I'm having great difficulty in locating a good service manuals that can help me troubleshoot both of these units.

both units are getting power, but only the Technics' display works. I'm hoping with a service manual I can at least rule out some basic (ie common and easily fixed) problems.

Any help would be appreciated!

Gotta bump this

I've got a few days off this week and would love to tackle this while the kids are at school...so they won't laugh at me

Could anyone here help me look like a genius and allow my to say "HA I TOLD YOU I'D FIX IT"  to my kids?