point of interest i recap my 14years old djm800 psu.last 2-3 months gets too hot the mixer on psu side.open it after two hours of use and touch the big filter cap and the near mosfet heat sink was very hot.under the board i see three hot spots that is discolored from excessive heat. replace all caps with nichicon GU big filter cap and all the others with nichicon KY and panasonic FR now is running cool and sounds better.