BOB, Diagnostic LEDs of the power supply. D429 located on the front edge of the module ON: Normal (light whenever AC is applied) BLINKING: Problem with the 15vdc standby supply. D430 located at the top of the module ON: Normal (light up at power on command) OFF: No 130vdc supply is present Check horiz output and emitter resistor also shorted CRT (B) If you need more info I have manual, just ask. Marty Marty@xxxxxxxxxxxx -----Original Message----- From: techassist-bounce@xxxxxxxxxxxxx [mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of bob Sent: Thursday, January 01, 1998 2:33 AM To: techassist@xxxxxxxxxxxxx Subject: [TechAssist] HELP- MAG. PN3046 A104 PTV420-A104 dead Hey guys Anyone have any data/tips on this one or a scan of p.s. would be great MAG. ptv-420-ah01,found shorted reg.Q401 change it and the reg.controler ic.401 and d419.Chopper still not switching ,There two small LEDs on the p.s. board what are the for (statis) ? thay are off .any help would be appreciated.............bob HAVEA GREAT DAY! ELECTRON WORLD GUTHRIE KY ------------------------------------------ Help make your TechAssist database better! Submit your fixes here: http://circuitwork.com/techassist/tip/#tips ------------------------------------------ To UNSUBSCRIBE your email address, click here: mailto:techassist-request@xxxxxxxxxxxxx?subject=unsubscribe Or send a BLANK email with unsubscribe in the SUBJECT field to the address above. ------------------------------------------ Help make your TechAssist database better! Submit your fixes here: http://circuitwork.com/techassist/tip/#tips ------------------------------------------ To UNSUBSCRIBE your email address, click here: mailto:techassist-request@xxxxxxxxxxxxx?subject=unsubscribe Or send a BLANK email with unsubscribe in the SUBJECT field to the address above.