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Mk3s not turning on  

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A1XT
 A1XT
(@a1xt)
Active Member
Mk3s not turning on
  1. My MK3s a blob then when I tried to remove it I forgot to turn it off then it create a spark. So I bought a full set of hotend kit from Amazon. I assembled it replaced everything but it's not turning on now. The power supply light is on and I checked it there is a 24v coming out from it and going to the board, the fuses seems intact. When I move the bed around it does not even give a glimpse on the lcd. Is my board fried?  

Best Answer by Hello:

 

Posted by: @a1xt

 

Posted by: @hello

Sounds like it's the fuse as normally it only fries the heater port so I'd replace fuses first 

I checked the fuse with multimeter, everything is beeping. 

Ok then it seems like it's a faulty controller chip or other component which is pretty hard to replace 

Publié : 27/09/2023 1:36 am
Hello
(@hello)
Noble Member
RE: Mk3s not turning on

Sounds like it's the fuse as normally it only fries the heater port so I'd replace fuses first 

Please help me out by downloading a model it's free and easy but really helps me out https://www.printables.com/@Hello_474427/models

Publié : 27/09/2023 7:17 am
A1XT
 A1XT
(@a1xt)
Active Member
Topic starter answered:
RE: Mk3s not turning on

 

Posted by: @hello

Sounds like it's the fuse as normally it only fries the heater port so I'd replace fuses first 

I checked the fuse with multimeter, everything is beeping. 

Publié : 27/09/2023 2:34 pm
Hello
(@hello)
Noble Member
RE: Mk3s not turning on

 

Posted by: @a1xt

 

Posted by: @hello

Sounds like it's the fuse as normally it only fries the heater port so I'd replace fuses first 

I checked the fuse with multimeter, everything is beeping. 

Ok then it seems like it's a faulty controller chip or other component which is pretty hard to replace 

Please help me out by downloading a model it's free and easy but really helps me out https://www.printables.com/@Hello_474427/models

Publié : 27/09/2023 10:39 pm
Diem
 Diem
(@diem)
Illustrious Member

Do the fans run for a moment at switch-on?

Cheerio,

Publié : 28/09/2023 12:15 am
A1XT
 A1XT
(@a1xt)
Active Member
Topic starter answered:
RE: Mk3s not turning on

 

Posted by: @diem

Do the fans run for a moment at switch-on?

Cheerio,

Nope. Nothing it just the green light on the psu

Publié : 28/09/2023 12:22 am
A1XT
 A1XT
(@a1xt)
Active Member
Topic starter answered:
RE: Mk3s not turning on

 

Posted by: @hello

 

Posted by: @a1xt

 

Posted by: @hello

Sounds like it's the fuse as normally it only fries the heater port so I'd replace fuses first 

I checked the fuse with multimeter, everything is beeping. 

Ok then it seems like it's a faulty controller chip or other component which is pretty hard to replace 

Darn. I guess I have to buy a new board

Publié : 28/09/2023 12:22 am
Hello
(@hello)
Noble Member
RE: Mk3s not turning on

 

Posted by: @a1xt

 

Posted by: @hello

 

Posted by: @a1xt

 

Posted by: @hello

Sounds like it's the fuse as normally it only fries the heater port so I'd replace fuses first 

I checked the fuse with multimeter, everything is beeping. 

Ok then it seems like it's a faulty controller chip or other component which is pretty hard to replace 

Darn. I guess I have to buy a new board

What you can do is remove every wire that's not to the psu the turn on psu any lights turn on the board

Please help me out by downloading a model it's free and easy but really helps me out https://www.printables.com/@Hello_474427/models

Publié : 28/09/2023 9:12 am
Diem
 Diem
(@diem)
Illustrious Member

You probably do have a brick...   It would be worth talking to Prusa Support via chat just to confirm.

Cheerio,

Publié : 28/09/2023 2:56 pm
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