Jeff I had a Toshiba a while ago that was shutting down like that and it turned out to be a leaky shutdown transistor. I think that was the failsafe circuit , but not sure. I'll Send you the circuit to your address. Al Marquardt ampm@xxxxxxx Al Marquardt Electronic Repair 206 W Main Girardville Pa. 17935 ----- Original Message ----- From: "Shoreline Electronics" <jstielau@xxxxxxxx> To: <techassist@xxxxxxxxxxxxx> Sent: Monday, May 03, 2004 3:48 PM Subject: [TechAssist] Re: Toshiba 27AF41 Shuts Down On Power Up > CRT checks good and with CRT board , yoke and anode....disconnected , it > still shuts down. > > ================================= > Jeff Stielau > Shoreline Electronics Repair > 344 East Main Street > Clinton,CT 06413 > (860)399-1861 > (860)664-3535 FAX > jstielau@xxxxxxxx > ================================= > ----- Original Message ----- > From: "Peter oliver" <oliver_peter1@xxxxxxxxxxx> > To: <techassist@xxxxxxxxxxxxx> > Sent: Monday, May 03, 2004 3:12 PM > Subject: [TechAssist] Re: Toshiba 27AF41 Shuts Down On Power Up > > > > Have you checked the CRT For a short? > > > > Peter Oliver > > Tucson Radio TV > > > > > > From: "Shoreline Electronics" <jstielau@xxxxxxxx> > > Reply-To: techassist@xxxxxxxxxxxxx > > To: "Tech Assist" <techassist@xxxxxxxxxxxxx> > > Subject: [TechAssist] Toshiba 27AF41 Shuts Down On Power Up > > Date: Mon, 3 May 2004 15:05:59 -0400 > > > > > > 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/ > > > > _________________________________________________________________ > > Getting married? Find tips, tools and the latest trends at MSN Life > Events. > > http://lifeevents.msn.com/category.aspx?cid=married > > > > > > -------------------------------------------------------------------------- > --- > > Lost Password: > > http://www.tech-assist.org and select "Login Problems?". > > Email Archives: > > //www.freelists.org/archives/techassist/ > > > > > -------------------------------------------------------------------------- --- > Lost Password: > http://www.tech-assist.org and select "Login Problems?". > Email Archives: > //www.freelists.org/archives/techassist/ > > ----------------------------------------------------------------------------- Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/