RDR-GX315 was accidentally reverted to "Factory Settings" ... now we can get sound but no picture and progressive is turned on and we need to turn it off.
If your TV has progressive scan capability, you may be able to view the on-screen setup menu via the recorder - select 'SETUP' press 'ENTER' on your DVD recorder's remote to bring up the menu - with the remote arrow buttons, scroll down to select 'VIDEO' then 'PROGRESSIVE' - highlight it then set it to OFF (you cannot do this with a TV that does not support progressive scan from this unit). Once done, exit the setup menu and it should work fine with all the other settings. If your TV doesn't have progressive scan, connect the DVD recorder to one which does and turn its progressive output off there. I assume you still have the user manual for your recorder (if not, you can download it online for free as an Adobe document - .pdf. Page 73 details the setup steps for this model). I hope this tip helps somewhat.