Tube Testers Currently for Sale
These testers have NOT been serviced, but they work very well. They have been checked against several of my calibrated tube standards and the testers appear to be right on as far as calibration is concerned.
B&K 650 Dyna-Quik Tube Tester - $275 plus Shipping
This unit is from the 1960's and will test octal, loctal, 7 pin, 9 pin, compactron and many other tubes. This is a great, easy to use tester for testing tubes for your vintage and new audio equipment. It will test 5AR4, 5U4, 5Z3, 6L6, 6V6, 6SN7, 6SL7, 6CA4, 6CA7/EL34, 6DJ8, 6922, 5751, 5881, 12AT7, 12AU7 and 12AX7 along with many other audio and radio tubes.
This tube tester features a clever voltage control circuit that eliminates the need to constantly set the AC line level to insure accurate tests, regardless of line voltage variations. Has sockets for most late model hifi tubes, including compactrons, novar, duodecal, and Nuvistors. Dyna Jet System, where many popular tubes can be tested by just setting two dials. Dual section tubes can be checked with just two pushbuttons. Sensitive grid leakage and shorts read on the meter and on a neon lamp, indicating grid emissions, internal shorts, or gas. Life-test pushbutton, which will indicate on the meter, gives indication of relative good use left in a tube.
The tester works great. I checked it out with the following tubes: 6V6, 12AU7, 6DJ8 and 5U4GB which had all been tested on my Hickok 539C and TV-7/B. The readings were all satisfactory. Includes the instructions and the tube tester settings.
The meter does have a crack and some scuffs but they are strictly cosmetic. The case has some wear. The tube socket pins are tight and the 12AU7 dual triode socket which would probably have seen the most use is tight as far as the pins. With many older testers, the pins may loose from lot's of use and this may cause contact problems.
With the exception of a few scratches, this tube tester is in very good condition.