Heated bed issue

Hi, i recently upgraded my MiniKossel printer (Marlin firmware) with a 220mm heated bed. The setup is like in the attached pictures. The thick wire goes to D8 and the thermistor goes to Pin 14.
The problem is that the heater is not ...ahem ... heating. If i put it on D9 (and change the settings accordingly in firmware) it works but only for a short time, then the printer freezes and it doesn't react to any command (even though RepetierHost doesn't show that the commands are queuing)

What should i check?

Thank you for your time.

Lucian

Have you connected 12V power to both sets of 12V input connectors on the RAMPS, if that is what you are using?

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Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].

Yes, RAMPS 1.4,
No, i didn't connected the second pair.


Could it be that simple ? Can i just take two wires from the first set and connect it to the second? I am using an XBOX PSU (1st gen)

Quote
luc1an
Yes, RAMPS 1.4,
No, i didn't connected the second pair.


Could it be that simple ? Can i just take two wires from the first set and connect it to the second? I am using an XBOX PSU (1st gen)

Yes. Make sure you get them the right way round!

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Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].

That did the trick, thank you!