Francisco CE-2 issue: background noise

[rocker-D82]

I build this amazing chorus!
I report it here: http://www.elixant.com/~stompbox/smfforum/index.php?topic=38153.msg310919#msg310919

I have a problem. Using it with battery doesn't give me problem. I thing there's a strange background noise, but I think it was normal. When I use my power supply, my effect become unplayable. There's a 50hz cycle... to much to play! 

I check C30 because i find a sort of jitter when I misure voltage to positive tip. I change it... the same beaviour!
I change D7 with 1N4007... same beaviour!
I change Q4 and Q5 from 2N5088 to 2N5089 in order to lower noise... same beaviour!

Any idea?

[Fp-www.Tonepad.com]

The problem is probably your power supply. Try another one.

[rocker-D82]

I check C30 because i find a sort of jitter when I misure voltage to positive tip. I change it... the same beaviour!

I think the problem is another. I use this power supply with a lot of other pedals without problems. But I look a jitter on C30 (positive side) with battery, too. Can be a "broken" MN chip who introduce an eccessive power request??