red plate

  1. P

    Red Plate,Tube runaway, glowing screen grids

    I've read that a little plate glow is ok as long as it doesn't "runaway" I just purchased two new sets of tubes (6l6GC coke bottle chinese) and JJKT77) Both exhibit plate glow that is almost the entire crease in the winged part of the plate (very narrow but vertically long). How long do you wait...