I believe I found the answer on audio asylum's tube forum. Apparently this is a fairly common problem for SE40's. The bridge rectifier D9 has to be replaced. When it fails it shuts down the DC power to to the two 6SN7 heaters and the led on the front panel. There is also a new Golden Tube Audio support site on Yahoo. http://groups.yahoo.com/group/golden_tube
You can also find the elusive schematic for the SE40 on this site.Yahoo!!!!!!
You can also find the elusive schematic for the SE40 on this site.Yahoo!!!!!!