my P500 output from the filtered AC is fine. the fuses are fine too. however, the regen outputs are low. in auto mode i get up to 70 volts AC (58 right now; seems to go up a bit when the unit warms up); in the other modes it drops about 10 volts.
i opened the case and see nothing dramatic. i used my peak ESR meter to test the large caps on the regen circuit.
C5 3610uF 0.58ohm ESR (some evidence of deterioration)
C3 3652uF 0.6ohm ESR
C1 3464uF 0.56ohm ESR
C2 5992uF 0.08ohm ESR
C4 6440uF 0.08ohm ESR
C10 6354uF 0.1ohm ESR
I called PSA and was told you no longer service the P500s. I was told you could send the schematic
I have a local tech who can hopefully look at this but has COVID; hoping for his full recovery!
if it is just replacing the power supply caps i can do that myself
any tips would be appreciated.