Tuner and pedal in one enclosure problem

[Lino22]

The Tuner parasite signal eventually leaked through a grounded 2 mm aluminum shield made from an old BB enclosure. The buzz was very quiet and audible only when my amp volume was all the way up, but anyway. I couldn't even see it on my oscilloscope. However, I found a way to install a power kill on the rotary selector switch, so there is a happy ending to it.

[amptramp]

I have taken a few electromagnetic compatibility courses ( the Don White courses are excellent and thankfully they were funded by the company I was at) and one thing they say is the best way to eliminate noise is to not generate it in the first place.  A power kill switch always going to be the most effective answer.

[Rob Strand]

The Tuner parasite signal eventually leaked through a grounded 2 mm aluminum shield made from an old BB enclosure. The buzz was very quiet and audible only when my amp volume was all the way up, but anyway. I couldn't even see it on my oscilloscope. However, I found a way to install a power kill on the rotary selector switch, so there is a happy ending to it.

Sometimes it turns out that way.

I have taken a few electromagnetic compatibility courses ( the Don White courses are excellent and thankfully they were funded by the company I was at) and one thing they say is the best way to eliminate noise is to not generate it in the first place.  A power kill switch always going to be the most effective answer.

It seems like there's a non (magnetically) shielded inductor on the Tuner board.   In theory you could replace it.