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MetalTurtle
(@metalturtle)
Active Member
Power Supply Stopped Working

Hello, 

I have a MK3S (with MMU2S) that suddenly stopped working yesterday and I have come to the conclusion that the power supply just broke, which seems to be common with the old silver power supplies (which is the one on my printer).

I have seen in older forum posts people suggesting to get a 3rd-party PSU from Amazon, claiming that the Prusa ones were not that good. I know that Prusa has switched from the "silver" PSUs to the new "black" PSUs somewhat recently and my question is: are these new black PSUs actually reliable now and I shouldn't worry about getting one from Amazon (I am ok paying $108 for the PSU from Prusa; my printer is out of warranty)?

Additionally, where could I find the clearest instructions for a power supply swap?

Thanks

Best Answer by cwbullet:

Then contact support by eShop chat!

There are lots of other options but I prefer the PSUs made by Prusa.  

 

This topic was modified 4 months ago by MetalTurtle
Posted : 23/06/2021 5:17 pm
Diem
 Diem
(@diem)
Noble Member
RE: Power Supply Stopped Working

First check the fuses.

Cheerio,

Posted : 23/06/2021 6:25 pm
MetalTurtle
(@metalturtle)
Active Member
Topic starter answered:
RE: Power Supply Stopped Working

@diem

Sorry, I should have been more clear. I checked all the fuses and the PSU fuse had burned out. I replaced it and it didn't work. Having read through old forum posts, this seems to be a common occurrence with the "silver" PSUs. My question is whether the black PSUs are a high-quality replacement or if they are still known to have issues.

Posted : 23/06/2021 6:33 pm
cwbullet
(@cwbullet)
Illustrious Member
RE: Power Supply Stopped Working

Then contact support by eShop chat!

There are lots of other options but I prefer the PSUs made by Prusa.  

 

--------------------
Chuck H
3D Printer Review Blog...
Posted : 23/06/2021 7:32 pm
MetalTurtle
(@metalturtle)
Active Member
Topic starter answered:
RE: Power Supply Stopped Working

Finally got it assembled and the new power supply works!

Posted : 07/07/2021 7:35 pm
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