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# Howto: Replace the Connectors on the Mainboard ## Why? ##

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)
• soldering and desldering equipment

## 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

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

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

### Finish Reapply the board to your printer and enjoy.

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