|
How about current between the B+ terminal (250 volts?) and the rest of the set? Thinking that there could a lot of ripple current on the input to the filter cap that is contributing to the resistor heating (are the filter caps the correct value?) but perhaps the "fee air" dissipation of the 25 Watt resistor is quite low, and 197 degrees is "normal".
somewhat stumped,
jr
|