This has got me puzzled! Unit comes on but with bowed sides (pincushion). I found R571 to be open and Q505 shorted. I replaced these and checked all surrounding components but still have the same problem. Base on Q505 measures -17.2 volts, emitter -16.5 and collector 27.7. Changed IC 531 no luck. Anyone have any ideas? I have no print on this and if I had one, I could probably find the problem pretty quickly, Neil TV Doctors 108 W. Main St. Monroe,Wa. 98272 360-794-6469 Help make your TechAssist online repair tips database better! Submit your fixes here: http://www.circuitwork.com/techassist/tip/#tips To unsubscribe write to: techassist-request@xxxxxxxxxxxxx with unsubscribe in the subject line.