Dead set with the led flashing 7 times. The fault is on the Y-Sus board (TNPA3106).
D621 s/c (SF20LC30F10) and it is nla. It is a three legged 300V 20A super fast recovery diode.
JS601 fusible link o/c.
Q606 2SK3795 s/c.
Many thanks to Norman Raeburn who sent the obsolete diode.
The set is now in working order.
Ian Harrison (Sound and Vision)
ianharrison40@hotmail.co.uk