I understand measuring plate voltage, dividing it by 70% of the tube's rated dissipation, and getting the answer in amps... but how is this translated into volts measured at the test points? I've found info online (mostly re: guitar amps) that talks about transformer resistance or cathode resistor value... am I barking up the wrong tree?
I bet this is a very stupid newbie question and I apologize if it's been covered before. If so, point me at a useful old thread and I'll be happy! (The existing threads I keep finding concern bias problems or bias for one particular tube.) Fortunately I have no amplifier problems - just a lack of knowledge. Thanks you in advance for your assistance!