Excessive Noise Phase 90 (video demo)

[FL6]

Any idea on how to identify the source of this noise?


It only occurs when the phase is on, no issues when it's off.

I replaced the switch, cleaned and resoldered the jacks and pot. Resoldered a few pieces on the board including the battery terminals.

Toggling the pot has no effect.

I bought an original MXR Phase 90 and used it for one gig with no problems and now this noise problem has surfaced.

http://i.imgur.com/lfdGmj6l.jpg
http://i.imgur.com/av5J6pQl.jpg
http://i.imgur.com/gYwsZlvl.jpg