Author Topic: Test Equipment Anonymous (TEA) group therapy thread  (Read 1538413 times)

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Online med6753

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #33850 on: June 27, 2019, 11:22:25 am »

Lifting the bonnet once a week can spot these things...........

HUH?  :-// :-DD
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Online tautech

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #33851 on: June 27, 2019, 11:31:35 am »

Lifting the bonnet once a week can spot these things...........

HUH?  :-// :-DD
Might that be called a hood too ?  :P
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Online med6753

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #33852 on: June 27, 2019, 11:32:29 am »

Lifting the bonnet once a week can spot these things...........

HUH?  :-// :-DD
Might that be called a hood too ?  :P

Bingo!  :P :-DD
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Offline kj7e

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #33853 on: June 27, 2019, 11:32:54 am »
Sweet, is that an Alsatian then, look like one to me and they do grow at quite a rate.

Half Shepard, half boxer.  She is only 10 weeks now.
 

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #33854 on: June 27, 2019, 11:36:59 am »
Is her name Bingo? It sounds like those guys are talking about a pup in funny headgear doing some shoplifting down in the 'hood...  :wtf:

mnem
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Offline kj7e

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #33855 on: June 27, 2019, 11:40:25 am »

Woah, all that in a month?!? :o

You should see her eat  :scared:
 

Online med6753

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #33856 on: June 27, 2019, 11:47:29 am »
Is her name Bingo? It sounds like those guys are talking about a pup in funny headgear doing some shoplifting down in the 'hood...  :wtf:

mnem
Mmmm..... that's some GOOOOOD cough syrup...  :o

It sounds like you need to step away from the keyboard.  :-DD :-DD
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Online mnementh

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #33857 on: June 27, 2019, 11:56:26 am »
Woah, all that in a month?!? :o
You should see her eat  :scared:

    :-DD

It sounds like you need to step away from the keyboard.  :-DD :-DD

Yes... that might be best for everyone within splatter distance...  :o

mnem
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Offline Specmaster

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #33858 on: June 27, 2019, 04:25:53 pm »
Sweet, is that an Alsatian then, look like one to me and they do grow at quite a rate.

Half Shepard, half boxer.  She is only 10 weeks now.
You can clearly see the Shepherd in her, please don't dock her tail will you? Even with her being part Boxer, I still think it's so cruel. It's bad enough if something happens, like my cat did when a dog chewed her tail, she had to lose it to save her life.

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Offline bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #33859 on: June 27, 2019, 05:00:11 pm »
And I have at least four pieces of Tek kit with RIFAs that I haven't replaced because they are sitting in the repair queue but now I am convinced that they are going to spontaneously explode, laying waste to my collection.

That's too optimistic: the little bustards can also be found inside IEC sockets with or without switches and voltage selectors. One of those added 50% to the cost of my 8.5 digit DVM.

That's also too pessimistic: they don't spontaneously disassociate, they wait for 30s after the equipment is turned on.

I think the most fun one I had was the PM3217. It wasn’t even on. Just sitting there in the corner. Absolutely fine. Hmm what’s that funny smell? Don’t know. Close the window thinking it’s outside. Smell gets worse. Start sniffing around eventually leading to the corner of the living room. Nothing powered up. Can’t be that. So I put my hand on the scope and it’s red hot. Dive on the socket to turn it off and crack it open. Thick smoke comes out. Fortunately the scope was mostly saved because the butt half of it is separate and all the action happened behind a thick sheet of FR4 they install offer the hot side of the power supply.

They also turn up in other things. From experience Kenwood mixers, Henry hoovers, Miele stuff, older Philips televisions.
 

Offline Ero-Shan

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #33860 on: June 27, 2019, 05:20:47 pm »
There's a rare beast on German eBay: https://www.ebay.de/itm/RIESIGER-2-Strahl-Oszi-Oszilloskop-Oscilloscope-Tektronix-556-RM/283519389520?hash=item4203128f50:g:1n4AAOSwNz1dB55N

Even without plug-ins and in non-working condition, the machine is very tempting, especially at this price.
But the image of Ero-shan going there by train to collect it and carrying it home makes me cringe. :scared: No way this is going to happen.

Maybe one of the other Germans (with cars) is interested. The same seller offers an 585A (sans plug-in) also ..


Doesn't just have to be Germans, I'm overdue for a trip to Düsseldorf and Dortmund is only just up the road. A drop of Dortmunder would make a change from (the nevertheless excellent) Düsseldorf Altbier. Alas, the date for my next trip hasn't yet been set.

I certainly didn't intend to leave the rest of the world out, but it appeared unlikely that someone from the UK (or the south of France or ...) would drive to Dortmund within the next few days just to get this piece. If he did, he might as well drive it to my place.  :-DD
 

Offline tggzzz

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #33861 on: June 27, 2019, 05:36:44 pm »
And I have at least four pieces of Tek kit with RIFAs that I haven't replaced because they are sitting in the repair queue but now I am convinced that they are going to spontaneously explode, laying waste to my collection.

That's too optimistic: the little bustards can also be found inside IEC sockets with or without switches and voltage selectors. One of those added 50% to the cost of my 8.5 digit DVM.

That's also too pessimistic: they don't spontaneously disassociate, they wait for 30s after the equipment is turned on.

I think the most fun one I had was the PM3217. It wasn’t even on. Just sitting there in the corner. Absolutely fine. Hmm what’s that funny smell? Don’t know. Close the window thinking it’s outside. Smell gets worse. Start sniffing around eventually leading to the corner of the living room. Nothing powered up. Can’t be that. So I put my hand on the scope and it’s red hot. Dive on the socket to turn it off and crack it open. Thick smoke comes out. Fortunately the scope was mostly saved because the butt half of it is separate and all the action happened behind a thick sheet of FR4 they install offer the hot side of the power supply.

They also turn up in other things. From experience Kenwood mixers, Henry hoovers, Miele stuff, older Philips televisions.

Obviously it depends on where the caps are relative to the switch.

In some equipment a reference is left permanently powered; the switch is only for the other bits.
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Offline bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #33862 on: June 27, 2019, 05:53:52 pm »
Most of the ones I’ve seen appear before the switch. Of course Schaffer get their dirty fingers in there too with the RIFA hand grenades.
 

Offline Specmaster

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #33863 on: June 27, 2019, 06:00:13 pm »
Likewise here, I think that designs like that should be bloody banned, even more dangerous than a Boeing 737-Max8 because they can only go into a fatal dive when crewed up and in use.
Who let Murphy in?
 
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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #33864 on: June 27, 2019, 06:32:47 pm »
1/2 of the shack roof screwed down instead of lifted and missing nails = A First triple pink Gin painkiller because I am not as young as I once was.

1/2 a Lemon to avoid scurvy and it counts as fruit  ;D
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Online med6753

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #33865 on: June 27, 2019, 06:34:42 pm »
 :-DD
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Offline bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #33866 on: June 27, 2019, 06:36:01 pm »
Hahahaha that's awesome  :-+  :-DD
 

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #33867 on: June 27, 2019, 06:42:32 pm »
Yep.  :-+

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Offline nixiefreqq

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #33868 on: June 27, 2019, 09:08:16 pm »
Most of the ones I’ve seen appear before the switch. Of course Schaffer get their dirty fingers in there too with the RIFA hand grenades.

these are on order.   price seems pretty good.

they should solve my problem.......right?  (if not i may have to misquote Shakespeare again)

https://www.ebay.com/itm/1uF-275VAC-275V-250V-10-Panasonic-polyester-X2-Safety-capacitors-10-pcs/301498310342?epid=1718297293&hash=item4632b31ec6:g:olEAAOSw1vlUwCD5

https://www.ebay.com/itm/25-Iskra-001uF-300VAC-300V-275V-250V-100V-Y2-safety-polypropylene-capacitors/300946999952?hash=item4611d6ca90:g:XJAAAOxyXTRSBaSE
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Online beanflying

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #33869 on: June 27, 2019, 11:20:10 pm »
Randomness - Ginclub  >:D
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Offline kj7e

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #33870 on: June 27, 2019, 11:22:33 pm »
You can clearly see the Shepherd in her, please don't dock her tail will you? Even with her being part Boxer, I still think it's so cruel. It's bad enough if something happens, like my cat did when a dog chewed her tail, she had to lose it to save her life.

My wife and I prefer dogs with tails.  Not sure why anyone would cut them off.
 

Offline bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #33871 on: June 27, 2019, 11:23:25 pm »
Most of the ones I’ve seen appear before the switch. Of course Schaffer get their dirty fingers in there too with the RIFA hand grenades.

these are on order.   price seems pretty good.

they should solve my problem.......right?  (if not i may have to misquote Shakespeare again)

https://www.ebay.com/itm/1uF-275VAC-275V-250V-10-Panasonic-polyester-X2-Safety-capacitors-10-pcs/301498310342?epid=1718297293&hash=item4632b31ec6:g:olEAAOSw1vlUwCD5

https://www.ebay.com/itm/25-Iskra-001uF-300VAC-300V-275V-250V-100V-Y2-safety-polypropylene-capacitors/300946999952?hash=item4611d6ca90:g:XJAAAOxyXTRSBaSE

Yeah they will do. Main thing is to watch the lead pitch.

I bought replacement RIFA units. RIFA out RIFA in. They wont explode for 10 years :)
 

Online mnementh

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #33872 on: June 27, 2019, 11:37:09 pm »
*gurgles wetly* argg. Still sick.

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Offline BU508A

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #33873 on: June 27, 2019, 11:44:29 pm »
Anybody some helpful advice how to solder these 1mm² thingies?

https://www.mouser.de/ProductDetail/667-FJ4B01120L1
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Offline tggzzz

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #33874 on: June 28, 2019, 12:18:50 am »
Anybody some helpful advice how to solder these 1mm² thingies?

https://www.mouser.de/ProductDetail/667-FJ4B01120L1

Unless research indicates any better alternatives, with only a few solder balls I would treat them as SMD devices:
  • if creating a whole board, use the saucepan technique, optionally with sand to buffer the heat
  • if replacing one component, protect surrounding components with polyimide tape, blast it off with a hot air gun, put new one on with a hot air gun set to a low airflow
You can correctly infer that I haven't done BGAs myself.
There are lies, damned lies, statistics - and ADC/DAC specs.
Glider pilot's aphorism: "there is no substitute for span". Retort: "There is a substitute: skill+imagination. But you can buy span".
Having fun doing more, with less
 
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