Denton, I would definitely power off, unplug the DC power cord at the rear of the Orion and take a good look at the contacts. There is a very good chance that display and your sub receiver issues are
I got the decent caps for the power distribution board rebuild..I will make the rig a nice project for next winter..pulling, cleaning all internal connectors with dexoit, checking continuity, and wir
Denton, The next step I would do is clean the contacts on the large cables that connect to the Orion front panel. After the covers are off the Orion, remove the screws holding the Orion front panel.