Tube Testers

I am still planning to give a Dynaco Clinic - but between incipient hip-replacement surgery and starting a new job, the opportunities for same have been mortgaged into the late spring.

I am noticing an increasing number of posts that seem to involve symptoms that could be tube-related, could be something else, or both. And the diagnosis and treatment of such symptoms become problematic as treating one symptom without addressing an underlying 'different' cause may mask a problem that will only come back in short order.

So, on a Reasonable Notice Basis, I am willing to offer the use of my Hickok 539B Tube Tester, located in Melrose Park, PA (just outside the Philadelphia City Limits) for use to any and all comers. It has the capacity to match (with the use of outboard VOMs) and within the universe of general-purpose tube testers is one of the better ones. No cost, of course, nor do I have tubes to sell nor am I soliciting in any way.

I would like to see other participants of this forum offer the same option if possible so that such capacities may be extended beyond my immediate area. Just determining whether the tubes are a factor can add a great deal of clarity in diagnosing issues with any amp.

So far it seems like I need to try the tube in the actual circuit it will be used in, my basic tester always shows good, probably was a waste of money, not going to tell me if it will make the entire rack sensitive to touch. Not sure I believe in close matching either, heard they can get out of match in a few weeks or so anyway.