Tubes Asylum Questions about tubes and gear that glows. FAQ

---

[ Follow Ups ] [ Post Followup ] Thread: [ Display  All  Email ] [ Tubes Asylum ] [ Return to Search Results ]

---

[ Alert Moderator ]

---

RE: My B&K 707 sensitivity seems wonky

Posted by Jonesy (A) on August 22, 2010 at 16:43:47

In Reply to: My B&K 707 sensitivity seems wonky posted by tonyptony on August 20, 2010 at 19:13:53:

When my B&K 700 needle was wonky during the sensitivity calibration, it turned out to be capacitors. I just replaced them all as there aren't that many.

As yours has recently been rebuilt, you might first try cleaning all the control and switch contacts. It might be as simple as that.(Make sure unit turned off and capacitors have had time to discharge!)

I used a zero residue contact cleaner on mine. (Of course debates run wild on which cleaners best.)

Also clean your tube pins, sockets.

Don't forget to check for any loose wires and cold solder joints.

I am not a technician, but forum folks helped me with mine. You may want to search threads of mine. Also "Big Harry" threads. Either with B & K tube testers. He was a great help.

Also, I eventually bought spare tubes for the tester. Good to get them when it is working well and you can actually test them! Sometimes it is a tube that needs replacing in the tester. (Otherwise, my goodness, we may have to buy another tester to check our tubes in our tube tester!)

Sorry couldn't be more specific. Maybe someone else can chime in?

Cheers!

Jonesy,


"I know just enough to get into trouble. But not enough to get out of it."

This post is made possible by the generous support of people like you and our sponsors:

The Cable Cooker

---

[ Top of Page ] [ Contact Us ] [ Support/Wish List ] [ Copyright © 2024, Audio Asylum, all rights reserved ]

---

[ General ] [ Speakers ] [ Tubes ] [ Vinyl ] [ Digital ] [ Hi-Rez ] [ Video Asylum ] [ Cables ] [ Tweaks/DIY ] [ Music ] [ Films ]

---