Have an issue with the preamp on this, was working fine after changing out a few caps and giving it a clean but agter giving it another clean as it still smells of cigarettes have now got an issue with the amp , no sound unless at very high volume, get some sound through the right speaker but very low, have used another amps preamp and have a working channel through the right speaker so rather odd symptoms , also noticed a cap bulging near what looks to be a power supply transistor , no schematic to be found only the a-06 which has the same more or less power amp section but little else .
