Hello everyone; Printer: 3Up V2 RAMPS 1.4 board I'm trying to troubleshoot what I think might be a problem with my heated bed: The bed heats well to about 60c, then from 60 to the target of 65 it takes about 30 minutes. I have 12v going into the board, but the voltage taken at the Heat Bed terminals is pulsing between 3 and 4 volts. Is this normal? If not, any ideas on what I should do next? Thanks in advance; Joe https://reprap.org/forum/read.php?219,609285,609285#msg-609285 Tue, 16 Jun 2026 08:06:04 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?219,609285,611435#msg-611435 https://reprap.org/forum/read.php?219,609285,611435#msg-611435
I'm still a newbie, but after messing around a little more I think it might have something to do with my software settings versus a hardware problem. I think I need to experiment a little more before I start changing parts out.

Appreciate the advice!]]> jbg92 RAMPS Electronics Sun, 17 Jan 2016 22:17:13 -0500 https://reprap.org/forum/read.php?219,609285,609887#msg-609887 https://reprap.org/forum/read.php?219,609285,609887#msg-609887 If it's 3-4V at the Ramps terminals, check your 5V regulator of the ATMega. It might not provide 5V, so the MOSFET doesn't switch ON fully. ( FET gets very hot then! )]]> o_lampe RAMPS Electronics Fri, 15 Jan 2016 04:10:22 -0500 https://reprap.org/forum/read.php?219,609285,609329#msg-609329 https://reprap.org/forum/read.php?219,609285,609329#msg-609329 gmckee RAMPS Electronics Wed, 13 Jan 2016 23:24:45 -0500 https://reprap.org/forum/read.php?219,609285,609285#msg-609285 https://reprap.org/forum/read.php?219,609285,609285#msg-609285
Printer: 3Up V2
RAMPS 1.4 board

I'm trying to troubleshoot what I think might be a problem with my heated bed: The bed heats well to about 60c, then from 60 to the target of 65 it takes about 30 minutes. I have 12v going into the board, but the voltage taken at the Heat Bed terminals is pulsing between 3 and 4 volts.

Is this normal? If not, any ideas on what I should do next?

Thanks in advance;
Joe]]> jbg92 RAMPS Electronics Wed, 13 Jan 2016 19:02:13 -0500