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Help! My Mk3 died last night  

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RobPardee
(@robpardee)
Active Member
Help! My Mk3 died last night

I've had my Mk3 kit for about two months and for some reason it died last night. I woke up and the printer stopped in the middle of the print, the power switch does nothing. I have tried a different outlet as well and nothing happens. What do I do and how can I be sure what the problem is? My first thought is the power source died but I can't be sure as nothing is responding. I'm not even sure the best way to get a hold of support. I'm in the US.

Publié : 13/03/2018 1:28 pm
ThibLM
(@thiblm)
Active Member
Re: Help! My Mk3 died last night

Yeah it could be anything but probably your power supply. On the official web site the chat is really efficient and will probably find a solution for you.
They are really nice.

Hope it could help you i dont know another solution ...

MK2S and MK3 owner

Publié : 13/03/2018 1:36 pm
john.n13
(@john-n13)
Estimable Member
Re: Help! My Mk3 died last night


I've had my Mk3 kit for about two months and for some reason it died last night. I woke up and the printer stopped in the middle of the print, the power switch does nothing. I have tried a different outlet as well and nothing happens. What do I do and how can I be sure what the problem is? My first thought is the power source died but I can't be sure as nothing is responding. I'm not even sure the best way to get a hold of support. I'm in the US.

You should check the fuse in the base of the power supply as a first item. If your fuse is good, for information of those of us here interested in the general power supply failure topic, please tell us your supply voltage - 110/120 or 220/240.

Publié : 13/03/2018 1:48 pm
RobPardee
(@robpardee)
Active Member
Topic starter answered:
Re: Help! My Mk3 died last night

Thank you for the replies. I have it set to the US voltage 110V. Im at work, as soon as i get home Ill check the fuses in the board but how do you get to the fuse inside the power supply?

Publié : 13/03/2018 1:58 pm
john.n13
(@john-n13)
Estimable Member
Re: Help! My Mk3 died last night


Thank you for the replies. I have it set to the US voltage 110V. Im at work, as soon as i get home Ill check the fuses in the board but how do you get to the fuse inside the power supply?

It's under the little cover immediately above the power cord connection on the base.

Publié : 13/03/2018 2:26 pm
john.n13
(@john-n13)
Estimable Member
Re: Help! My Mk3 died last night


Thank you for the replies. I have it set to the US voltage 110V. Im at work, as soon as i get home Ill check the fuses in the board but how do you get to the fuse inside the power supply?

Publié : 13/03/2018 2:31 pm
john.n13
(@john-n13)
Estimable Member
Re: Help! My Mk3 died last night



Thank you for the replies. I have it set to the US voltage 110V. Im at work, as soon as i get home Ill check the fuses in the board but how do you get to the fuse inside the power supply?


It's under the small cover immediately above the power cord socket.

Publié : 13/03/2018 2:32 pm
josh.w3
(@josh-w3)
Estimable Member
Re: Help! My Mk3 died last night


I have it set to the US voltage 110V.

Are you saying your PSU has a manual voltage selector switch on it? If so, you have a different MK3 PSU than any I've seen. To date, the MK3 PSU has been auto switching 110-240v.

- My MK3 Power Supply and Pwr Mgmt Upgrade
Publié : 13/03/2018 6:13 pm
RobPardee
(@robpardee)
Active Member
Topic starter answered:
Re: Help! My Mk3 died last night

I should clarify, I have the MK3 so I doubt it has a manual switch but I'd have to double check when I get home. My comment was meant to reply that I have a 110V input into the printer as questioned by John.n13.

Publié : 13/03/2018 7:54 pm
RobPardee
(@robpardee)
Active Member
Topic starter answered:
Re: Help! My Mk3 died last night

Alright, I pulled the fuse from the power source and it is definitely blown, I can't see anything in the glass tube but dark burnt spots and pieces of metal in there. Do I need to get a new 5A 250V fuse, I'm thinking that is what the writing on it means: T5L250V

Publié : 13/03/2018 10:11 pm
Martin Wolfe
(@martin-wolfe)
Reputable Member
Re: Help! My Mk3 died last night

Hmm. T5L250V is a fuse rated for the European market which runs at 230V. You would Probably need a T10L125V for the US market on a 110V supply as to get the same power it will have to draw twice the current.

Martin.

Martin Wolfe

Publié : 13/03/2018 10:26 pm
Paul Meyer
(@paul-meyer)
Honorable Member
Re: Help! My Mk3 died last night


Hmm. T5L250V is a fuse rated for the European market which runs at 230V. You would Probably need a T10L125V for the US market on a 110V supply as to get the same power it will have to draw twice the current.

Martin.

It is not uncommon to have a fuse rated for a higher voltage the supply, and doesn't hurt anything. The current is the thing that matters. If there was a 5A fuse installed, it should likely be replaced with a 5A fuse because that is what the circuits behind the fuse were designed to handle.

5A * 125V is 600W, plenty for this PSU.

One note: the fuse probably blew because your PSU died. When you replace the fuse, it will likely blow as well, or not fix your issue. You might want to disconnect your power wires from your Einsy before trying out a new fuse, so if the PSU finishes failing it doesn't take the Einsy with it.

If the new fuse fixes things and the PSU delivers 24v, then power off, reconnect the Einsy, and give it a go.

More likely it's still dead and/or the new fuse blows, in which case contact Prusa (after scanning through the dead power supply thread).

Publié : 13/03/2018 11:38 pm
RobPardee
(@robpardee)
Active Member
Topic starter answered:
Re: Help! My Mk3 died last night



Hmm. T5L250V is a fuse rated for the European market which runs at 230V. You would Probably need a T10L125V for the US market on a 110V supply as to get the same power it will have to draw twice the current.

Martin.

It is not uncommon to have a fuse rated for a higher voltage the supply, and doesn't hurt anything. The current is the thing that matters. If there was a 5A fuse installed, it should likely be replaced with a 5A fuse because that is what the circuits behind the fuse were designed to handle.

5A * 125V is 600W, plenty for this PSU.

One note: the fuse probably blew because your PSU died. When you replace the fuse, it will likely blow as well, or not fix your issue. You might want to disconnect your power wires from your Einsy before trying out a new fuse, so if the PSU finishes failing it doesn't take the Einsy with it.

If the new fuse fixes things and the PSU delivers 24v, then power off, reconnect the Einsy, and give it a go.

More likely it's still dead and/or the new fuse blows, in which case contact Prusa (after scanning through the dead power supply thread).

Thank you for the heads up. I was wondering what might cause it to blow. I will disconnect the board to be safe. Really, thanks for this suggestion I wouldn't have thought about that.

Publié : 13/03/2018 11:50 pm
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