I have a NAD Model 7000 Stereo in for service. If this unit turns on it will stay working OK. Most of the time you press the momentary power switch and nothing happens. There is digital 5V p-p pulses on one side of the switch and when you push the button the pulses are transferred across the switch OK, so the switch is OK. I do not have a schematic to see if the micro is seeing the pulse properly. Has any one had any experience on one of these? TIA, Dale Dale A. Lubow... HarrisTV50010@xxxxxxx ..515-232-1109..(Fax)515-232-3356 Harris TV & Appliance..........335 Lincoln Way.....Ames.....Iowa.....50010-3384 ----------------------------------------------------------------------------- Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/