Thanks. I have replaced all capacitors in the PSU but still no hifi sound. Head is clean and produces a good picture but only linear mono sound.
Here is the machine:
https://www.dropbox.com/s/vqg9lsjhicde7na/IMAG0019.jpg and
https://www.dropbox.com/s/j6eoeqghtdlmays/IMAG0018.jpg
I don't suppose that there are any stock faults to check first are there?
Hope to get it running.