Zenith C730 making very loud buzz

[ldatlof]

Hi everyone. I am attemting to restore this nice Zenith radio. So far I have changed all the capaictors, and took out the selenium rectifier and replaced it with a Radio Shack 1N4005 diode (with 100 ohm 10 watt resistor). All the tubes are good. When I turn it on I get a really loud buzzing noise that gets louder.

I wonder if I used the right type of rectifier. The schematic has a weird symbol for the rectifier. Not like my other Zenith radio schematic. I have attached the schematic. Any thoughts on what the problem may be is greatly appreciated. Thanks.