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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: Let MY costly mistake be a lesson to YOU... posted by adhoc on December 4, 2006 at 20:22:04:
Well....I can tell you that tapping on tubes was a common practice in TV stations back when there were plenty of tubes in the transmitting and video gear.If you remember back then, there were plenty of times when the on-air transmissions were interrupted with some sort of a message saying, "please stand by" or maybe a test pattern. Behind the scenes, there were frantic engineers diagnosing the video chain. To do this, a common technique was to take the back of a screwdriver and run it down a line of tubes in a rack. The offending tube would be quickly found if that was the culprit. Sure, there may have been a occasional breakage but good engineers knew how to apply the pressure.
As for your tragedy, I'm very sorry to hear that some more well-thought-of tubes no longer grace this earth. I still use the tapping technique when I'm looking for a noisy tube and have had one that had sufficient shedding of some sort inside that it arced in a spectacular blaze of light. Perhaps I did myself a favor....
Cheers,
David
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Follow Ups
- A story from long ago..... - doodlebug 21:08:12 12/04/06 (8)
- Those transmitter tubes - Frihed89 00:26:41 12/05/06 (7)
- Well, some of use weren't that crazy...... - doodlebug 08:27:07 12/05/06 (2)
- Are you talking but EMF hazzards? - Frihed89 11:07:54 12/05/06 (1)
- Re: Are you talking but EMF hazzards? - DaveInVA 14:47:59 12/05/06 (0)
- And many were water cooled! My preference is the air-cooled Madza - Bambi B 07:49:10 12/05/06 (2)
- Along those lines... - lipmanl 08:19:40 12/05/06 (1)
- I like your idea very much - Bambi B 08:32:28 12/05/06 (0)
- Re: Those transmitter tubes - McCormack 06:58:24 12/05/06 (0)
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