I have just inherited a Sanyo CPP3024-00 (reference number for servicing) television, looks at least ten years old. Four of the six available free to air channels are tuned in perfectly, the other two are either extreemly fuzzy, or not there. How would I remedy this, i.e. tune, or find those other two channels (7 and 9)? Thanks to anyone who can help:)

You might try a signal amplifier or booster. Fuzzy signals might be nothing more than your distance from the signal source.

Do you mean that the dial only handles 1 through 7? Is there a UHF Dial as well?
You might want to rethink the age of this unit.