I'll start from the beginning. I had no picture no HV on monitor, found HOT to be dead, replaced HOT fired up, tube not lit, reseated all the ribbon connectors from the Yoke, fired up monitor displayed White Horizontal lines 1 inch across the full screen top to bottom, ran on bench, powered on and off several more times, had HV, were good to go so back into the DDR, powered up in the DDR, monitor dead again Huh?, back on bench HOT is good, no HV, started checking voltage across the caps outside the primary section, found low DC voltage across the caps outside of the Primary section, have A/C but low DC readings.
I decided to replace the switching VR6511 on the large heat sink, power up, chassis starts to make a faint fast paced ticking sound, almost like it's buzzing but there are breaks in the audible low pitch noise, this time the White lines only appear when I turn the monitor off, discharge the annode, loud pop so I had HV, not sure where the ticking sound is coming, but I do know that the chassis should not produce any audible noise when running. It has made this same sound from phase one when I first installed the first new HOT.
Basically it's eating HOT's not right away, likes to savor them first teasing me with a lit tube then blowing the hot eventually, after installing 3 HOT's, 1 new 6511, reflowing the heck out of everything, finally gave it one more stab, and it starts smoking from the chassis, something new, and of course HOT #3 is fried, inspected the chassis, found nothing fried but it smoked pretty good, smoke for me signals "I'm Done" I did inspect the outer Flyback casing, everthing looks good.
In summary, I have had HV on and off, audible noise from the chassis, smoke 3X from the chassis, replaced 3 HOT's, 1 VR6511, All caps checked for ESR, Fuse has remained good, never blown, there is no schematic and I can't seem to even locate a replacement flyback, so if you have any report as to how they fixed yours and what was replaced that would be great, but at the moment I'm on the bench lying down with this beauty.