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Howto: Replace the Connectors on the Mainboard ​

Why? ​

board with burned pins

The green connectors on the board are not rated for the heatbed currency. Multiple users on the Facebook-Groups showed their burned pins, connectors or mainboards. To prevent this you should switch the connectors.

Preparation ​

Parts ​

You need:

  • new connectors with a pin distance of 5,08mm and a currency rating of at least 20A (ebay: AKZ120 or 5mm PCB)
  • soldering and desldering equipment (like this)

Processing ​

Warning! ​

If you have no experience in soldering you should give it to someone who knows how to do this. Messing up the connectors could lead to a fire, so give it to some electronics-guy.

Desoldering ​

Board with stock connectors

Desolder all three connectors. Heat the two pins alternating and pull them out or use desoldering tools like desoldering wick and a desoldering pump.

Board without connectors

Solder the new connectors ​

To apply the new connectors to the board just solder them where the old ones were.

board with first new connector

board with three new connectors

Finish ​

Reapply the board to your printer and enjoy.

To prevent the high currency of the heatbed going through the Mainboard apply a relay to your setup.