Took no more than one hour to get things up again, but it woke people up properly and Words were had. Wonder if it helps.I fear that like most catastrophes which don't wipe out half the planet, the decision will be made to treat further such problems as a matter for politics to handle rather than having actual people do anything, because money. Certainly, much noise and lip service will be paid very publicly... but a few days into the next news cycle there will be something much more important to worry about.
It's the connected-age equivalent to swapping one battery between an assortment of SEP Field generators rather than actually stopping the blood loss.The point where we discovered that the problem was already apparent was when we started talking to the official Critical National Infrastructure people at the Cabinet Office in our preparation for Y2K (yes, that long ago). So in this particular case the people who could have 'had words', or even ultimately got new laws passed if necessary were already in the loop.
The UK, then and still, has rather a laissez-faire attitude to these things and, although there were civil servants who were concerned and active in trying to get fragilities weeded out of the system, there wasn't any apparent political will to press the point. The attitude seemed to be "Let's try and coordinate, foster cooperation, but basically leave these good 'dot com' people to carry on with the business of making money as fast as possible". Let me be clear, there was good stuff came out of our discussions - had some disaster befallen us in the future I could get engineering staff through police cordons, we had critical people's mobile numbers put on the list of magic numbers that still worked when the plebs got locked out and so on - but I never got the feeling that any progress was made towards the sort of coordination that was needed while the UK's communications infrastructure was being completely reshaped by a bunch of companies all essentially working independently and in competition with each other.
I hate seeing this sort of shityou can sold fixe that with special aluminium welding rods
Probably not. That's a die casting and the aluminium alloy used for die casting has a lot of silicon in it. It makes it expand ever so slightly as it freezes - which is great for die casting, but lousy for welding. When welding it as it all freezes the base casting metal expands, the filler metal shrinks and the whole thing either bends out of shape or in extreme cases just cracks again.
You can "stitch" cast ally back together using lead, but on something that small... idk.
Only seen it used on HGV engine blocks.
EDIT: This link might provide some useful clues/inspiration? https://www.metalockengineering.com/en/typical-repairs/metal-stitching/
I would check Vref pin to make sure it's not wrong (assume it's 2.5V). Then use a 3478A or something in 3V range very high impedance mode to measure differential voltage across the inputs of the MAX134 while the actual input terminals of the 4503 are shorted and make sure that is zero. That will isolate either the ADC support or the input circuitry. Then divide and conquer!
Agilent 54622D carbon pad restoration
As I said in a previous post, scrubbing / cleaning the carbon pads again with IPA did not help the conductivity, nor did it even remove much of anything. I say "again" because when I got it several years ago I did the same cleaning. That being said, I tested the keys again after cleaning this time and they did not function any better. They all worked but needed to be pressed "hard".
...
Okies... show of hands.
April 15, I ordered a 10-piece lot of my favorite D-Sun MP1584EN buck converter boards for... stuff. Vendor shows 2-5 week delivery time, but updates in a few days with a Tracking number. Well, FF to this morning, I notice the delivery is now a week past the latest delivery date in the listing, and the tracking still shows as "en route to carrier". So they created a shipment, but either never shipped or more likely are just using that number to satisfy eBay requirements to be able to mark as "SHIPPED" and actually sent it some manner that isn't tracked.
I start a resolution, asking for a refund as I figure after 6 weeks I've been reasonably patient already; the vendor replies crying COVID delays and asking that I wait another 2 weeks. Since I already have a resolution process open, do I give the guy a break, or is 3 weeks late just unreasonable, even with COVID delays...?
mnem
Agilent 54622D carbon pad restoration
As I said in a previous post, scrubbing / cleaning the carbon pads again with IPA did not help the conductivity, nor did it even remove much of anything. I say "again" because when I got it several years ago I did the same cleaning. That being said, I tested the keys again after cleaning this time and they did not function any better. They all worked but needed to be pressed "hard".
...
Thanks for the update. The suspense was killing me.
Added to POI.
...but I never got the feeling that any progress was made towards the sort of coordination that was needed while the UK's communications infrastructure was being completely reshaped by a bunch of companies all essentially working independently and in competition with each other.
Thanks for the update. The suspense was killing me.
Added to POI.
But given my workload, this is far away. Today I hate my fogging karma. It could have been almost as pristine on the inside as on the exterior, ONCE rewarding me for caring about my tools and gear.
ORCFUCKBLOODSHITMURDERFROG!
... just a question: Does you omnibus also contain vintage transistors (TO-18) ? I am working on some esoteric oscillator project where I need *old* parts that have not been made using modern production processes.
regards
Wolfgang
... just a question: Does you omnibus also contain vintage transistors (TO-18) ? I am working on some esoteric oscillator project where I need *old* parts that have not been made using modern production processes.
regards
Wolfgang
How old, and do they have to be TO-18 package? I have a few, and some TO-5, think I even have some TO-1 germaniums somewhere but I can't find them atm.
I also have a few TO-98 case Japanese 2SC380, 382, and a 2SA495, all 1970s vintage.
The most interesting TO-18 I have (maybe) is a BSX 20, looks to be late 1980s SGS Thompson, Towers guide says it's a 500MHz UHF low current switcher.
Also a few oddball X-09 case from the 1960s, and a lonely TO-66.
If you're interested in any of them, they're yours for the price of the postage.
You should definitely try and specially if you are not ONLY doing python
Mostly all my colleges have moved to VScode
Working on the Black Star 4503 and have just discovered that R39, the input resistor that should be 1K 1W and has always been read as 1K is now reading as 222.5 . I have pulled it from circuit and checked it and it still reads 222.5 so it has short in it somewhere. Lets see if I have one, I know I have .25W one.
Edit
FFS, I must be losing the plot, that resistor is an actual 222 in reality now that I've checked the colour coding, but the schematic and the BOM shows it as a 1K so I'm guessing is selected to keep the overall input resistance the same because of tolerances damm, thought I'd nailed it
Thanks a lot for the offer, but I need parts that appear on the NASA parts list. I am builing an USOs that is supposed to be space qualified, so a lot of parts are not even allowed. So for the types, that are 2N2222, 2N2857, 2N2848, 2N3866, ...
really retro, I know. Other parts may be even better, but you know the space buerocrats.
I propose soaking the PCB in "Essigessenz" and wait for the bubbling to subside. This neutralizes the KOH and basically stops the caustic from eating any further into your PCB.
Search for "JANTX" on ebay. Sorted. Also broke
Thanks a lot for the offer, but I need parts that appear on the NASA parts list. I am builing an USOs that is supposed to be space qualified, so a lot of parts are not even allowed. So for the types, that are 2N2222, 2N2857, 2N2848, 2N3866, ...
really retro, I know. Other parts may be even better, but you know the space buerocrats.
Is it possible, that you could post this parts list here? Just out of curiousity.
Thanks.
Edit: random "fuck microsoft". Windows Defender is giving me trouble today falsely flagging newly built and signed MSI packages on desktops but not on their own malware service. Grr. Utter tosser it is.