If all will be correct its going to ask around 2.7-2.9R. Rset way different than 2.8R center value is wrong.Tried, hard to reach such low resistor value.
Voltage at filaments solid as a rock, shortened wires between the mains filter cap & the LM317T, also soldered two 5R6 10W in parallel directly at pins opt & adj (sorry the big resistors) are the only on hand, on monday I will buy 5W and change.
Attachments
Not, VRef 7.62 tester probe + to output & tester probe - to GND. 6.317V at filaments, Rset resistor 2R74.Keep in mind the particular 317 Vref value you now measure so to calculate what Rset more predictably. Still at 1.2416V?
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