Faulty or bad quality mk3 heatbed Hi, I ordered MK3 heatbed from ebay. I connected it and wondered why it doesn't heat up enough. Only about 45 celcius. I measured the current when heating the bed and noticed it takes only 3A current. That means only 36W with 12V. After that i measured the resistance of the bed and it is 3.6ohm. I removed the wires and measured both heating elements and other was 4.6ohm and the other was 14.6ohm! That seems that my bed is faulty or very bad quality. Has anyone else experienced something like this? https://reprap.org/forum/read.php?406,597323,597323#msg-597323 Sat, 10 Oct 2026 04:46:43 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?406,597323,598164#msg-598164 Re: Faulty or bad quality mk3 heatbed https://reprap.org/forum/read.php?406,597323,598164#msg-598164 I never ever got it above 58 degrees.

I've now got a silicone bed running from 24v, which hits 110 degrees in about 5 mins - much happier.]]> Phytone Prusa i3 and variants Fri, 18 Dec 2015 07:26:28 -0500 https://reprap.org/forum/read.php?406,597323,598107#msg-598107 Re: Faulty or bad quality mk3 heatbed https://reprap.org/forum/read.php?406,597323,598107#msg-598107 That would explain the difference in Ohms between the two traces.
-Olaf]]> o_lampe Prusa i3 and variants Fri, 18 Dec 2015 02:35:36 -0500 https://reprap.org/forum/read.php?406,597323,598048#msg-598048 Re: Faulty or bad quality mk3 heatbed https://reprap.org/forum/read.php?406,597323,598048#msg-598048 built350camaro Prusa i3 and variants Thu, 17 Dec 2015 19:50:11 -0500 https://reprap.org/forum/read.php?406,597323,597757#msg-597757 Re: Faulty or bad quality mk3 heatbed https://reprap.org/forum/read.php?406,597323,597757#msg-597757 Ebay heatbed


Reprap MK3 heatbed

]]> juu-zo Prusa i3 and variants Thu, 17 Dec 2015 02:46:15 -0500 https://reprap.org/forum/read.php?406,597323,597744#msg-597744 Re: Faulty or bad quality mk3 heatbed https://reprap.org/forum/read.php?406,597323,597744#msg-597744 built350camaro Prusa i3 and variants Thu, 17 Dec 2015 01:57:28 -0500 https://reprap.org/forum/read.php?406,597323,597558#msg-597558 Re: Faulty or bad quality mk3 heatbed https://reprap.org/forum/read.php?406,597323,597558#msg-597558 juu-zo Prusa i3 and variants Wed, 16 Dec 2015 13:08:44 -0500 https://reprap.org/forum/read.php?406,597323,597476#msg-597476 Re: Faulty or bad quality mk3 heatbed https://reprap.org/forum/read.php?406,597323,597476#msg-597476 Putzer Prusa i3 and variants Wed, 16 Dec 2015 09:53:33 -0500 https://reprap.org/forum/read.php?406,597323,597323#msg-597323 Faulty or bad quality mk3 heatbed https://reprap.org/forum/read.php?406,597323,597323#msg-597323
I ordered MK3 heatbed from ebay. I connected it and wondered why it doesn't heat up enough. Only about 45 celcius. I measured the current when heating the bed and noticed it takes only 3A current. That means only 36W with 12V. After that i measured the resistance of the bed and it is 3.6ohm. I removed the wires and measured both heating elements and other was 4.6ohm and the other was 14.6ohm! That seems that my bed is faulty or very bad quality. Has anyone else experienced something like this?]]> juu-zo Prusa i3 and variants Wed, 16 Dec 2015 03:04:46 -0500