Have just started replacing caps on this 800. The power amp boards have new caps and transistors (KSC1845) two each. Also replaced the axial caps on the bottom of the unit and the large radial caps (4) as well. When I plug it in, the transformer hums and the power transistors get really hot - fast. I am thing about redoing the cap mounting around the transformer. Checked that nothing is in backwards - 2x. Was hoping for good result. Anyways - struggling through.