Is it just me , or does the location of the 5U4 so far away from the power transformer look a bit odd ? I guess I'm just used to seeing the rectifier being placed way closer to the transformer , heck sometimes even mounted right on top of it , VS seeing it on the other side of the chassis being fed by a bundle of wires stretched across the top of the chassis like that .
It almost looks like a factory kludge to me , I wonder if maybe the chassis was originally designed to work with a separate power supply chassis , and this was Zenith's way of putting the power supply onto the main chassis as a quickie production change ?