I called B&D Enterprises, and he emailed me and suggested using a NE555N, which is an NTE955M cross. I had one, installed it and unit works good with no distortion. Location number on the board was U4. I guess it's close enough. I tried a good music CD and it sounded very clear. Phil Bader Gary McCartney wrote: > From the famous 8 pin IC "555 timer", a new CMOS version of the IC came >out, and it was called "7555". Perhaps thats what you have. Should be >able to get it at Digikey or other suppliers relatively cheap. > > > > >Gary McCartney > >McCartney Electronics >Guelph Ontario Canada >Est. 1984 >email: gary (at) number63.ca > > > > > > > >Phil Bader wrote: > > >>This amplified three way speaker system for my PC has had some >>distortion/feedback at low volume. >>I seem to have narrowed it down with freeze spray to one 8 pin DIP IC on >>the board: It says: >>"Philips 7555CN" >>I assume it's maybe an op amp but I cannot find any info on it so as to >>cross it for replacement. >>Thanks, >>Phil Bader >> >> >> > > >----------------------------------------------------------------------------- >Lost Password: >http://www.tech-assist.org and select "Login Problems?". >Email Archives: >//www.freelists.org/archives/techassist/ > > > -- Philip Bader Jan Phyl TV Inc. (estab. 1976) 3420 Recker Hwy. Winter Haven, Fl. 33880 Fax (863) 299-8821 email: tjanphyl@xxxxxxxxxxxxxxx ----------------------------------------------------------------------------- Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/