06-12-2013, 03:15 PM
Welcome.
1. Have you checked all your tubes? In particular 7J7? Maybe shorted. If not, see if anything around it is shorted.
a)Try to remove the tube and measure from the Plate of this tube (or from the end of that 1K resistor closest to it) to GND (chassis). See if there's a short.
b) If there was no short put the tube in and repeat the measurement. If yes - replace the tube.
c) If there is no obvious short with or without the tube, with the tube out power it up and see if it still smokes
2. When a resistor smokes, replacing it with a higher power one is usually not an answer.
3. Actually before you even put the tubes in and all that why don't you first see if your rectifier is OK etc.
1. Have you checked all your tubes? In particular 7J7? Maybe shorted. If not, see if anything around it is shorted.
a)Try to remove the tube and measure from the Plate of this tube (or from the end of that 1K resistor closest to it) to GND (chassis). See if there's a short.
b) If there was no short put the tube in and repeat the measurement. If yes - replace the tube.
c) If there is no obvious short with or without the tube, with the tube out power it up and see if it still smokes
2. When a resistor smokes, replacing it with a higher power one is usually not an answer.
3. Actually before you even put the tubes in and all that why don't you first see if your rectifier is OK etc.
