Bottlehead Forum

Bottlehead Kits => Kaiju Stereo 300B amp => Topic started by: hpleung on September 10, 2022, 12:00:46 PM

Title: Random Static Noise in one channel [resolved]
Post by: hpleung on September 10, 2022, 12:00:46 PM

Hi,

I completed the Kaiju months ago and it worked fine. It is also regularly used - like daily. Recently, I detected a static noise coming from the right channel. I narrowed it down to the amp; that is it is not the speaker or speaker connection.

I am planning to go and retouch / re-solder every connection in the right channel. Are there any better suggestion?

Thanks.

Title: Re: Random Static Noise in one channel
Post by: Paul Birkeland on September 10, 2022, 03:25:45 PM

I would suggest plugging in a cheap disposable speaker with the amp running on your workbench and poke around with a wooden chopstick.  You should be able to activate the noise by poking the part of the circuit that's problematic. 

As always it's also a good idea to swap tubes between channels just to be sure that's not a contributing factor, and sometimes unplugging and plugging back in tubes will scrape oxidation off the pins (especially on 9 pin tubes).

Title: Re: Random Static Noise in one channel
Post by: hpleung on September 19, 2022, 12:42:05 PM

Thanks. This has been fixed.

Title: Re: Random Static Noise in one channel
Post by: Paul Birkeland on September 19, 2022, 04:29:09 PM

What did you end up finding?

Title: Re: Random Static Noise in one channel [resolved]
Post by: hpleung on October 07, 2022, 09:14:10 AM

I simply redid the solders and it seems to have fixed it.