After I have recorded from the camcorder to the dvdr the system goes through the motions butt when I try and replay the dvd it just flashes blank on the display and reverts back to the tv channel
Do you know if it is the TV channel coming from the DVDR that it reverts to ... or does the TV switch away from the DVDR to its tuner channel?
If it is coming from the DVDR then changing channels on the DVDR remote should display the changes on the display.
If this is the case, and whilst in this status, what happens if you put a known good playable DVD in and try to play it.
If it is the TV channel that is reverted to, can you force the TV to the correct input to see the DVDR by using the AV input selection button.