KEL84 tranny hum on L channel, plus click at switch off

[buddam]

Hi all

I've spent yonks tweaking, putting in new caps & res all over the place in PSU, Phono II and KEL84. Just when I thought I'd finished for now I note a hum on L channel and an increasingly loud click at switch off. I guess all the fiddling about inside and turning it upside down will not have helped.

What should I look for apart from the obvious? I should add that the trannies hum a littl emore than they used to when standing next to it, not just through the speaker.

Is there anything I could add as click suppressor?

Thanks

Adrian