Dear all, The first green switching on button is replaced (Thanks to Eddy), hoping that with this the electric sparks and strange noise will be gone. Please let me know if this would not be the case. Gr, Evelien Evelien Mylle - Labmanager/ microscopy technician Advanced Live Cell Imaging VIB-UGent Center for Plant Systems Biology Ghent University Technologiepark-Zwijnaarde 71 - 9052 Ghent - Belgium Tel. +32(0)9 331 39 74 [ http://www.psb.ugent.be/ | www.psb.ugent.be ] Genome editing, cutting-edge technology for a sustainable agriculture