MARK III PREAMP TUBE TESTING

Mark I's, II's, III's and the almight IV

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charleonthronez
Mark I
Posts: 23
Joined: Mon Dec 08, 2014 2:00 am

MARK III PREAMP TUBE TESTING

Post by charleonthronez » Tue May 07, 2019 1:32 am

Guys Need help checking preamp tubes on Mark III , Should I try this test on V1 using a pencil hitting the tube gently, and should V1 be dead silent when tapping the tube being tested using clean Channel on max volume? Or I ll hear the tapping in the speaker?

Any other suggestions to perform this test?

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