Sample roasters, accessories, spare parts, and more › PCB Motherboard Image 1 of 1 PCB Motherboard €350.00 The brain of the ROEST sample roaster. Changing the PCB is easier than you might think! Here is the guide for replacing this part. Add To Cart Added! The brain of the ROEST sample roaster. Changing the PCB is easier than you might think! Here is the guide for replacing this part. You Might Also Like Quick View Chaff drawer foam €20.00 Quick View Glass, bean inspection chamber €35.00 Quick View Heating element - pack of two Sale Price: €40.00 Original Price: €60.00 Sale Quick View Axial fan, 140mm, cooling €60.00 Quick View Brushless motor €40.00