This Panasonic 20" came in with narrow vert. deflection. IC451 LA7835 had bad solder all pins. Resoldered no help. Replaced IC and every lytic cap I found around it. May now play with good pix until warms then goes into an erratic vert roll and loses heigth at same time. Cold spray seems to clear it on diode D455 next to IC. Diode is blue body with wide brown,then red stripe. What the heck is it?. Not sure if diode D455 is cure.Need help. Started out a simple deal. Phil Bader -- Philip Bader Jan Phyl TV Inc. (estab. 1976) 3420 Recker Hwy. Winter Haven, Fl. 33880 Fax (863) 299-8821 email: philbad@xxxxxxxxxx ------------------------------------------ To REMOVE your email address, click here: http://www.tech-assist.org/unsubb.html To CHANGE your email address, click here: http://www.techassist.net/forms/change.html ------------------------------------------ ***NEW*** Tips Added Instantly!!!*** Submit Repair Tips here: http://www.tech-assist.org/secure/tip/