Hello, the scheme of this centrifuge model took time behind him, as well as other Ependorf models and I did not get it online, and the house does not provide it, although if you send the complete card, I already bought several, but they are very expensive . If an element is missing, I don't think you can repair it, where some component jumps is the part of the switching power supply, which is SMD and very miniature. The most common fault of these centrifuges are two power resistors that go to the input of the mains supply, which are changed without problem, even if you find ones of similar value. Also the hybrid IGBT modules, have two large ones with radiator and one fan in each one (if a fan fails it gives a temperature error), these modules carry inside the main 4 IGBT retreader bridge for the variation of motor speed and another one for the braking, I have changed some removing it to a broken card. Also the cover amigiguador, that is obtained in spare parts of car or tractors, in the amigiguador comes the force in niwtons. Little else can I tell you. Luck.