Does anyone have a training manual that explains the theory behind Zenith's PIP sysytem used in the Model SL3585BT TV. I have one that has a pip but no main picture. The IF, PIP modules have been replaced. Also IC U2900, all the caps in the SMPS have been changed. I am trying to repair this at no cost to a school. Any help would be appreciated. I can download just about anything you care to send me and anyway you want to send it. Any help will get you the thanks of a nice bunch of school kids. Hollis Bates,Field Engineer-retired, Lewiston, Maine,HSWAD@xxxxxxx ----------------------------------------------------------------------------- Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/