Hi @audionewbie ,
Here’s the No Power troubleshooting flowchart, taken from the [https://elektrotanya.com/pioneer_vsx-824-k_vsx-1024-k_vsx-1029-k_vsx-44_av_receiver.pdf/download.html|service manual] for the receiver. Be patient when you go to download the manual as it takes a little while to go from ''processing'' to ''download'', after you have passed the security test and then clicked on Go to Download, below the document box.
Like all good manuals, it has dis-assembly instructions, full schematics and a parts list.
Hopefully this will help you to find the problem
[image|2255533]
(click on image to enlarge for better viewing)