Bottlehead Forum

Bottlehead Kits => Crack => Topic started by: wiener4hire on August 27, 2014, 06:15:36 AM

Title: Noises that change when table is tapped and some other things.
Post by: wiener4hire on August 27, 2014, 06:15:36 AM

Alright everyone, a while ago i made a post here about a constant ~50hz buzzing noise emitting from my crac, but i resolved that recently by getting a new 6080 tube. Now i have a new problem. When i first exchanged the tube everything worked great, but after a few hours i noticed a buzzing sound again. I resolved that by tapping the crack lightly. This issue appeared again later on, and has gotten more severe, so that it can start simply when i place something on the table, and by tapping the table or crack i can make the frequency change and sometimes go away. On top of this problem, it has started making very loud popping noises when i turn it off, and i mean so loud that my ears are ringing afterwards, which can't be good for the cans either. Any ideas?

Title: Re: Noises that change when table is tapped and some other things.
Post by: fullheadofnothing on August 27, 2014, 06:52:24 AM

You have at least one solder joint that is not solid. As the unit heats up, the joint expands and makes inconsistent contact. Tapping on it simply provides force to move the loose wire back into contact. Reheat all your solder joints.