Ok so the 512K showed up and as promised when turned on no chime or bong. Lines on screen then whines and switches to kinda checkerboard. Brightness knob works, adjusting height and witdh on board works. So does that mean flyback? I assume that from the switching and whining. I havent had many issues with analogs before but this one looks as clean as I have ever seen. No warm spots on the plastic. I moved the power connector on the analog as my plus had an issue with that once , didnt change anything.