This unit has 165vdc on C110 filter but no secondary volts.Checked Q101=K2750 &Q102=2SC3377,also PC101 the optoisolator.Checked all diodes,transistors on this power supply pcb.Fuses PS401 &PS402 on mains pcb are ok.Does this supply need a start voltage from mains to fire up?Any help appreciated...tia............ Don of HARTS-TVCR-ASC 9 Robert St,Oromocto,NB,Canada,E2V3N2 Tel-506-357-9785,Fax-506-357-6010 hartstv@xxxxxxxxxxx ***************************************************************************** Classifieds! Buy or Sell! http://sell.tech-assist.org The Tech Address Book: http://www.tech-assist.org/secure/tip/contact.htm Add a Repair Tip Here, or Change/Remove your Email Address: http://www.tech-assist.org/secure/tip/main.htm Lost Password: http://www.tech-assist.org and select "Lost your Login Info?". Email Archives: //www.freelists.org/archives/techassist/