Argh! I have two of these boards from Asteroids Deluxe machines that have had a burnout on the Y deflection side. I have rebuilt both of them with the exception of VDR 600. Does anyone know what the specs need to be, or otherwise what a suitable replacement would work for this particular varistor? The manual shows both VDR600 and VDR700 being the same, but there are no identifying stamps on the components.
