07-08-2011, 12:16 PM
Josh,
Electrolytic caps can 'explode' one their own without an external cause...seen many of these over the years. However, I would very carefully check the values of resistors R11, R3, R13 & R14 in the power supply section. Also, if you have access to a tube checker be sure the tubes are good and not shorted especially the rectifier tube and the audio output tube. The Nostalgia Air schematics gives a list of the resistances from the tube pinouts to ground. Check these out to see if they are close to the chart. Good luck.
Electrolytic caps can 'explode' one their own without an external cause...seen many of these over the years. However, I would very carefully check the values of resistors R11, R3, R13 & R14 in the power supply section. Also, if you have access to a tube checker be sure the tubes are good and not shorted especially the rectifier tube and the audio output tube. The Nostalgia Air schematics gives a list of the resistances from the tube pinouts to ground. Check these out to see if they are close to the chart. Good luck.
