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Old 6th March 2004, 11:56 PM   #1
Jeffy74 is offline Jeffy74  Canada
diyAudio Member
Join Date: Jan 2004
Location: Near Montreal, Quebec
Exclamation Tube tester and noise test


I have a "basic" tube tester, a Superior TV-11. I can test for quality, short, open, noise... I made some noise tests with a earphone without any result. I only ear hum. Even with a microphonic tube (remove from an audio amp)! I tap on the tube and I can't ear any microphony! A noisy tube is not detectable in this test too.

Questions are:

Can I test tube for microphony with my tester?
Can I ear a noisy tube with the noise test (tube that make hiss in my amp)?
My tester is too cheap? Maybe!!

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Old 7th March 2004, 06:49 PM   #2
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djmiddelkoop's Avatar
Join Date: Feb 2003
Location: Noord-Holland
I'm not familiar with this tester, but when it has a noise test mode and a headphone output, you should at least hear tapping on a (microphonic) tube.

Maybe this test mode is unservicable ?

Check at least the manual for what it is capabel of.

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