Hello friends. I working with computer monitor. It has no picture. No HV .Heater filements work fine glowing . but no high voltage. can not find the B+ for Q604 (hot) on EHT board. heaters do response to video input. But no hv. I do not have print.I hear "tweet " sound 7 seconds after push power button. please help. DAng TVCR 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.