Hi to all
just finished a point to point g9 pre and I'm having some hum coming and going at about 10-20 sec cycle , between -70db and -50db . heaters are 12v dc from a seperate regulated PS. Strange thing , its not a regular cycle . will apriciate any advice
thanks
Max
just finished a point to point g9 pre and I'm having some hum coming and going at about 10-20 sec cycle , between -70db and -50db . heaters are 12v dc from a seperate regulated PS. Strange thing , its not a regular cycle . will apriciate any advice
thanks
Max