Problem with Power Supply

Hey,

I have a Sanguinololu Board with Screw Terminals. I bougth a PC Power Supply and connect the 12V output and the Ground to my Sanguinololu Board. If i plug it in the red LED on my Sanguinololu is ligthning up and the Steppers also work, but if i turn on the Heatbed the PC Power Supply shuts off. What can i do?


Sorry if my english is not so good

Edited 1 time(s). Last edit at 08/28/2013 01:29PM by arget888.

Check Heatbed is about 1.2 ohms and not a short.
Check power supply has at least 16 amps on the 12volt line

Hey,

The resistence of my Heatbed is 0.6 Ohm (the wiki says 0.8 [http://reprap.org/wiki/PCB_Heatbed#Electronics] i think thats ok).
My Power Supply supports up to 36 Amperes on the 12V line, i think thats also enough!

I read that a few of the Power supplys needs a base load, so i connected a DVD Drive and a Hard Drive but i get the same result, when i turn my heatbed on the power supply shuts down! I have the CP4-520-v2.0 from Speed Link (http://www.speedlink.com/?p=2&cat=2I2&pid=23642&paus=1)



Edited 1 time(s). Last edit at 08/29/2013 08:26AM by arget888.

Sounds good...

Plug your HBP directly into the power supply and turn on.
Does that work? if so it could be the driving fet on your reprap controller has a issue.

If it still shuts down... I supect power supply specs are not the truth

I contacted the retailer and he says that my heat bed is damaged, he will send me a new one. If I connect the heat bed directly to my Power Supply it dont turns on, and i testet the output on my Sanguinololu and it works so i hope that the problem is solved with the new heat bed!