Aura Amplifier Repairs
Aura Evolution VA-100
This hummed and distorted, everything looked fine inside but turned out it was unstable and probably oscillating at some MHz. Reason being; the fusible 10ohm resistors in the Zobel circuits and the 0V return to chassis were open circuit.
Aura VA-100
This had a blown 2SK1058\J162 (FET), a burnt up 2K2 resistor and 470ohm presets also needed replacing.