How do I discharge the capacitors in my PS audio P20 ?

noromance... this is do as I suggest not as I do. I have a 12 guage wire open at both ends taped to two round dowels and I just touch them to each pole. You do this at your own risk as the capacitor may go away. I haven't had it happen but it can. Now if I had suggested what I do, I would have 30 on this blog telling me how dumb I was to suggest such a thing.

How will the capacitors be recharged with no power applied to unit. I worked as a audio repair tech for 40 years and it always worked to drain off power supply charges 

bmbmzig

How will the capacitors be recharged with no power applied to unit.

They won't, of course. I misread the question.

Shorting a high uF cap directly is a bad idea. You can in fact ruin an otherwise good cap.

Also, worth noting the voltage rating on a cap. If it’s 50V say or less, it’s not that dangerous.

If you don’t have a 10W resistor, just use a bigger Ohm resistor and wait longer. What’s the big deal?

Lastly, why on earth is someone who doesn’t know how to measure or discharge a capacitor safely getting into the guts of an appliance?

Just curious. What "wire" came loose, and why? Was this a quality control issue with PS Audio? Wires "coming loose" in a power regenerator, having high voltages inside don't sound good. An end user who is not a legit electronics tech attempting to mess around "fixing it" doesn't sound like the smartest idea either. Just sayin'. If you are concerned about safety (and you SHOULD be!) take it to an electronics tech and get it done right with some peace of mind.