This home stereo amp when powered on the relay just chatters.Sounds like its going into protect. There is about 6 fuses and one labeled F5 is blown.I am thinking that this might be the one thats in line with the power\output IC. This is a STK-401-061 but not sure since I am working without a sm.Is anyone here familiar with this unit that can give me some idea's as to what this f5 ( 2.5A\250v) fuse is connected to.Thanks for your help. Mando Birdie's TV & Electronics Casa Grande, AZ mail to: birdie@xxxxxxxxxxxxx ----------------------------------------------------------------------------- Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/