Re: [time-nuts] HP quality
In message 20110911230455.257daa0...@locke.alientech.net, Mike S writes: [...] along with ISO 900*, which amounts to you can make crap, as long as you document it and try to do better. ISO9000 has no requirement that you try to do better. ISO9000's only requires that you can document how crap your wares are, and that you can document how you determined that. You can be ISO9000 certified with this QA process: Kick a tire, listen for rattling sound, if not too bad sounding, check 'Inspection OK' box on price-sign. The only thing you have to document subsequently, is that all cars had at least one tire kicked. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 p...@freebsd.org | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] HP quality
I prefer the precis. (which apparently he never said). BTW, I thought the bucket of marbles test was pretty cute. -John == On 9/11/11 7:00 PM, Jim Lux wrote: On 9/11/11 3:14 PM, gary wrote: Since Demming is also the father of SPC, I'd like to know the context of that statement. I'll find it.. but I think it's in the context of the process has to be good Found it (thank you wikipedia, saving me hiking upstairs to rummage through the books) Deming, 1986, Out of the Crisis Cease dependence on inspection to achieve quality. Eliminate the need for massive inspection by building quality into the product in the first place. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] HP quality
Hi: When I was working there was an on site class that lasted many weeks on Statistical Process Control. The initial part had to do with the various ways of measuring groups of products and the charts to display the data. The idea was to get the average and standard deviation for each group and plot those two values. The people doing the work could then tell when the product was out of tolerance or about to go out of tolerance and they knew how to fix that. It was management's job to change the process in such a way to improve yield. The much more interesting part of the class involved the management implications of SPC. It turns out that throughout my working career the people managing the meetings never did ask the important questions. For more see: http://www.prc68.com/I/Learning.shtml#Important Have Fun, Brooke Clarke http://www.PRC68.com http://www.End2PartyGovernment.com/ ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] HP quality
That is not a unique incident. I'm interested in LASER Interferometry. Attached is a pic I took of an HP 5529A LASER head. (Aside: If anybody is interested, there is a Yahoo Group for LASER Interferometer fans) Note the two leads to CR5 near the top, center of the pic. They go to a feedback photocell and obviously have never been trimmed or soldered. The unit ran fine that for several months before suddenly failing. Soldering the leads fixed the LASER head. It was not always this way. Today I stumbled on a 1965 HP 738BR Voltmeter Calibrator at my favorite surplus electronics store. I offered $20.00 and it was accepted. This unit is based on vacuum tubes! I got it home, plugged it in, and it is still in spec on the DC range. The AC part is not working - I suspect the small incandescent lamp that stabilizes the oscillator. I may end up junking the vacuum tube half. The other part of the instrument, in a separate compartment, has a precision 40 step attenuator with a 10^6 / 1 range (300 Volts to 300 uVolts) which I will certainly keep. Best regards, No please don't junk the valve part, it would be be waste of a lovely instrument. However that's not the topic. I first met a HP 3582 LF SA when it came into the cal lab from a remote site, just out of warranty. Apart from being out of cal, the was a brief comment, intermittent channel 1. We had not seen one before and being the guv I got to play first. Yes there was an intermittent fault and it seemed vibration sensitive. After I had figured how to drive it (what's a FFT analyser - what's a FFT? but I was young then.) I could confirm the fault and I had even found the diagnostics in the manual. Running diagnostic 1 I determined that the fault was in IC1 or IC3 and using diagnostic 2 I narrowed it down to IC1 or IC2, so suspecting a loose IC1 I put a rather large thumb and pressed - the fault disappeared Remove thumb and it was back! In for a penny, in for a pound, I pulled the chip and yes, even I could spot the doubled up pin, so I gently straightened it and that was the cure. Later I was told that the fault was there since delivery, but they could not afford to spare it at the the time. (Please note the (IC) names have have been changed to protect my memory.) Geoff G8GNZ -- ### Geoff Blake, G8GNZ JO01fq: Chelmsford, Essex, UK ge...@palaemon.co.uk or melecert...@gmail.com Using Linux: Ubuntu 11.04 on Intel or Debian on UltraSparc and even on the NAS. Avoiding Micro$oft like the plague. ### ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] HP quality
I've had better luck with all the 'broken', 'for parts', 'repair' HP equipment I scored cheap on eBay. It is a cash-positive hobby, buy broken for $200, sell working to highest bidder (sometimes 10x). Feels as good as getting a pound puppy in a good home, you learn a thing or two (often more) about rf, stable circuits, good design and the easy money to be made on leaky or dried electrolytic caps. One repair a week keeps the shrink away. I have the utmost respect for their RF line, spectrum analyzers, generators. I once had a 22yr old generator that hasn't been used in years but I couldn't turn a single pot or trimmer, every voltage, frequency was within spec. In fact, there are some newer equipment that seemed to show up faulty more often, like 34970 acquisition boxes - I never found out if it was due to the much higher volume of those boxes made (same failure rate times 20x the number of units made), new assembly plant in a new country with not fully trained workers, or just poorer design. A couple of years ago there was an avalanche of cheap equipment on eBay, lots of company must have closed after the .com bubble, now there are less bargains, and plenty of professional resellers trying to get 90% of retail on 15yr old boxes. One equipment that doesn't seem to get to the 'fixed' bin is the 6812B. Nice AC power generator - variable amplitude, frequency (aviation 400Hz), glitches, brown outs, etc. Think of almost an arb with 750VA output. I've done the 'close your eyes and replace all MOSFETs' just to get a new set of blown parts, and then stopped at bringing up the FET board from a lower DC voltage (60V not 500V). If anyone has worked in one of these, any hints are welcome. On the 'bad out of factory' issue, I never saw in HP or Agilent equipment, but one Sony TV once had 5 pins on the tuner never soldered - the factory whistle must have sounded after pin 5 and the thing was tested and shipped the next day. This was a lesser line out of Mexico - two XBRs have been running for 10+ yrs without a glitch. Jose -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Geoff Blake Sent: Sunday, September 11, 2011 1:33 AM To: time-nuts@febo.com Subject: Re: [time-nuts] HP quality That is not a unique incident. I'm interested in LASER Interferometry. Attached is a pic I took of an HP 5529A LASER head. (Aside: If anybody is interested, there is a Yahoo Group for LASER Interferometer fans) Note the two leads to CR5 near the top, center of the pic. They go to a feedback photocell and obviously have never been trimmed or soldered. The unit ran fine that for several months before suddenly failing. Soldering the leads fixed the LASER head. It was not always this way. Today I stumbled on a 1965 HP 738BR Voltmeter Calibrator at my favorite surplus electronics store. I offered $20.00 and it was accepted. This unit is based on vacuum tubes! I got it home, plugged it in, and it is still in spec on the DC range. The AC part is not working - I suspect the small incandescent lamp that stabilizes the oscillator. I may end up junking the vacuum tube half. The other part of the instrument, in a separate compartment, has a precision 40 step attenuator with a 10^6 / 1 range (300 Volts to 300 uVolts) which I will certainly keep. Best regards, No please don't junk the valve part, it would be be waste of a lovely instrument. However that's not the topic. I first met a HP 3582 LF SA when it came into the cal lab from a remote site, just out of warranty. Apart from being out of cal, the was a brief comment, intermittent channel 1. We had not seen one before and being the guv I got to play first. Yes there was an intermittent fault and it seemed vibration sensitive. After I had figured how to drive it (what's a FFT analyser - what's a FFT? but I was young then.) I could confirm the fault and I had even found the diagnostics in the manual. Running diagnostic 1 I determined that the fault was in IC1 or IC3 and using diagnostic 2 I narrowed it down to IC1 or IC2, so suspecting a loose IC1 I put a rather large thumb and pressed - the fault disappeared Remove thumb and it was back! In for a penny, in for a pound, I pulled the chip and yes, even I could spot the doubled up pin, so I gently straightened it and that was the cure. Later I was told that the fault was there since delivery, but they could not afford to spare it at the the time. (Please note the (IC) names have have been changed to protect my memory.) Geoff G8GNZ -- ### Geoff Blake, G8GNZ JO01fq: Chelmsford, Essex, UK ge...@palaemon.co.uk or melecert...@gmail.com Using Linux: Ubuntu 11.04 on Intel or Debian on UltraSparc and even on the NAS. Avoiding Micro$oft like the plague. ### ___ time-nuts mailing list -- time-nuts@febo.com
Re: [time-nuts] HP quality
Over the years, I've seen perhaps 10,000 pieces of electronic gear. In that time I can remember 4 out of factory failures: In no particular order: The unsoldered part in an HP LASER Interferometer I posted previously. In an HP Communications Sweep Oscillator covering 3.7 - 4.2 and 5.9-6.5 GHz, there was a screw loose (really!) in the output amp MMIC. A microscopic inspection showed it had never been tightened at the factory. The MMIC was trashed. In a Data General semiconductor memory board for a Nova 3, 30-50 IC leads were never wave soldered. In a Test Station for a Raytheon AMRAAM missile, there were unsoldered joints on a switch. In all cases, I think the units passed inspection and were delivered to customers. ears ago, when I was building space payloads, I was told by a guy at MIT's Lincoln Labs: You cannot inspect in quality. He was right, IMO. Best, -John [snip] On the 'bad out of factory' issue, I never saw in HP or Agilent equipment, but one Sony TV once had 5 pins on the tuner never soldered - the factory whistle must have sounded after pin 5 and the thing was tested and shipped the next day. This was a lesser line out of Mexico - two XBRs have been running for 10+ yrs without a glitch. Jose -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Geoff Blake Sent: Sunday, September 11, 2011 1:33 AM To: time-nuts@febo.com Subject: Re: [time-nuts] HP quality That is not a unique incident. I'm interested in LASER Interferometry. Attached is a pic I took of an HP 5529A LASER head. (Aside: If anybody is interested, there is a Yahoo Group for LASER Interferometer fans) Note the two leads to CR5 near the top, center of the pic. They go to a feedback photocell and obviously have never been trimmed or soldered. The unit ran fine that for several months before suddenly failing. Soldering the leads fixed the LASER head. It was not always this way. Today I stumbled on a 1965 HP 738BR Voltmeter Calibrator at my favorite surplus electronics store. I offered $20.00 and it was accepted. This unit is based on vacuum tubes! I got it home, plugged it in, and it is still in spec on the DC range. The AC part is not working - I suspect the small incandescent lamp that stabilizes the oscillator. I may end up junking the vacuum tube half. The other part of the instrument, in a separate compartment, has a precision 40 step attenuator with a 10^6 / 1 range (300 Volts to 300 uVolts) which I will certainly keep. Best regards, No please don't junk the valve part, it would be be waste of a lovely instrument. However that's not the topic. I first met a HP 3582 LF SA when it came into the cal lab from a remote site, just out of warranty. Apart from being out of cal, the was a brief comment, intermittent channel 1. We had not seen one before and being the guv I got to play first. Yes there was an intermittent fault and it seemed vibration sensitive. After I had figured how to drive it (what's a FFT analyser - what's a FFT? but I was young then.) I could confirm the fault and I had even found the diagnostics in the manual. Running diagnostic 1 I determined that the fault was in IC1 or IC3 and using diagnostic 2 I narrowed it down to IC1 or IC2, so suspecting a loose IC1 I put a rather large thumb and pressed - the fault disappeared Remove thumb and it was back! In for a penny, in for a pound, I pulled the chip and yes, even I could spot the doubled up pin, so I gently straightened it and that was the cure. Later I was told that the fault was there since delivery, but they could not afford to spare it at the the time. (Please note the (IC) names have have been changed to protect my memory.) Geoff G8GNZ -- ### Geoff Blake, G8GNZ JO01fq: Chelmsford, Essex, UK ge...@palaemon.co.uk or melecert...@gmail.com Using Linux: Ubuntu 11.04 on Intel or Debian on UltraSparc and even on the NAS. Avoiding Micro$oft like the plague. ### ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] HP quality
I got one more example of loose QA in an item fully on topic: I bought a Rb oscillator, a FRS-C and when I opened the case just for curiosity found one of the connector pins without any trace of solder on it, it was just making contact with the PCB hole. It carried the in-lock signal and I like to think that probably this unit showed intermittent fails and was replaced with low hours. Ignacio EB4APL On 11/09/2011 10:32, Geoff Blake wrote: That is not a unique incident. I'm interested in LASER Interferometry. Attached is a pic I took of an HP 5529A LASER head. (Aside: If anybody is interested, there is a Yahoo Group for LASER Interferometer fans) Note the two leads to CR5 near the top, center of the pic. They go to a feedback photocell and obviously have never been trimmed or soldered. The unit ran fine that for several months before suddenly failing. Soldering the leads fixed the LASER head. It was not always this way. Today I stumbled on a 1965 HP 738BR Voltmeter Calibrator at my favorite surplus electronics store. I offered $20.00 and it was accepted. This unit is based on vacuum tubes! I got it home, plugged it in, and it is still in spec on the DC range. The AC part is not working - I suspect the small incandescent lamp that stabilizes the oscillator. I may end up junking the vacuum tube half. The other part of the instrument, in a separate compartment, has a precision 40 step attenuator with a 10^6 / 1 range (300 Volts to 300 uVolts) which I will certainly keep. Best regards, No please don't junk the valve part, it would be be waste of a lovely instrument. However that's not the topic. I first met a HP 3582 LF SA when it came into the cal lab from a remote site, just out of warranty. Apart from being out of cal, the was a brief comment, intermittent channel 1. We had not seen one before and being the guv I got to play first. Yes there was an intermittent fault and it seemed vibration sensitive. After I had figured how to drive it (what's a FFT analyser - what's a FFT? but I was young then.) I could confirm the fault and I had even found the diagnostics in the manual. Running diagnostic 1 I determined that the fault was in IC1 or IC3 and using diagnostic 2 I narrowed it down to IC1 or IC2, so suspecting a loose IC1 I put a rather large thumb and pressed - the fault disappeared Remove thumb and it was back! In for a penny, in for a pound, I pulled the chip and yes, even I could spot the doubled up pin, so I gently straightened it and that was the cure. Later I was told that the fault was there since delivery, but they could not afford to spare it at the the time. (Please note the (IC) names have have been changed to protect my memory.) Geoff G8GNZ ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] HP quality
At 05:10 PM 9/11/2011, Jim Lux wrote... that's a classic quote from Deming Was it Deming, or the follow-lings who decided that six-sigma is really 4.5 sigma, because the former isn't realistic (or isn't alliterative)? A former employer put me through that BS, along with ISO 900*, which amounts to you can make crap, as long as you document it and try to do better. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] HP quality
Forgive me for spoiling the list with my tears. Day after day, I feel that everybody is pretending to be God: aiming to create again the world. Instead of endeavouring to improve what exists already. It is absolutely mandatory to tell I did it (even if it is worse than it was before...) Things are working very bad, or not working at all. My wife calls me a dozen times per day because the ADSL connection is not working. I can't maintain a sustained conversation with my cellular telephone. It do not send (or do not receive) international SMS, either. Computers crash without any presuntive reason. Satellite television is sometimes a Rio de Janeiro mosaic carnaval. etc. etc. Isn't it a shame for us engineers of today, after the novel heritage that we received from our parents? Best and very sad regards from Portugal, Antonio CT1TE Isn't it a shame Quoting Bruce Lane kyr...@bluefeathertech.com: Six-sigma disease was all over the place, unfortunately. I spent seven years with Motorola, in their former Communications Sector, and it always felt like we spent more time on politics and quality meetings than we did actually doing what we were, supposedly, hired to do (fix things!) Boeing was just as bad, if not worse. Spent six years there, mostly in computing support. Upper management got all excited about some bizarre book called Who Moved My Cheese? and something equally bizarre called Tiger Teams. I suppose it all meant something to the paper-pushers. To those of us on the tech/engineering side, it was worse than useless as it tended to distract from doing a good job. As for ISO 9001 or whatever -- Don't even get me started! Keep the peace(es). *** REPLY SEPARATOR *** On 11-Sep-11 at 19:03 mi...@flatsurface.com wrote: At 05:10 PM 9/11/2011, Jim Lux wrote... that's a classic quote from Deming Was it Deming, or the follow-lings who decided that six-sigma is really 4.5 sigma, because the former isn't realistic (or isn't alliterative)? A former employer put me through that BS, along with ISO 900*, which amounts to you can make crap, as long as you document it and try to do better. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. __ Information from ESET NOD32 Antivirus, version of virus signature database 6455 (20110911) __ The message was checked by ESET NOD32 Antivirus. http://www.eset.com -=-=-=-=-=-=-=-=-=-=-=- Bruce Lane, Owner Head Hardware Heavy, Blue Feather Technologies -- http://www.bluefeathertech.com kyrrin (at) bluefeathertech do/t c=o=m Quid Malmborg in Plano... ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] HP quality
On 9/11/11 3:14 PM, gary wrote: Since Demming is also the father of SPC, I'd like to know the context of that statement. I'll find it.. but I think it's in the context of the process has to be good On 9/11/2011 2:10 PM, Jim Lux wrote: On 9/11/11 12:20 PM, J. Forster wrote: ears ago, when I was building space payloads, I was told by a guy at MIT's Lincoln Labs: You cannot inspect in quality. He was right, IMO. that's a classic quote from Deming He had a demonstration for this where he had a bucket of white marbles with a few red ones mixed in.. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] HP quality
1986? -Original Message- From: Jim Lux jim...@earthlink.net Sender: time-nuts-boun...@febo.com Date: Sun, 11 Sep 2011 20:20:15 To: Discussion of precise time and frequency measurementtime-nuts@febo.com Reply-To: Discussion of precise time and frequency measurement time-nuts@febo.com Subject: Re: [time-nuts] HP quality On 9/11/11 7:00 PM, Jim Lux wrote: On 9/11/11 3:14 PM, gary wrote: Since Demming is also the father of SPC, I'd like to know the context of that statement. I'll find it.. but I think it's in the context of the process has to be good Found it (thank you wikipedia, saving me hiking upstairs to rummage through the books) Deming, 1986, Out of the Crisis Cease dependence on inspection to achieve quality. Eliminate the need for massive inspection by building quality into the product in the first place. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
[time-nuts] HP quality... a HP5065A experience
Dear time-nuts, As I am trying to bring a HP5065A back into operational mode, I have been looking at the Cell oven and Lamp oven readings, but it has been jump. While looking at it with a friend (a true soldering master) I popped the lower lid and he found that one of the wires was not soldered. Sure enough this was one of the taps from the A11 board for the front panel. It has been like this when it was assembled, so the HP quality checks didn't catch it. I do beleive that the other end have the same problem, the selector switch shows the same unstable behaviour, but is harder to check. I have not yeat figured out how I pop the front end off so I can access the rotary switch properly. So be aware of wires. A bad solder joint doesn't seem to be there, but lacking solder joints was a bit surprising. I have trouble with this old beast, it does not lock so caring about basics like ovens and oscillator tunings has been my starter approach. The rubidium Cell and Lamp ovens (pin 2 and 14) seems to stabilize at 15,75 V rather than the 18 V which the manual indicates should be the normal. I cannot honestly say I spent quality time on it yet. Hope to get up to speed on it. Cheers, Magnus ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] HP quality... a HP5065A experience
Other thing I have noticed is that some wires simply rot off. I think it may be the flux that eats the wires after 20 years or so. On Sat, Sep 10, 2011 at 1:26 PM, J. Forster j...@quikus.com wrote: That is not a unique incident. I'm interested in LASER Interferometry. Attached is a pic I took of an HP 5529A LASER head. (Aside: If anybody is interested, there is a Yahoo Group for LASER Interferometer fans) Note the two leads to CR5 near the top, center of the pic. They go to a feedback photocell and obviously have never been trimmed or soldered. The unit ran fine that for several months before suddenly failing. Soldering the leads fixed the LASER head. Best, -John = Dear time-nuts, As I am trying to bring a HP5065A back into operational mode, I have been looking at the Cell oven and Lamp oven readings, but it has been jump. While looking at it with a friend (a true soldering master) I popped the lower lid and he found that one of the wires was not soldered. Sure enough this was one of the taps from the A11 board for the front panel. It has been like this when it was assembled, so the HP quality checks didn't catch it. I do beleive that the other end have the same problem, the selector switch shows the same unstable behaviour, but is harder to check. I have not yeat figured out how I pop the front end off so I can access the rotary switch properly. So be aware of wires. A bad solder joint doesn't seem to be there, but lacking solder joints was a bit surprising. I have trouble with this old beast, it does not lock so caring about basics like ovens and oscillator tunings has been my starter approach. The rubidium Cell and Lamp ovens (pin 2 and 14) seems to stabilize at 15,75 V rather than the 18 V which the manual indicates should be the normal. I cannot honestly say I spent quality time on it yet. Hope to get up to speed on it. Cheers, Magnus ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] HP quality... a HP5065A experience
I've only seen that on non-hermetic electrolytics and batteries. 109Ds are quite suseptible. -John Paul wrote: Other thing I have noticed is that some wires simply rot off. I think it may be the flux that eats the wires after 20 years or so. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
