Bottlehead Forum

Bottlehead Kits => Crack => Topic started by: arugula on September 26, 2021, 12:44:55 PM

Title: static in one channel
Post by: arugula on September 26, 2021, 12:44:55 PM

Hi and thanks for any help. I built my Crack and am truly loving it. I have not yet added the upgrade because of a problem: there is static in the right channel only. It does not change when I turn up the volume and is there with no input into the amplifier. When I turn up the volume at highest levels (roughly 3 o'clock) I hear pretty bad hum, but the volumes I use are down around 7-9 O'clock. All the tests in the instructions were fine. Not sure where to troubleshoot first. Thanks much for help.

Title: Re: static in one channel
Post by: Paul Birkeland on September 26, 2021, 04:48:19 PM

I would start by reflowing every solder joint in the amp other than the power switch and the pins where the LEDs connect.

Title: Re: static in one channel
Post by: arugula on September 26, 2021, 04:54:23 PM

OK. Thanks.  I way to narrow it down because in one channel? Will give it a shot.

Title: Re: static in one channel
Post by: 2wo on September 27, 2021, 06:38:38 AM

Also, clean the tube pins...John

Title: Re: static in one channel
Post by: arugula on September 28, 2021, 10:12:02 AM

Is it weird to have him when the volume is cranked to very high?

Title: Re: static in one channel
Post by: Paul Birkeland on September 28, 2021, 10:15:44 AM

That's pretty normal, especially if nothing is plugged into the amp.  If you listened at that level, you'd go deaf in a hurry.