I've had my Sony RDR-HX510 hard drive dvd recorder for about a month now and up until this week it has been working perfectly. However, all of a sudden the Timer Record function seems to have stopped working ... it will record ok if I do it manually, but when I set a timed recording nothing happens. I've been through all the trouble shooting possibilities mentioned in the handbook (eg clock incorrect, has there been a power cut, enough space on dvd/hard drive, is PDC/VPS funcion on etc) and as far as I'm aware have ruled them all out. Has anyone else experienced this problem, and can anyone suggest what it could be? I'm sure it's something that I'm not doing properly.