<![CDATA[SoliForum - 3D Printing Community — Power supply polarity]]> https://www.soliforum.com/topic/4863/power-supply-polarity/ Sat, 14 Dec 2013 03:49:32 +0000 PunBB <![CDATA[Re: Power supply polarity]]> https://www.soliforum.com/post/44304/#p44304 Easy as Pie wink

]]> Sat, 14 Dec 2013 03:49:32 +0000 https://www.soliforum.com/post/44304/#p44304 <![CDATA[Re: Power supply polarity]]> https://www.soliforum.com/post/44292/#p44292 And it's powered up again!

Thanks for your help, helpful people!

]]> Sat, 14 Dec 2013 02:38:44 +0000 https://www.soliforum.com/post/44292/#p44292 <![CDATA[Re: Power supply polarity]]> https://www.soliforum.com/post/44290/#p44290 Oh, yes, sang boards are boring old screw terminals.

Yes the new printrboards have jacks.  I mistakenly believed you where referencing one of those.

]]> Sat, 14 Dec 2013 02:11:55 +0000 https://www.soliforum.com/post/44290/#p44290 <![CDATA[Re: Power supply polarity]]> https://www.soliforum.com/post/44289/#p44289 ronsii wrote:

On my sang boards the blue wire is ground and is on the bottom of the board when it is mounted to the printer I don't have a printrboard in front of me so not sure if it's the same but if you have a ohm meter handy just check from part of the ground plane or usb shield to the power terminals and one will be a dead short.

That's what I need to do. Thanks!

I'm guessing later boards have a power jack, hence the 'center positive' comment.

Mine is like this.

http://www.solidoodle.com/wp-content/uploads/2012/01/Motherboard.jpg

Also, the power supply that came with it originally was 12V 12.5A. I'm doing a straight swap for the exact same type.

]]> Sat, 14 Dec 2013 02:08:27 +0000 https://www.soliforum.com/post/44289/#p44289 <![CDATA[Re: Power supply polarity]]> https://www.soliforum.com/post/44287/#p44287 It is "center positive".


In other news, its a 20v/10A rated jack, meaning its 200W rated. 12v/12.5amp means it runs at 150W, or 75% of rated max load...

]]> Sat, 14 Dec 2013 02:03:31 +0000 https://www.soliforum.com/post/44287/#p44287 <![CDATA[Re: Power supply polarity]]> https://www.soliforum.com/post/44283/#p44283 On my sang boards the blue wire is ground and is on the bottom of the board when it is mounted to the printer I don't have a printrboard in front of me so not sure if it's the same but if you have a ohm meter handy just check from part of the ground plane or usb shield to the power terminals and one will be a dead short.

]]> Sat, 14 Dec 2013 01:49:22 +0000 https://www.soliforum.com/post/44283/#p44283 <![CDATA[Power supply polarity]]> https://www.soliforum.com/post/44263/#p44263 Well, I did something stupid, and I'm hoping someone here can help me.

After being busy with other stuff for a few months, I came back to my Solidoodle 3, and the power supply immediately went pop when I turned it on.

I took it off to see if I could fix it, but didn't note the polarity, and I can't see it on the board.

I've now got a replacement 12.5A power supply, but I'm not sure of the polarity.
Could anyone with a solidoodle 3 take a look and see which is +v and which is ground?

]]> Fri, 13 Dec 2013 23:53:57 +0000 https://www.soliforum.com/post/44263/#p44263