[Titan1a]

I don't recommend attempting to directly replace the 6X5 with 1N4007 diodes. Tubes usually provide some sort of inrush limiting that might damage other components. I use a solid-state replacement from tedweber.com on my Zenith 7S363 radio. An inrush limiter is included in the copper-colored tube form. Also, no soldering! Plug and play for years providing energy savings and protection. I had Walter Beers procure mine and he was very satisfied as am I.