu2s)