[TenTec] 9420 VS Switcher

[Gary Hendricks]

I have been looking at the schematic for my 9420 supply and it looks 
like the output of the series regulators have no over voltage 
protection. If my memory doesnt fail me I think when I was working at 
TenTec I remember hearing the service guys talk about pass transistor 
failures on this supply being somewhat common.

Has anyone used one of the high current switching supplies on the 
Hercules II amp? I see some avail at 14 volts and 100 amps with every 
protection built in.

Thinking about letting 9420 go and using one of the switchers because of 
the protection built in

Thanks

Gary K4MT