Markbass 151P

[tom1946]

Hi all i've just driven 100 miles to pickup a new 151P combo, I tried it in the shop and it was fine.
I just got back and plugged it in and got a loud crack as the preamp came online. If I turn it off and on it still does it, sometimes loud and sometimes quiet.

should I worry?

cheers.

[tom1946]

I've got them picking it up monday for a refund.