[sobell1980]

I have news! We are receiving stations loud and clear although not out of the woods yet.
Using the croc clips I bench tested the heater on the uu6 and it glows beautifully. This was a direct supply straight from the transformer 4 volt winding. Do the same test from the underside of the valve socket and nothing. I've soldered all the joints again on the uu6 valve socket and where it joins L18 . Still nothing. And this is no supply from the socket tags and not the pins. I fitted the valve again back into it's socket and gave a supply to the heater socket tags pins 1 and 8 direct from the transformer. Loads of HT and after fixing a broken speaker wire the set burst into life. So between the mains transformer 4 volt winding and the socket connections I've a broken or bad connection. Possibly something to do with L18 but I ran out of time tonight.