Hey everyone. I have a heatbed that I haven't been able to find any info on, so any info would be awesome. As you can see in the attached picture, there are 6 solder pads and I don't know if I've soldered to enough of them. The problem it's having is, it barely gets up to 106C with a magazine on top and cardboard underneath. Once I take the magazine off, it drops to around 86C and remains there. So, that's where I'm at. Thanks guys! [attachment 48408 IMG_20sma.jpg] https://reprap.org/forum/read.php?262,464728,464728#msg-464728 Thu, 16 Apr 2026 20:26:29 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?262,464728,465496#msg-465496 https://reprap.org/forum/read.php?262,464728,465496#msg-465496
If the power supply voltage is adjustable, you could turn it up a little.]]> dc42 Printing Wed, 04 Feb 2015 03:59:43 -0500 https://reprap.org/forum/read.php?262,464728,465115#msg-465115 https://reprap.org/forum/read.php?262,464728,465115#msg-465115 gusman Printing Tue, 03 Feb 2015 10:58:44 -0500 https://reprap.org/forum/read.php?262,464728,464892#msg-464892 https://reprap.org/forum/read.php?262,464728,464892#msg-464892
What voltage are you getting between the pads, and how does this compare to the voltage at the output of the power supply?]]> dc42 Printing Tue, 03 Feb 2015 03:37:47 -0500 https://reprap.org/forum/read.php?262,464728,464846#msg-464846 https://reprap.org/forum/read.php?262,464728,464846#msg-464846
I've attached a picture and I hope it's clear. There are 2 ohms between the yellow pads, but only 0.3 ohms between each yellow and red pad and the purple seem to do nothing at all. Unfortunately I will be gone until thursday, but any advice on this between now and then will help me fix it when I get back. Thanks

[attachment 48425 IMG_20sma.jpg]]]> gusman Printing Tue, 03 Feb 2015 00:22:18 -0500 https://reprap.org/forum/read.php?262,464728,464841#msg-464841 https://reprap.org/forum/read.php?262,464728,464841#msg-464841
You ought to be able to do some detective work. The mk3 has two heating elements, so an ohm meter should be able to identify which pads are for those. What the other two pads are for I could only guess that they have something to do with the led indicator. Once you know the heating pads (there will be a small non-zero) resistance, you can connect a power supply directly verifying that you get heat. If you do, and you are using 12 volts, then you need to wire the elements in parallel; if you are using 24 volts wire them in series)]]> jbernardis Printing Mon, 02 Feb 2015 23:43:23 -0500 https://reprap.org/forum/read.php?262,464728,464832#msg-464832 https://reprap.org/forum/read.php?262,464728,464832#msg-464832 gusman Printing Mon, 02 Feb 2015 22:41:21 -0500 https://reprap.org/forum/read.php?262,464728,464830#msg-464830 https://reprap.org/forum/read.php?262,464728,464830#msg-464830 here discusses the wiring.]]> jbernardis Printing Mon, 02 Feb 2015 22:26:11 -0500 https://reprap.org/forum/read.php?262,464728,464807#msg-464807 https://reprap.org/forum/read.php?262,464728,464807#msg-464807 gusman Printing Mon, 02 Feb 2015 20:01:37 -0500 https://reprap.org/forum/read.php?262,464728,464784#msg-464784 https://reprap.org/forum/read.php?262,464728,464784#msg-464784 here. I think you need to make an additional connection.]]> jbernardis Printing Mon, 02 Feb 2015 18:44:30 -0500 https://reprap.org/forum/read.php?262,464728,464748#msg-464748 https://reprap.org/forum/read.php?262,464728,464748#msg-464748
[attachment 48412 IMG_2sma.jpg]]]> gusman Printing Mon, 02 Feb 2015 17:04:08 -0500 https://reprap.org/forum/read.php?262,464728,464734#msg-464734 https://reprap.org/forum/read.php?262,464728,464734#msg-464734 MindRealm Printing Mon, 02 Feb 2015 16:39:48 -0500 https://reprap.org/forum/read.php?262,464728,464728#msg-464728 https://reprap.org/forum/read.php?262,464728,464728#msg-464728 [attachment 48408 IMG_20sma.jpg]]]> gusman Printing Mon, 02 Feb 2015 16:23:13 -0500