Power issues with printer - need help – Hardware, firmware and software help

mephisto

(@mephisto)

New Member

Power issues with printer - need help

hi everyone,

so i borrowed a Prusa i3 mk3 from my brother the other day.

today i wanted to power it on for the first time, but there is nothing happening. so i broke out the multimeter and now i am a bit confused.

here you can see that i do not have power across the main power input terminals on the PSU

https://imgur.com/a/FaaBFyU

but when i disconnect the L wire from the power panic board test then i see voltage

https://imgur.com/a/XSxCt9R

for the test i disconnected the rocker switch.

has anybody got an idea what could be the problem here?

thank you for your help

Posted : 20/09/2021 7:05 am

cwbullet

(@cwbullet)

Member

Support

I would definitely contact support. You may have a bad PSU.

--------------------
Chuck H
3D Printer Review Blog

Posted : 20/09/2021 8:56 am

mephisto

(@mephisto)

New Member

Topic starter answered:

RE: Power issues with printer - need help

i did fear that might be the case.

also i just checked, i do not have the Chat option when i open the site - even with multiple browser, not sure why this is happening

edit: found the chat, it is just in the shop

Posted : 20/09/2021 9:19 am

mephisto

(@mephisto)

New Member

Topic starter answered:

power panic board

with the help of support i was able to narrow the issue down to the power panic board.

unfortunately there are no spare parts for it.

does someone know, if i could just skip the board? what does it actually do?

Posted : 20/09/2021 11:04 am

cwbullet

(@cwbullet)

Member

Login

You have to login. You will need to use your brother's account/

--------------------
Chuck H
3D Printer Review Blog

Posted : 20/09/2021 11:25 am

JoanTabb

(@joantabb)

Veteran Member Moderator

the power panic board, monitors the incoming power for problems, and triggers a self protection action in the printer to try and save the current position data before power failure, in the hopes that the printer can resume printing when power is restored.

unfortunately it is not fool proof...

I use a UPS in preference...

you could bypass the power panic board and have a working printer without power panic, quite quickly!

Power panic boards are available on Aliexpress.
I have no idea how good they are

https://www.aliexpress.com/item/32907416054.html?spm=a2g0o.productlist.0.0.4740651bB4pliY&algo_pvid=3d7a6b88-470c-409f-a49f-636604d7f86d&algo_exp_id=3d7a6b88-470c-409f-a49f-636604d7f86d-0&pdp_ext_f=%7B%22sku_id%22%3A%2210000006256994113%22%7D

regards Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Posted : 20/09/2021 4:32 pm

mephisto

(@mephisto)

New Member

Topic starter answered:

power panic

thank you for your response.
i did just dad a moment ago, and now i am calibrating the machine.

Posted : 20/09/2021 4:45 pm

JoanTabb

(@joantabb)

Veteran Member Moderator

Best wishes

Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Posted : 20/09/2021 5:25 pm

cwbullet

(@cwbullet)

Member

Good news

Happy printing!

--------------------
Chuck H
3D Printer Review Blog

Posted : 20/09/2021 6:06 pm