cable interference?

hi all,

i run a 5 channel system. i have a ps audio ppp, theta dreadnaught 5 ch amp, cal ssp2500, jbl s400 sub amp, and a sony x7esd player. i use quite high end power cables and interconnects(verastarr/ps audio/slinkylinks). it seems that i have buzzing and interference noise...especially the next day after hook up. i mean if i reset the components there is minimal noise/buzz. i can listen for many hours perfectly. after i sleep, the noise the next day is quite loud and i have to reset again.

my question is can the interference get worse overnight?
does the interference build up over time and get worse?

yes i do try to keep the power cables and interconnects separated the best i can but they are still very close together with 5 components running.

i dont know where my problem is...old equipment or cables need better shielding, i need advice please.

thanks so much
My guess is some component has a bad capacitor.
It works OK at first, but after being left on it starts failing.
It has nothing to do with cords or interconnects