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Prusa lacks instructions on reassembling silver PSU?  

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RainMotorsports
(@rainmotorsports)
Active Member
Prusa lacks instructions on reassembling silver PSU?

So for my MK3 to MK3S+ upgrade I reprinted my parts in ASA for enclosure use. But now I am at the step where I find out the MK3 manual doesn't show the PSU assembly as Support highlights it was assembled before shipping. Live Chat was kind enough to send me a picture, which is only lacking in the power panic details. But they don't seem to have a guide.  It's probably not a super common need but having not built one from a kit I assumed the instructions were details and I did not document it before disassembly.

So while Prusa I would like to see something put up officially. If anyone can help me in my search im sure it will be helpful to someone doing what I did in the future.  The attached picture is the point I am at.

Posted : 15/05/2022 12:56 am
RainMotorsports
(@rainmotorsports)
Active Member
Topic starter answered:
RE: Prusa lacks instructions on reassembling silver PSU?

Best I can tell I have it done right now.

Posted : 15/05/2022 1:17 am
RandyM9
(@randym9)
Estimable Member
RE: Prusa lacks instructions on reassembling silver PSU?

Maybe this will help you confirm?

Scroll down to step 24:

https://help.prusa3d.com/guide/8-electronics-assembly_34416

 

Posted : 16/05/2022 4:32 am
RainMotorsports
(@rainmotorsports)
Active Member
Topic starter answered:
RE:

Nothing in there about it, thats for the Einsy side. The Silver PSU arrives assembled with the plastic on and the wiring done. The instructions aren't there or in any other article as so far confirmed by support. Since it's also long discontinued it's not something a lot of people deal with over there anymore. The new PSU which has a built in plug and switch and a connector for power panic doesn't have to worry about this small step.

So sure each of the 2 sets of wires will go to + and - like they do on the board in that step. But that doesn't tell a user who has no real experience that the power panic goes to the first positive (probably doesn't matter?) that the plug to switch is the hot. Switch to Hot. The Neutral and Ground. Those of us that do this sort of thing can kind of work it out. But only people who originally built theirs from a kit might remember that the instructions aren't there and they need to document this one thing for a careless color change.

Fun thing is looking at my pictures I realized I hadn't gotten one wire all the way up and had to go back and fix that for fear of future failure lol.

Posted by: @randym9

Maybe this will help you confirm?

Scroll down to step 24:

https://help.prusa3d.com/guide/8-electronics-assembly_34416

 

 

This post was modified 2 months ago by RainMotorsports
Posted : 16/05/2022 10:21 pm
RandyM9
(@randym9)
Estimable Member
RE: Prusa lacks instructions on reassembling silver PSU?

Sorry, I don’t have a silver PSU so wasn’t sure exactly what you were missing.

I stumbled across a build manual for a Zaribo upgrade for the Prusa mK2/3 that might have some helpful information.

Page 73 of the manual:

You can find the rest of it here:

https://drive.google.com/file/d/1YnEJ1ik98gGvytXM6mzARbgE71zRCfch/view

Not sure if this is relevant so forgive my ignorance if not helpful.

Hope you get it sorted.

Cheers 

Posted : 17/05/2022 4:08 am
Netpackrat
(@netpackrat)
Trusted Member
RE: Prusa lacks instructions on reassembling silver PSU?

I was in a similar situation recently, and another user here directed me to the following helpful thread:

https://forum.prusa3d.com/forum/original-prusa-i3-mk3s-mk3-user-mods-octoprint-enclosures-nozzles/alternate-power-supply-meanwell-rsp-320-24/

Posted : 17/05/2022 5:55 am
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