My Panasonic DVD+VHS recorder has suddenly stopped recieving a signal. Aerial still works from dvd recorder to TV.

No signal from this combo unit can mean either one of 2 things; the program information didn't update correctly while unit was in standby, so some digital channels may be missing or scrambled, or you have selected a HD channel by mistake during use (this series does not have a HD tuner, it is only SD which would also produce the no signal issue).

Going on the first possibility, you can reset the unit back to factory default. To do this, while it is on, press and hold (on the front panel, not the remote) CH UP and CH DOWN buttons together until 'SETUP' appears on the display. Once setup begins, and the unit searches for DVB channels, release the buttons. With the remote, follow the subsequent options afterwards, when prompted. Check other menus, then exit. This should restore your unit to all SD digital channels available.

Assuming the tuner works generally, this reset procedure should help (it works perfectly for Australian models of this series).