Originally Posted by hypnos1
Will certainly have to keep a very close eye on those resistors...wish I knew exactly where they would be located inside the unit, though...
This is my MK IV board, the SE should be the same except for upgraded capacitors and jacks.
The two resistors circled in red are the 150Ω cathode resistors that Artsi spoke of, these resistors are 1 Watt. The two White Square resistors on the right edge of the board are 5 Watt sized just for reference.
If running the 6AS7's as power tubes with the 1W resistors draws too much current, the most that would likely happen is you would just burn out those two resistors. The heat / flame generated when these resistors burn would cause much stress to the two caps on either side. If it doesn't cause any trouble to the circuit board underneath as well.
This is a 1/4 Watt resistor with too much power through it, the bigger the wattage the better the burn. :)
So What Do?
New resistors come with long legs, you could put 5 Watt or 10 Watt resistors in place of these 1 Watt's for a few dollars each. Bend the legs and the resistor would have to be mounted in the air a little as it would not fit in the other resistors space.
Then the resistors would not burn out, the transformer would...