Static from tubes


After watching and listening to some reviews I decided to purchase a Schiit Audio Freya plus preamp. I replaced the Tung-Sol tubes with General Electric GTBs and at least in my system, the separation of instruments was better. This was in March, 2019. I was quite happy at first. Twice, here was some static right after the tubes were changed, then it disappeared. At this point I am again getting static when I use the tubes. I looked inside and the inserts look pretty cheap (plastic).  Is static common with tubes, or is this unit just have this one part of it that is cheap? I am trying to decide if there is a tweak or repair for this, or if I should just sell it cheap and move on. Any ideas? 
rickytickytwo
@rickytickytwo
Have you tried pulling the tubes and re-seating them?

Depending on how comfortable you are handling tubes, when they are out, give the top of the glass envelope a firm tap with the eraser end of a pencil.  Use the same sort of force you might apply to a light bulb without breaking it. 

Could be a bit of stray (flashing?) has gotten caught on some of the inner structure and dislodging it will eliminate associated static.  Check Brent Jessee's website FAQ for some related guidance.  Sometimes the act of pulling them and reseating them will dislodge the debris and solve the problem. 

If you do pull the tubes consider swapping L & R channel tubes.  Ensure the static noise follows that move.  I'm assuming not all your tubes are causing the noise.  

I own a first gen Freya and have had various pieces of tube gear over the years.  Intermittent static noise from tubes - esp. NOS, is not unusual. 


Clean the bases of the tubes and the surface of the tube sockets with isopropyl alcohol. Problem solved! 🤗
@ Newbee both tubes had static that I noticed only after changing the tubes for the third time. I tried a combination, and I used both sets. 

@Ghosthous. changing the tubes is what seemed to cause the static. It started, then stopped after a bit. Then again after another change, and finally the third time the static has lasted longer. I think I will take your and goeffkait's advice and do some cleaning. Then I'll take it from there.  

Ricky -
Are you hearing static in both channels or only one? If you move the tubes to opposite channels, does the static move to the other channel? In the first gen Freya, the rear tubes are right channel and front tubes are left channel . If the static persists in one channel after moving tubes and after cleaning, check interconnect connections. Anything loose?

If none of that helps - especially if the static is fixed in one channel - consider filing a claim with Schiit. The Freya has a 5 year warranty.

Good luck.