Hum when using Ac Adapter

[davydgarcya]

Hello,
is anyone having problems when feeding the Br with Ac adapter? Whenever I use it I hear a considerable hum noise with guitar. I´m using the offical Boss ps power suply, but tried with different ones and still the same. Also changing the high quality cable I´m using and the guitar for another ones. In another different location still the same, it´s seems like a ground issue, when I touch the cable it dessapear, the same If I run with batteries....
Any suggestions?

[guitarron]

Don't like the sound of that-You may have to return/exchange it-is it under warranty?
If you are using a known good guitar and good cord in the guitar input of Br and it makes noise regardless of the effect preset-then stops if you touch cable-Most likely is a grounding issue

[davydgarcya]

Not under warranty, second hand issue... I´ve heard from other users having the same problem. Is that the case, or when you use power adapter there´s no hum at all?

Thanks in advance.

[Pedro]

Welcome!

That happens with the guitar dedicated input right? With the line In stereo its good, right?

[davydgarcya]

Hi Admin!, thanks for helping...
The sound is a very high pitch one whenever I use the Psa boss adapter (no problem of the adapter or the electrical wire, I tested in other place changing the adapter and still the same). I said that touching the cable dissapear...but not. No matter what input I choose keeps hearing. Even turning volume down.
Ever has heard of it?

Thanks!

David

[davydgarcya]

Updates: I can record that sound, if I use mic input and record, the hum is there when I playback. If I choose guitar Input, the hum is just in one channel, left channel (strange, isnt it??). Buf If I run on batteries, no problema at all, no hum, nothing.
Is driving me crazy...