66 rca new vista

[timmy]

hey guys just a quick question i have a 66 rca new vista that i recapped but from day one when its turned on the screen lights up bright the way it should and sound is present but the picture is like all white and during about 20 seconds the picture fades in perfect. could this be a video output tube that is taking alittle longer for the heater to heat or lagging behind the other tubes. because i have had 2 of the same tubes and the same result testing and one would take longer to show a result then the other. call me crazy but was wondering... thanks