Author Topic: Test Equipment Anonymous (TEA) group therapy thread  (Read 2026453 times)

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Offline bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #39250 on: September 20, 2019, 08:34:48 am »
Still got Netflix and TEA. How the hell else am I going to watch Star Trek on demand?  :-DD
 

Online BU508A

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #39251 on: September 20, 2019, 08:39:53 am »
@Kosmic: This General Radio 1644A is looking nice!

I looked around ebay and found this, not cheap, though:   :scared:
It looks also very different than the one from Kosmic.  :-//

https://www.ebay.com/itm/200698733401

Seems, that taking good pictures is still kind of rocket science these days.  :--

« Last Edit: September 20, 2019, 09:53:04 am by BU508A »
“Chaos is found in greatest abundance wherever order is being sought. It always defeats order, because it is better organized.”            - Terry Pratchett -
 

Online BU508A

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #39252 on: September 20, 2019, 08:41:08 am »
Still got Netflix and TEA. How the hell else am I going to watch Star Trek on demand?  :-DD

Isn't it more like to keep your descendants calm?  >:D  ;D
« Last Edit: September 20, 2019, 09:13:56 am by BU508A »
“Chaos is found in greatest abundance wherever order is being sought. It always defeats order, because it is better organized.”            - Terry Pratchett -
 

Offline Sam Spastic

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #39253 on: September 20, 2019, 09:17:00 am »
I think I found out why the TI-95 won't power up.  :-DD




My AKG wireless system recommended

  • 8.5. Battery Life
    Use fresh AA size 1.5-V batteries only!We recommend
    the following IEC LR61 (AA size) alkaline battery types:
    Dry batteries
    BRAND guaranteed typical
    DURACELL 12 hrs. 12 hrs. 30 min.
    PANASONIC 12 hrs. 14 hrs.
    VARTA 10 hrs. 12 hrs.
    If you intend to use any batteries other than those given in the
    above table, contact AKG Vienna.
    Rechargeable batteries (fully charged)
    TYPE guaranteed typical
    NiCd 4 hrs. 4 hrs. 30 min.
    NiMH 6 hrs. 30 min. 7 hrs.

In my old paper manual they listed Ray-O-Vac as up to 6hrs.
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Online med6753

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #39254 on: September 20, 2019, 11:53:52 am »
Still got Netflix and TEA. How the hell else am I going to watch Star Trek on demand?  :-DD

Netflix and Amazon Prime Video here. I gave my cable TV the boot about a year ago and don't miss it a bit.....including the nearly $50 USD/mo they were charging for crap channel selection.
An old gray beard with an attitude.
 
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Online med6753

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #39255 on: September 20, 2019, 11:58:09 am »
I think I found out why the TI-95 won't power up.  :-DD



My AKG wireless system recommended

  • 8.5. Battery Life
    Use fresh AA size 1.5-V batteries only!We recommend
    the following IEC LR61 (AA size) alkaline battery types:
    Dry batteries
    BRAND guaranteed typical
    DURACELL 12 hrs. 12 hrs. 30 min.
    PANASONIC 12 hrs. 14 hrs.
    VARTA 10 hrs. 12 hrs.
    If you intend to use any batteries other than those given in the
    above table, contact AKG Vienna.
    Rechargeable batteries (fully charged)
    TYPE guaranteed typical
    NiCd 4 hrs. 4 hrs. 30 min.
    NiMH 6 hrs. 30 min. 7 hrs.

In my old paper manual they listed Ray-O-Vac as up to 6hrs.

They can list whatever they want.  ;D I also had pulled the memory card as mentioned by mnem and the damn thing is still tits up so it went into the parts bin.    :-BROKE
An old gray beard with an attitude.
 

Online med6753

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #39256 on: September 20, 2019, 12:29:17 pm »
I'm retired. *   :popcorn: Normally I think about the day before what I'm going to do the next day. But today I got nothing.  :-// I think tomorrow I'm going to toss the two 485's on the bench and fix that trigger issue. But today...nada. So I guess I'll hang here and see what kind of chaos I can create.  :-DD

* I know I keep bringing this up and rubbing it in. But you know what, I got my first part time job in 1969 and basically from that point until January of this year I worked. 50 years.  :o I have to keep reminding myself that I don't have to do a freaking thing if I don't want to.  :-+   
An old gray beard with an attitude.
 
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Offline bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #39257 on: September 20, 2019, 12:40:49 pm »
I'm being paid to eat Stroopwafels at the moment. That's how you work  :-DD
 

Online med6753

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #39258 on: September 20, 2019, 12:45:13 pm »
I'm being paid to eat Stroopwafels at the moment. That's how you work  :-DD

There you go sending me off the google again. This is too much like work.  :P :-DD

Look delicious.  :-+
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Offline factory

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #39259 on: September 20, 2019, 01:00:29 pm »
Sometimes ago I realized I could only measure resistance to about 1-2 GOhm with my best multimeter. This was completely unacceptable and I decided to correct the situation. I looked quickly at the cheap insulation tester from China but decided against it, because of the limited range and accuracy. I ended up finding something a lot better but also heavier :)

Got myself a General Radio 1644a. At the core, this is a self-contained wheatstone bridge designed to measure high value resistors. I can now measure up to a Peta Ohm (1000 Tera Ohm)  :-DD The device can also be used for insulation testing and test capacitor for leakage.



The interesting part about the Genrad 1644a is the self-calibration feature. You don't need super expensive equipment to calibrate and adjust the instrument. I serviced the instrument according to the manual and everything is now in specs. The main rheostat is quite impressive and can be adjusted with its 8 adjustment screws.




Very nice, it even has three vacuum bulbs, not seen much using those wire ended miniature ones either.
I finally found a Yokogawa built HP 4329A (with test leads) for my collection this year, plus there is a Levell TM14 here which is a toy in comparison with your Genrad one.

David
 

Offline Sam Spastic

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #39260 on: September 20, 2019, 01:01:21 pm »

That is a Maglite sacrificed to the CRL gods.
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Offline bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #39261 on: September 20, 2019, 01:02:56 pm »
I'm being paid to eat Stroopwafels at the moment. That's how you work  :-DD

There you go sending me off the google again. This is too much like work.  :P :-DD

Look delicious.  :-+

They're amazing. Should be easy to get in the US as well seeing as it is someone from the US who got me hooked on them  :-DD

Currently humming and hawing over going to "The National Hamfest" here on 28th. It's a 3.5 hour drive though which I'm not sure I can be arsed with. Plus it's in a place I know very well, perhaps unfortunately, as I used to work there in 2002-ish as a sysadmin. But but but there might be goodies there and it's the dead season for hamfests now here :(

edit: might wild camp the night before and make it a two day thing.
« Last Edit: September 20, 2019, 01:06:45 pm by bd139 »
 

Offline factory

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #39262 on: September 20, 2019, 01:08:50 pm »
If the damaged knob for the 3460A is part # 0370-0104 I may be able to help, if I can find it of course.

Yes, that is exactly the knob. In my case the one for the "Rear - Front" switching.
Much appreciated if you can find one. Thanks.  :-+

I've spent quite a while looking but still haven't found those #0370-0104, annoyingly they are not in the tub with all the others, which can only mean I used one and forgot to put the rest back.  |O All I have left is the sellers picture from 9 years ago.
839950-0

If they do turn up I will let you know.

David
 
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Online med6753

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #39263 on: September 20, 2019, 01:15:48 pm »
I'm being paid to eat Stroopwafels at the moment. That's how you work  :-DD

There you go sending me off the google again. This is too much like work.  :P :-DD

Look delicious.  :-+

They're amazing. Should be easy to get in the US as well seeing as it is someone from the US who got me hooked on them  :-DD

Currently humming and hawing over going to "The National Hamfest" here on 28th. It's a 3.5 hour drive though which I'm not sure I can be arsed with. Plus it's in a place I know very well, perhaps unfortunately, as I used to work there in 2002-ish as a sysadmin. But but but there might be goodies there and it's the dead season for hamfests now here :(

edit: might wild camp the night before and make it a two day thing.

Turns out I can get them at Target:

https://www.target.com/p/daelmans-stroopwafels-with-caramel-10-94oz/-/A-16972579?ref=tgt_adv_XS000000&AFID=google_pla_df&fndsrc=tgtao&CPNG=PLA_Grocery%2BShopping_Local&adgroup=SC_Grocery&LID=700000001170770pgs&network=g&device=c&location=9004843&ds_rl=1246978&ds_rl=1247077&ds_rl=1246978&gclid=EAIaIQobChMI08mP9bzf5AIVi5-zCh1vqw-eEAQYASABEgInp_D_BwE&gclsrc=aw.ds

I plan on going to a big hamfest on Oct 13th in Connecticut.

Oh....and just so my attitude today is clear. I present....   :-DD
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Offline Kosmic

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #39264 on: September 20, 2019, 01:20:06 pm »
Does it also measure air humidity and fingerprint conductivity?
With the right jig it's probably possible yes. I need to learn how to make my own ceramic substrate  :)

Are you going to be going down the PTFE wire insulation route now?

Don't worry I’m already cover. Got multiple bobbins of PTFE cables of different diameters in the lot I bought from the silent keys in Vermont. Right now with the cable and connectors hanging from the instrument, air is doing a good job at isolating the unknown terminals.
« Last Edit: September 20, 2019, 01:59:40 pm by Kosmic »
 

Offline bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #39265 on: September 20, 2019, 01:20:46 pm »
Oh....and just so my attitude today is clear. I present....   :-DD

Hahahaha  :-DD

And I though it was Bezos' flying wang:

 

Offline Kosmic

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #39266 on: September 20, 2019, 01:24:45 pm »
I looked around ebay and found this, not cheap, though:   :scared:
Divide that price by 10 and it's around what I paid for mine :)

It looks also very different than the one from Kosmic.  :-//
I think the Genrad 1644 was introduced in the late 60s and they stopped production somewhere in the 80s I think. The black one are the old version. The one I got (light grey) was built around 1974. Same instrument though.
 
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Offline Kosmic

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #39267 on: September 20, 2019, 01:28:56 pm »
I'm retired. *   :popcorn: Normally I think about the day before what I'm going to do the next day. But today I got nothing.  :-// I think tomorrow I'm going to toss the two 485's on the bench and fix that trigger issue. But today...nada. So I guess I'll hang here and see what kind of chaos I can create.  :-DD

* I know I keep bringing this up and rubbing it in. But you know what, I got my first part time job in 1969 and basically from that point until January of this year I worked. 50 years.  :o I have to keep reminding myself that I don't have to do a freaking thing if I don't want to.  :-+

I completely approve, sometimes it's just fun to do nothing  :)
 

Offline factory

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #39268 on: September 20, 2019, 01:30:00 pm »
Worked on the 3400A tonight. Powers up. Reads correctly on the .1 to 3V scales, doesn't do so well on the others. A lot of erratic meter movement. I just printed schematics for it, so I don't know much but I am wondering if one or both of the thermocouples has been fried... has anyone here tested the thermocouples on one of these?

That's the first question. The second is, does anyone have a parts mule? I need to replace the plug socket and fuse holder (worst case) or the whole back panel assembly (best case).  The plug socket is the old oval shape, so a back panel assembly with a modern plug socket would be ideal. PM me if you have something I might be able to use.

There is a parts mule here, it may even have one of those awful IEC connectors too. The previous owner EOLed the thermocouples and because they couldn't be arsed to fully screw it back together or pack it properly, the meter got busted on it's journey here.

David
 

Online BU508A

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #39269 on: September 20, 2019, 01:34:30 pm »
If the damaged knob for the 3460A is part # 0370-0104 I may be able to help, if I can find it of course.

Yes, that is exactly the knob. In my case the one for the "Rear - Front" switching.
Much appreciated if you can find one. Thanks.  :-+

I've spent quite a while looking but still haven't found those #0370-0104, annoyingly they are not in the tub with all the others, which can only mean I used one and forgot to put the rest back.  |O All I have left is the sellers picture from 9 years ago.
(Attachment Link)

If they do turn up I will let you know.

David

Wow! Thank you very much, appreciate it.  :-+

This would be very cool if they would show up anyhow. Fingers crossed.

Let me know if I can do something for you.  :)

Mounty
“Chaos is found in greatest abundance wherever order is being sought. It always defeats order, because it is better organized.”            - Terry Pratchett -
 

Offline Kosmic

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #39270 on: September 20, 2019, 01:36:04 pm »
Sometimes ago I realized I could only measure resistance to about 1-2 GOhm with my best multimeter. This was completely unacceptable and I decided to correct the situation. I looked quickly at the cheap insulation tester from China but decided against it, because of the limited range and accuracy. I ended up finding something a lot better but also heavier :)

Got myself a General Radio 1644a. At the core, this is a self-contained wheatstone bridge designed to measure high value resistors. I can now measure up to a Peta Ohm (1000 Tera Ohm)  :-DD The device can also be used for insulation testing and test capacitor for leakage.



The interesting part about the Genrad 1644a is the self-calibration feature. You don't need super expensive equipment to calibrate and adjust the instrument. I serviced the instrument according to the manual and everything is now in specs. The main rheostat is quite impressive and can be adjusted with its 8 adjustment screws.




Very nice, it even has three vacuum bulbs, not seen much using those wire ended miniature ones either.
I finally found a Yokogawa built HP 4329A (with test leads) for my collection this year, plus there is a Levell TM14 here which is a toy in comparison with your Genrad one.

David

The HP 4329A look like a fine instrument. kj7e got one I think and he posted some pictures a while ago. Just added to my search list :)
« Last Edit: September 20, 2019, 01:57:41 pm by Kosmic »
 

Online med6753

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #39271 on: September 20, 2019, 02:01:14 pm »
I'm retired. *   :popcorn: Normally I think about the day before what I'm going to do the next day. But today I got nothing.  :-// I think tomorrow I'm going to toss the two 485's on the bench and fix that trigger issue. But today...nada. So I guess I'll hang here and see what kind of chaos I can create.  :-DD

* I know I keep bringing this up and rubbing it in. But you know what, I got my first part time job in 1969 and basically from that point until January of this year I worked. 50 years.  :o I have to keep reminding myself that I don't have to do a freaking thing if I don't want to.  :-+

I completely approve, sometimes it's just fun to do nothing  :)

Well I did go out to the garage and pulled out the Civic and then swept the floor. And I do need to go into town and get a few provisions so I guess I'll take the Civic out for a drive and re-discover the pleasures of driving a manual gearbox.  :-+
An old gray beard with an attitude.
 

Offline nixiefreqq

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #39272 on: September 20, 2019, 02:38:53 pm »
swmbo went out to do some shopping.

snuck into her secret cookie stash and was settling down to catch up on TEA.

almost choked when i saw bd's posting.   never heard of them till last week when swmbo went to a dutch store down in maryland.

what is this place....the twilight zone?

ps  in other south central pa news.   unit 1 at three mile island will go off line for good today.  (could not compete with an almost full staff and only one on line reactor)
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Offline bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #39273 on: September 20, 2019, 03:03:10 pm »
Bingo. You are stroopwaffeled up :-+  :-DD
 

Online med6753

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #39274 on: September 20, 2019, 03:15:56 pm »
swmbo went out to do some shopping.

snuck into her secret cookie stash and was settling down to catch up on TEA.

almost choked when i saw bd's posting.   never heard of them till last week when swmbo went to a dutch store down in maryland.

what is this place....the twilight zone?



An old gray beard with an attitude.
 


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