Comments on: My Knight 600 Tube Tester

By: Jimmy Auw

Jimmy Auw — Tue, 23 Jun 2009 16:47:31 +0000

Coba swap kanan-kiri lampunya bro, masih sember gak?

Tube Tester saya model lama, kurang akurat, dan belum sempet dikalibrasi. Kalo buat iseng2 aja sih ga masalah, tapi kalo buat liat “kesehatan” seperti kasus bro, tester ini boleh dikatakan tidak mampu. Mesti pake yang kelasnya “mutual conductance” instead of “emission tester” seperti punya saya ini.

Thanks.

By: Erwin H

Erwin H — Tue, 23 Jun 2009 15:30:51 +0000

Bos Jimmy, kira2 menerima jasa test tube gak?
pengen check tube GEC TT22. Kira2 ada problem / gak di tubenya….

By: Jimmy Auw

Jimmy Auw — Wed, 04 Mar 2009 14:05:11 +0000

Hi,
Yes I have visited that page before.

Thank you.

By: Greg Vitercikq

Greg Vitercikq — Wed, 04 Mar 2009 03:53:44 +0000

I think the black / red “resistor” is a 1N4007 diode that has replaced the original rectifier at some point. (The rectifier would normally be a little to the left of where the new diode is, and it isn’t there.)

Apparently the rectifier could go bad, making it impossible to calibrate the tester. Have you seen the article at http://tubesound.com/2008/05/31/knight-600-tube-tester/ ?

I think I may have fried my rectifier, so it’s very helpful to see your photos.