PVR-9200T just outputting black screen

Up until recently my PVR-9200T was working fine. Recently though, all outputs (SCART, S-VIDEO) show nothing on my TV but a black screen. I have tried on three separate TVs to no avail.

The Humax does the following:

1) Shows the time fine in standby.
2) Power-cycles at 4am every day looking for an update.
3) Shows the tv channel name on the display on the front, and I can cycle through channels with the remote. Yet still just a black screen every time.

Does anyone have any experience of being able to fix this issue?

Thanks in advance.