D603 has shorted and has also caused ground print trace to open. Replace zener (part # AD300670), and using a jumper, re-establish the gnd connection (from anode to minus side of C605). See above.... Unless there is a later Technical Bulletin, says nothing about discarding this diode. -Ed- Tel-Tek Electronics Ontario-Canada teltek3@xxxxxxxxxxxx teltek@xxxxxxxxx -----Original Message----- From: techassist-bounce@xxxxxxxxxxxxx [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of MDileo0000@xxxxxxx Sent: Saturday, October 23, 2004 10:45 AM To: techassist@xxxxxxxxxxxxx Subject: [TechAssist] Re: Toshiba TV Model 27A43 (ORION) wavy beat pattern FIX Robert, you posted: <<<Remove D603 Zener diode and discard, also check continuity of ground, anode D603 to IC601 pin 57>>> Factory recommendation? Dominic DIleo Atlantic TV Freeport, Maine ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In a message dated 10/22/04 3:50:51 PM Eastern Daylight Time, tvservice@xxxxxxxxxxxxx writes: << Toshiba 27" TV built by Orion Model 27A43 Chassis M3N426 Posted this to Tech_Assist tips data base yesterday Horizontal size narrow and wavy interference beat pattern in picture Remove D603 Zener diode and discard, also check continuity of ground, anode D603 to IC601 pin 57 May need to adjust Hor Size in service menu Service menu access hold volume down on tv and 9 on remote select parameters with ch+ - and adjust values with vol+ - power off to save and exit menu hth someone Robert tvservice@xxxxxxxxxxxxx H & H Electronics Inc >> ------------------------------------------------------------------------ ----- 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/