I originally had the bright/retrace symptom.Replaced resistor on CRT PCB. A few weeks later came back.Vertical about 6" wide. Sides distorted also. Yoke seems to be making a louder than normal buzz. I changed the vert output STV9379 with OEM part. Same. All diodes around OK, all 1 ohm resistors check OK. A capacitor? Any knows histories like this with the 25F800? Customer, of course is calling. Need assist! Phil Bader -- Philip Bader Jan Phyl TV Inc. (estab. 1976) 3420 Recker Hwy. Winter Haven, Fl. 33880 Fax (863) 299-8821 email: tjanphyl@xxxxxxxxxxxxxxx For Professional Technicians Only ***************************************************************************** Classifieds! Buy or Sell! http://sell.tech-assist.org The Tech Address Book: http://www.tech-assist.org/secure/tip/contact.htm Add a Repair Tip Here, or Change/Remove your Email Address: http://www.tech-assist.org/secure/tip/main.htm Lost Password: http://www.tech-assist.org and select "Lost your Login Info?". Email Archives: //www.freelists.org/archives/techassist/