Tube and Tube Socket Cleaning

The type of noise was static-like.

I'll try the Kontak and see how it goes.

Thanks, y'all!!!!

Brad

I also use Kontak on a regular basis to clean all connections. Kontak can be ordered from http://www.gcaudio.com/ Perhaps the tubes need replaced? When you switched them, did the static change sides?

bday: DON'T use nail-files, Crocus or extremely light sandpaper will do. You can use thin pipe cleaner for the sockets! "Detergents"-wise Kontak or Cramolin have worked for me...

Lak wrote: Perhaps the tubes need replaced? When you switched them, did the static change sides?

Yes, it did change sides. However, I thought that maybe this one tube was exposing a problem my pre-amp was experiencing on both sides. The pre-amp (CJ PV10A)is about 10 years old so it (really, really) needs to be cleaned up anyway. The tubes I installed are new.

Thanks, all!!!!

Brad

most-likely caps become to be statically noisy and need to be replaced especially ones in ground isolation circuitry.
measuring capacitors for the face value +-tolerance isn't an easy task and require havin an osciloscope to measure the discharge time so without any checking and suffering setting up an oscilloscope for the right scale just change them all by face value and with better quality.
checking low-wattage bias resistors is much easier task for the rated value.
fuses within such period of time even if functional can create an extra noise.
whenever you change the caps you should run your preamp(approx 1 hr) on no-signal operation meaning that you will have an input connected with muted or unpowered source.