Hello all, I'm new to the forum. Pleased to be part of this awesome community. I've got a problem with my Ampeg SVT-CL and couldn't find any answer through the search function. Everytime I go from standby to playing I get two short pops from my cabinet. After that everything plays clean and without any noise. When I look a the bias light while the popping occurs, they flicker red after that everything is green. I've checked the powertubes with a wooden stick, but don't get any noise or any weird sounds. Any suggestion what could be the cause? Ps. Sorry for my wonky english.