I've had a Panasonic SA-HT70 for about 2 years now, and it's been
great... Unfortunately it's just started to play up by trying to read
and saying
------
then
0-----
then
00----
goto start

After about 5 times, it says "NO DISC". It does this for all DVDs and
audio CDs.

I hope this is just overheating (28 degrees inside right now) so I've
a fan on it with it unplugged but could it be anything else?

Thanks,
Dylan