Make : Toshiba Model : 27AF41 Problem : Shuts down on power up. Lifting the collector lead on the horizontal output lets the set stay on with a B+ on the collector pad of 137VDC......which looks to be OK as the set looks like it is designed to regulate at 125 with a full load on the supply. Changed the flyback. Collector pulse looks good driving it with a Sencore TVA92. No excessive load shown We do have the schematics we downloaded from Toshiba but are confused a bit on this one. I see a Fail Safe circuit on the print but I'm a bit miffed as to it's exact operation......it this another type of X-ray protect? Anyone have experience on this newer chassis? ================================= Jeff Stielau Shoreline Electronics Repair 344 East Main Street Clinton,CT 06413 (860)399-1861 (860)664-3535 FAX jstielau@xxxxxxxx ================================= ----------------------------------------------------------------------------- Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/