Re: [neonixie-l] Re: Nixie - Shorted segment - How to blast it apart?
Electrically zapping internal shorts is risky, and my experience shows it's only a temporary fix. I've only had one Burroughs tube (6091) fail on me, and after I zapped the first short, a different one appeared. As far as I can tell, the original failure (two cathodes shorted together after 1+ years of usage) may have been a latent manufacturing defect because after I zapped the tube, there was a strange piece of metal that got bonded to another cathode, and it would ionize the neon. Too bad I didn't photograph it. After more zapping, at least 1 digit no longer illuminates fully. The inside surface of the tube is severely darkened, perhaps it's sputtered cathode material. Now the tube just sits on my desk as a trophy. See my other postings (rants ?) about zapping IN-1's. I've given up on using those tubes in projects. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/60e267bd-bb9f-4047-8b8a-441fe4e57221%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [neonixie-l] Re: Nixie - Shorted segment - How to blast it apart?
I have some chinese tubes and a few of them had little gunk pieces loose inside the glass which shorted a few digits. Shaking and bumping them just right fixed all that. Those tubes look to be very cheaply made, but they look great and work great when they are working right. Chuck > > > Original Message >From: neonixie-l@googlegroups.com >To: neonixie-l@googlegroups.com >Subject: Re: [neonixie-l] Re: Nixie - Shorted segment - How to blast >it apart? >Date: Wed, 9 Dec 2015 23:32:28 -0500 > >>This picture is of tubes I purchased on ebay (2 of 8) >>https://www.dropbox.com/s/lcuilr9axdssz1y/7971-Tube-Short.jpg >> >>One can't be fixed (obviously), and the one had shorted.Thumped >it hard >>enough to release. >> >>This POST is about 3 of the 13 tubes (only 12 shipped - waiting on >seller >>response (even though I completely opened the box under video >camera)). >>http://www.ebay.com/itm/121817475654 >> >>Actually, one tube has a pin completely bent inward 90deg. I took >the >>risk and was able to bend it completely normal. tube works. >> >>3 have crossed over segments. Will post a pic if the above links >work. >> >>Michail Wilson >> >> >> >>In a message dated 12/9/2015 5:50:27 P.M. Pacific Standard Time, >>michaelxsea...@gmail.com writes: >> >>I'd inspect the shorts. If it's a solid mechanical connection >between >>segments, the tapping method may be your best option, but be >careful! >> >> >>Blasting works OK for fine whiskers, but not strong mechanical >>connections, of course. >> >> >>Good luck! >> >> >> >> >>On Sunday, December 6, 2015 at 11:26:54 AM UTC-6, Michail wrote: >>In the past, I have received a couple of B-7971 tubes where two >segments >>are shorted in that the wire was bent enough to touch another >segment. >> >> >>This causes, not only both segments to light, but will short down >the full >>line of tubes (obviously depending on the build design). >> >> >>Once, I was able to 'thump' the tube hard enough with a knuckle to >>dislodge it (risky, but I was surprised it worked). >> >> >>I just purchased 13 tubes on ebay (actually, the seller shorted me >by one >>and I fortunately compeletely opened and counted tubes from the >package >>while recording video - little hard to argue that). In any case, 3 >of the >>remaining tubes have the same issue. I really would hate to risk >thumping the >>tubes in fear of breaking them. >> >> >>I thought I saw at one time that someone applied power to heat it >and >>shake the tube or simply apply a lot of power in order to completely >blast the >>short. I don't recall. >> >> >>Any suggestions? >> >> >> >> >>-- >>You received this message because you are subscribed to the Google >Groups >>"neonixie-l" group. >>To unsubscribe from this group and stop receiving emails from it, >send an >>email to _neonixie-l+unsubscribe@googlegroups.com_ >>(mailto:neonixie-l+unsubscr...@googlegroups.com) . >>To post to this group, send email to _neonixie-l@googlegroups.com_ >>(mailto:neonixie-l@googlegroups.com) . >>To view this discussion on the web, visit >>_https://groups.google.com/d/msgid/neonixie-l/d90e1fc1-2886-4e1a-a10 >1-aa5348eea759%40googlegroups.com_ >>(https://groups.google.com/d/msgid/neonixie-l/d90e1fc1-2886-4e1a-a10 >1-aa5348eea759 >>@googlegroups.com?utm_medium=email_source=footer) . >>For more options, visit https://groups.google.com/d/optout. >> >> >>-- >>You received this message because you are subscribed to the Google >Groups "neonixie-l" group. >>To unsubscribe from this group and stop receiving emails from it, >send an email to neonixie-l+unsubscr...@googlegroups.com. >>To post to this group, send an email to neonixie-l@googlegroups.com. >>To view this discussion on the web, visit >https://groups.google.com/d/msgid/neonixie-l/a6c26.5ae2b105.439a5a5c% >40aol.com. >>For more options, visit https://groups.google.com/d/optout. >> $4.95/mo. National Dialup, Anti-Spam, Anti-Virus, 5mb personal web space. 5x faster dialup for only $9.95/mo. No contracts, No fees, No Kidding! See http://www.All2Easy.net for more details! -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/380-220151241014935614%40all2easy.net. For more options, visit https://groups.google.com/d/optout.
[neonixie-l] Re: Nixie - Shorted segment - How to blast it apart?
I'd inspect the shorts. If it's a solid mechanical connection between segments, the tapping method may be your best option, but be careful! Blasting works OK for fine whiskers, but not strong mechanical connections, of course. Good luck! On Sunday, December 6, 2015 at 11:26:54 AM UTC-6, Michail wrote: > > In the past, I have received a couple of B-7971 tubes where two segments > are shorted in that the wire was bent enough to touch another segment. > > This causes, not only both segments to light, but will short down the full > line of tubes (obviously depending on the build design). > > Once, I was able to 'thump' the tube hard enough with a knuckle to > dislodge it (risky, but I was surprised it worked). > > I just purchased 13 tubes on ebay (actually, the seller shorted me by one > and I fortunately compeletely opened and counted tubes from the package > while recording video - little hard to argue that). In any case, 3 of the > remaining tubes have the same issue. I really would hate to risk thumping > the tubes in fear of breaking them. > > I thought I saw at one time that someone applied power to heat it and > shake the tube or simply apply a lot of power in order to completely blast > the short. I don't recall. > > Any suggestions? > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/d90e1fc1-2886-4e1a-a101-aa5348eea759%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [neonixie-l] Re: Nixie - Shorted segment - How to blast it apart?
This picture is of tubes I purchased on ebay (2 of 8) https://www.dropbox.com/s/lcuilr9axdssz1y/7971-Tube-Short.jpg One can't be fixed (obviously), and the one had shorted.Thumped it hard enough to release. This POST is about 3 of the 13 tubes (only 12 shipped - waiting on seller response (even though I completely opened the box under video camera)). http://www.ebay.com/itm/121817475654 Actually, one tube has a pin completely bent inward 90deg. I took the risk and was able to bend it completely normal. tube works. 3 have crossed over segments. Will post a pic if the above links work. Michail Wilson In a message dated 12/9/2015 5:50:27 P.M. Pacific Standard Time, michaelxsea...@gmail.com writes: I'd inspect the shorts. If it's a solid mechanical connection between segments, the tapping method may be your best option, but be careful! Blasting works OK for fine whiskers, but not strong mechanical connections, of course. Good luck! On Sunday, December 6, 2015 at 11:26:54 AM UTC-6, Michail wrote: In the past, I have received a couple of B-7971 tubes where two segments are shorted in that the wire was bent enough to touch another segment. This causes, not only both segments to light, but will short down the full line of tubes (obviously depending on the build design). Once, I was able to 'thump' the tube hard enough with a knuckle to dislodge it (risky, but I was surprised it worked). I just purchased 13 tubes on ebay (actually, the seller shorted me by one and I fortunately compeletely opened and counted tubes from the package while recording video - little hard to argue that). In any case, 3 of the remaining tubes have the same issue. I really would hate to risk thumping the tubes in fear of breaking them. I thought I saw at one time that someone applied power to heat it and shake the tube or simply apply a lot of power in order to completely blast the short. I don't recall. Any suggestions? -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to _neonixie-l+unsubscribe@googlegroups.com_ (mailto:neonixie-l+unsubscr...@googlegroups.com) . To post to this group, send email to _neonixie-l@googlegroups.com_ (mailto:neonixie-l@googlegroups.com) . To view this discussion on the web, visit _https://groups.google.com/d/msgid/neonixie-l/d90e1fc1-2886-4e1a-a101-aa5348eea759%40googlegroups.com_ (https://groups.google.com/d/msgid/neonixie-l/d90e1fc1-2886-4e1a-a101-aa5348eea759 @googlegroups.com?utm_medium=email_source=footer) . For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/a6c26.5ae2b105.439a5a5c%40aol.com. For more options, visit https://groups.google.com/d/optout.
