DaveC wrote:


Also, I scoped the PS voltages.
http://i44.tinypic.com/rtzuyo.jpg

Is 0.5v noise excessive? Shown is 5v supply measured at test pin on PS
pcb.

I'd get friendly with some Pioneer tech support types and secure a
schematic.

Others have similar noise except 139v: 12v (0.5v noise), 60v (0.5v
noise), 139v (5.0v noise) 170v (0.5v noise).



Whoops. The same noise on all but one supply sounds like a
reference problem. Are you grounding your probe? This is where a
schematic becomes invaluable.