Author Topic: Test Equipment Anonymous (TEA) group therapy thread  (Read 14556949 times)

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Offline Vince

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #111350 on: January 16, 2022, 02:42:18 pm »
I won't ask for proof because it's too cold outside, I am very nice and I want you to stay warm  ;D
 
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Offline mnementh

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #111351 on: January 16, 2022, 02:49:42 pm »
Great Lizard:   Playfield suffers abrasions, electronics condition: unknown.
This is true... That is also true!    :-DD

mnem

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Offline mnementh

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #111352 on: January 16, 2022, 03:07:53 pm »
The plug-in cabinet is done. And will be stored under bench 2 as shown. And yes, that's one of the Type 547's that will be the next project. The other one is behind it. Both have the HV issue that I will attempt to repair without replacing the HV transformer...

Your collection of tired iron sure has grown of late... looking good.  :clap:

You think you're at the point where you can turn off the heat and just use "the triodes' glow" to keep warm...?  :-DD

mnem
we need a "happy broken scope" emoji...  >:D
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Offline Specmaster

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #111353 on: January 16, 2022, 03:19:35 pm »
I still have suspicions about the garage and the Civic !  :popcorn:

Well rest easy my son. The garage exterior is red, the interior is natural stone. And the Civic is black.

Proof can be provided if requested.
The only room that I could see that was devoid of TE was the kitchen, why is that?
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Offline Andrew_Debbie

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #111354 on: January 16, 2022, 03:21:50 pm »
Geez, what the bleeding hell is going on over in America, LA in particular? I've just seen this BBC TV report of goods trains being robbed, even while they are moving. The thieves they say are looking high value items and just throwing other stuff of the trains.

https://www.bbc.co.uk/news/av/world-us-canada-60006306

Are you sure it was the news, and not Fast & Furious 5?   :-DD

My parents still live in Los Angeles.  LA has always had a lot of drugs and drug crime, but  this is new.   

It used to be mail boxes.  Maybe it still is.   Thieves would pop open the boxes at condo and apartment boxes and take everything.   

Happened to us twice in San Diego.   Along with merchandise, they would be looking for anything to use for identity theft or actual credit and debit cards. 



Unrelated?  -- There are a lot of visible homeless in LA.  There are entire blocks with tents on the streets.    The official count is about 66,000 but it feels like more than that.      We both notice how many more tent there were on our last visit.



https://www.npr.org/2020/06/12/875888864/homelessness-in-los-angeles-county-rises-sharply?t=1642317980726

Kind of sad that this US State with an economy so large it would rank 5th in the world by country has such a poor record in this regard.


We've been resident outside of the US for almost 14 years now.   From my perspective todays Americans view socialism and communism as the same thing.  Social housing, healthcare and well just about everything besides head start are underfunded or non-existent.

But that isn't the only reason.

The poor-rich contrasts are striking in part because there is a lot of wealth in places like Los Angeles.   The wealthy and the wealthy middle class live well.  Others not so much.



We very much like the lifestyle here in North Wales.

If we were still in the US, we'd have a large house. I'd have more money to spend on TE and a larger workbench.    But I prefer our little 820sq ft. cottage in this quiet neighbourhood.


There is little crime. Only a handful of people sleep outside.  (There are always a few, no matter where you are)   The NHS is creaking under the strain of Covid, but everyone can get health care that is free at the point of delivery.   



 
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Offline Specmaster

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #111355 on: January 16, 2022, 03:27:40 pm »
@Vince
Yeah, thanks for the link for that Metrix 51, its so basic though that one. I agree about the battery issues and meters. all it takes is one battery to leak and not be detected until its too late and there goes your investment if unlucky and never spotted it in time. You really should think about bench meters that are mains powered. I have 7 of those, 1 of which is also battery powered, in the event of a power cut I can still work on battery. Thats a HP3466A which has SLA battery fitted and charges automatically when connected to the mains.

Here is a link to a mains powered Metrix bench meter that you might like to look at https://www.leboncoin.fr/bricolage/2068256978.htm  :-+
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Offline med6753

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #111356 on: January 16, 2022, 03:56:39 pm »
I still have suspicions about the garage and the Civic !  :popcorn:

Well rest easy my son. The garage exterior is red, the interior is natural stone. And the Civic is black.

Proof can be provided if requested.
The only room that I could see that was devoid of TE was the kitchen, why is that?

Au contraire, the bathroom is devoid of TE too.  :P :-DD

Edit.....truth be told I'm only allowed under good graces to use the kitchen. When the Lady Cop is here that's HER space.  :o
« Last Edit: January 16, 2022, 04:00:43 pm by med6753 »
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Offline AVGresponding

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #111357 on: January 16, 2022, 04:11:25 pm »
As an electrician, give me battery power any day.
Grinders, circular saws, etc can stay corded as they use a lot of power. But drills, drivers, impact drivers, sabre saws, etc etc can go stick power cords where the sun don't shine. :D

Angle grinders, circular saws and mitre saws all run happily on batteries now. Chop saws are still best corded, if you're cutting strut anyway.

The only reason for using a corded circular saw nowadays is for dust extraction (the vacuum extractors are all 110V on our sites), so it's not unusual to see our joiners working outside so they don't have to bother about the dust.
Our heating engineers don't give a fuck, full stop, and happily grind away with sparks flying in any situation...
nuqDaq yuch Dapol?
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Offline Vince

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #111358 on: January 16, 2022, 04:36:43 pm »
@Vince
Yeah, thanks for the link for that Metrix 51, its so basic though that one. I agree about the battery issues and meters. all it takes is one battery to leak and not be detected until its too late and there goes your investment if unlucky and never spotted it in time. You really should think about bench meters that are mains powered. I have 7 of those, 1 of which is also battery powered, in the event of a power cut I can still work on battery. Thats a HP3466A which has SLA battery fitted and charges automatically when connected to the mains.

Here is a link to a mains powered Metrix bench meter that you might like to look at https://www.leboncoin.fr/bricolage/2068256978.htm  :-+

Yeah I have been contemplating these for a few years now. Have never coughed the money though, because to me a bench meter needs to be high-end, otherwise what's the point. So super accurate, at least an order of magnitude more accurate than my best DMM which is the MX56 at 0.025% +/ 1digit. Would also want 4 wire resistance measurements, and GPIB, and hopefully dual display to show both DC and AC at the same time, when checking power rails for example.

Problem with these Metrix bench meters is they offer none of that. This MX 554 we are talking about here is just the handheld MX 54 in a different case, no more no less.

But over time, I feel I am getting weaker and weaker and might fall for them. Mostly because the MX 54 is an excellent DMM so having it in bench format doesn't make it any less good so to speak... but it does add a very large green/yellow LCD that I love. Makes for an easy to read display, while keeping the bench clear. Of course it being at a fixed place can be a problem too, but having both a handheld and a bench version would give me the best of both worlds, could use the one that's best suited to a particular scenario.

Also, the price difference between these meters, and a "real/serious" bench meter is vast. The HP VFD popular one is 500 Euros or so, and is not even good enough IIRC, to meet my 0.0025% accuracy goal.
So it's not like getting one of these Metrix bench meters would be seen as a replacement / alternative to a fancy HP one. Price wise there is a huge gap, so it does not have to be either this or that... it can be this AND that, each serving a different purpose.  There is the space issue to be considered... multiple of everything in general, is not viable as everything needs to fit on the shelves. However be it this Metrix meter, or the HP VFD ones, are half width compact pieces, so having one of each is not a big deal, it's doable.

So...yeah, I feel I might get a Metrix bench meter one day.... just because I like the looks of these MX 554 and their cool display....

...but the one you found is too expensive at 130 Euros. MX 554 being a MX 54 at heart, you can't possibly justify spending MX 56 money for it !

This one that popped up just 4 days ago, looks better to me, at 100 Euros :

https://www.leboncoin.fr/outillage_materiaux_2nd_oeuvre/2100574207.htm

Might contact the seller see if he would take an offer for 85 or 90 Euros...

« Last Edit: January 16, 2022, 05:12:15 pm by Vince »
 
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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #111359 on: January 16, 2022, 04:41:23 pm »
Well, the PG506 Calibration Generator has passed preliminary tweaking after a complete overhaul, save a bit of excessive overshoot on the positive going fast rise output, will have to poke that a little more. There are a few factory selected resistors I can tweak.
I ended up replacing all the eletro capacitors, thoroughly cleaning the wafer switches (Some were pretty gummed up), replacing out of spec carbon composite resistors and giving the whole thing a spit polish.
I also tested the two relays and they tested fine, all contacts are extremely low resistance when using 4-wire measurement, thank the gods of test equipment.

I'll replace a couple of the trimpots with Burns multiturn pots to give me finer control of the adjustment to really dial things in. I found some of those crappy 'open frame' white trimpots with the castellated grey dial are gone to shit as usual...
Also, I think the Variable Amplitude pot needs some deoxit love, so I'll see if I can pull that one open to get inside, it's a bit scratchy and it appears to be one that can be taken apart with some care.


Once it's all dialled in, all I need to do is figure out how to re-apply the silk screen to the display, and I need to find or make a new Amplitude knob. The one on my unit basically disintegrated and all I have left is the metal insert.

Anyone have one of these knobs by chance? (Part number 366-1711-02 I think)
https://w140.com/tekwiki/wiki/PG506
(See the PG506 newer version, it's also the main picture on the right).
Where does all this test equipment keep coming from?!?

https://www.youtube.com/NearFarMedia/
 
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Offline Ice-Tea

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #111360 on: January 16, 2022, 04:42:45 pm »
For all the Metrix crazies: have a few GX5000's left. If you're interested, PM me.

Offline GreyWoolfe

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #111361 on: January 16, 2022, 04:47:32 pm »
in other news I attained my 35kg weight loss. Going for the 40 kg mark.

Many congratulations to you.  Up to 52 kilos weight loss myself, end goal is about 88.5 kilos.  Mrs. GreyWoolfe is looking for a total of 45 Kilos of weight loss herself and she is 1/2 way there.  I have to schedule an appointment with Gastro-enterology to have a colonoscopy done.  A few years ago, he was pushing bariatric surgery because of my weight.  Boy is he going to be surprised when he sees me. ;D  It is amazing what healthy eating, portion control and moderate exercise can do once you get your head space correct.  Mrs. GreyWoolfe and I used to delude ourselves, saying we were fat and happy.  We are both experiencing happy now that we are getting control of our lives.  Better late than never.

As an electrician, give me battery power any day.
Grinders, circular saws, etc can stay corded as they use a lot of power. But drills, drivers, impact drivers, sabre saws, etc etc can go stick power cords where the sun don't shine. :D

Angle grinders, circular saws and mitre saws all run happily on batteries now. Chop saws are still best corded, if you're cutting strut anyway.

The only reason for using a corded circular saw nowadays is for dust extraction (the vacuum extractors are all 110V on our sites), so it's not unusual to see our joiners working outside so they don't have to bother about the dust.
Our heating engineers don't give a fuck, full stop, and happily grind away with sparks flying in any situation...


Too many corded tools here to be financially viable to replace with battery power.  The big kill/maim tools; drill press, 2 mitre saws, band saw, bench grinder and jointer/planer will always be corded.  Circular saw, jig saw, 2 angle grinders and 3 different sanders will stay corded as long as I can keep them running as most of these were cheap at yard sales/thrift stores and needed minimal attention if any.  My drill/drivers and impact drivers are battery, no need for cords there, they do all I need.
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Offline SilverSolder

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #111362 on: January 16, 2022, 04:51:31 pm »
As an electrician, give me battery power any day.
Grinders, circular saws, etc can stay corded as they use a lot of power. But drills, drivers, impact drivers, sabre saws, etc etc can go stick power cords where the sun don't shine. :D

As usual, it boils down to what works best in a given situation!

For the average home owner, using their drill once every 2 years, corded is absolutely the way to go LOL! :D
 

Offline AVGresponding

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #111363 on: January 16, 2022, 04:52:24 pm »
For all the Metrix crazies: have a few GX5000's left. If you're interested, PM me.

Mmmm... LED dot matrix... 

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Offline mansaxel

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #111364 on: January 16, 2022, 05:00:24 pm »

Edit.....truth be told I'm only allowed under good graces to use the kitchen. When the Lady Cop is here that's HER space.  :o

There's room for TE there too.

Offline Vince

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #111365 on: January 16, 2022, 05:01:15 pm »
For all the Metrix crazies: have a few GX5000's left. If you're interested, PM me.

No you don't  ! I don't see them in your ebay shop !!  ;D

... that means they are not ready for sale... that means they are broken !  ;D

Mine is too but there is no service manual for it anywhere  ! Contacted Metrix directly and they said "yeah we remember that one, but have no info on it as we outsourced its R&D, we didn't design it ourselves ". Bummer  >:(
 

Offline Vince

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #111366 on: January 16, 2022, 05:06:27 pm »
For all the Metrix crazies: have a few GX5000's left. If you're interested, PM me.

Mmmm... LED dot matrix... 



Because I am so kind, I will let you lick mine, if you promise to clean it well once you are finished with it ! 8)

 
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Offline Ice-Tea

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #111367 on: January 16, 2022, 05:26:26 pm »
For all the Metrix crazies: have a few GX5000's left. If you're interested, PM me.

No you don't  ! I don't see them in your ebay shop !!  ;D

... that means they are not ready for sale... that means they are broken !  ;D

Mine is too but there is no service manual for it anywhere  ! Contacted Metrix directly and they said "yeah we remember that one, but have no info on it as we outsourced its R&D, we didn't design it ourselves ". Bummer  >:(

Actually like new, in a carry bag. With manual (user, not service). But there are quite of a few of those on eBay, I'd rather wait a bit  :popcorn:

Offline factory

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #111368 on: January 16, 2022, 05:35:59 pm »
Dana 5100 DMM update:

I assembled the PROM programmer and smoke tested it.  So far, so good.  I'm waiting on two DG441CJ  analog switch ICs I ordered from Maxim.    They disconnect the PROM data lines from the left hand 'LS47s when the device is write-enabled.  Otherwise the 22V programming pulse would destroy the LS47.

Once the DG441s are here, I'll test reading with a blank Soviet PROM before risking one of my NOS DM8577s  or attempting to read what I can from the '188 in the meter.



The parts from Maxim should be here in a few days. I don't normally buy chips from the manufacturers.  I've had to resort to this several times lately.



I've also bought some Soviet 74188 clones to try & fix the second 5340A control board (according to the manual there are four in total, two of which are on the control board), still waiting for them to arrive.
Earlier this week I got the rare opportunity to work in the lab for a day, while I was there I had a read of the manual for the Expro 60/80 programmer & it will read/write the 74188, but knowing my luck the ancient PC that it is part of, will be dead/emit smoke/or HDD corrupted by now.  :-//

David
 
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Offline mansaxel

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #111369 on: January 16, 2022, 05:47:10 pm »

Our heating engineers don't give a fuck, full stop, and happily grind away with sparks flying in any situation...[/color][/size][/b]

Here, the insurance company won't pay a single öre (1/100 SEK) if you can't prove that all involved staff were cleared for "hot work" if there's a fire.

As usual, it's led to a major flustercuck of "education companies" spoon-feeding people the right answers so as to guarantee them passing the simple test. Follow the letter, not the intention.

Examples of hot work:

  • Anything with a naked flame
  • Welding
  • Angle Grinding
  • Hot air gun on shrink toobing et. c
  • Soldering
  • et c.

I am thus officially not cleared to handle a soldering iron at work. I have not yet had to, but that's probably only a question of time.

Offline Vince

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #111370 on: January 16, 2022, 06:29:50 pm »
For all the Metrix crazies: have a few GX5000's left. If you're interested, PM me.

No you don't  ! I don't see them in your ebay shop !!  ;D

... that means they are not ready for sale... that means they are broken !  ;D

Mine is too but there is no service manual for it anywhere  ! Contacted Metrix directly and they said "yeah we remember that one, but have no info on it as we outsourced its R&D, we didn't design it ourselves ". Bummer  >:(

Actually like new, in a carry bag. With manual (user, not service). But there are quite of a few of those on eBay, I'd rather wait a bit  :popcorn:


Ah OK, I understand then ! When I got mine a few years back, was on Ebay UK, they were extremely rare. Well that UK one was the only one I found back then anyway.


« Last Edit: January 16, 2022, 07:52:43 pm by Vince »
 
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Offline Vince

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #111371 on: January 16, 2022, 06:33:46 pm »
@Vince
Yeah, thanks for the link for that Metrix 51, its so basic though that one. I agree about the battery issues and meters. all it takes is one battery to leak and not be detected until its too late and there goes your investment if unlucky and never spotted it in time. You really should think about bench meters that are mains powered. I have 7 of those, 1 of which is also battery powered, in the event of a power cut I can still work on battery. Thats a HP3466A which has SLA battery fitted and charges automatically when connected to the mains.

Here is a link to a mains powered Metrix bench meter that you might like to look at https://www.leboncoin.fr/bricolage/2068256978.htm  :-+

Yeah I have been contemplating these for a few years now. Have never coughed the money though, because to me a bench meter needs to be high-end, otherwise what's the point. So super accurate, at least an order of magnitude more accurate than my best DMM which is the MX56 at 0.025% +/ 1digit. Would also want 4 wire resistance measurements, and GPIB, and hopefully dual display to show both DC and AC at the same time, when checking power rails for example.

Problem with these Metrix bench meters is they offer none of that. This MX 554 we are talking about here is just the handheld MX 54 in a different case, no more no less.

But over time, I feel I am getting weaker and weaker and might fall for them. Mostly because the MX 54 is an excellent DMM so having it in bench format doesn't make it any less good so to speak... but it does add a very large green/yellow LCD that I love. Makes for an easy to read display, while keeping the bench clear. Of course it being at a fixed place can be a problem too, but having both a handheld and a bench version would give me the best of both worlds, could use the one that's best suited to a particular scenario.

Also, the price difference between these meters, and a "real/serious" bench meter is vast. The HP VFD popular one is 500 Euros or so, and is not even good enough IIRC, to meet my 0.0025% accuracy goal.
So it's not like getting one of these Metrix bench meters would be seen as a replacement / alternative to a fancy HP one. Price wise there is a huge gap, so it does not have to be either this or that... it can be this AND that, each serving a different purpose.  There is the space issue to be considered... multiple of everything in general, is not viable as everything needs to fit on the shelves. However be it this Metrix meter, or the HP VFD ones, are half width compact pieces, so having one of each is not a big deal, it's doable.

So...yeah, I feel I might get a Metrix bench meter one day.... just because I like the looks of these MX 554 and their cool display....

...but the one you found is too expensive at 130 Euros. MX 554 being a MX 54 at heart, you can't possibly justify spending MX 56 money for it !

This one that popped up just 4 days ago, looks better to me, at 100 Euros :

https://www.leboncoin.fr/outillage_materiaux_2nd_oeuvre/2100574207.htm

Might contact the seller see if he would take an offer for 85 or 90 Euros...




Well it didn't take long did it !

Seller already got back to me, he accepted my offer for 85 Euros instead of 100 !
85 is a very good price for these, happy happy !

Excited, can't wait to receive it... :D
 
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Offline mansaxel

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #111372 on: January 16, 2022, 06:39:33 pm »
In other news, there was a dead short across one of the voltage rails in my 465B. And it disappeared as soon as I'd removed the charred tant remains.

Nobody's surprised, right?

I've bodged in a Würth low-ESR electrolyte that I'd bought for my 5440 scope (to fix a similar problem) but I need to check that all the small Dunlop connectors went on in the right direction before I try powering up again.

Offline Ice-Tea

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #111373 on: January 16, 2022, 06:42:53 pm »
Just a heads up: I replaced the linefilter on the Solartron 7055. Boots up fine, but was about half a percent off in measurements. Got to work on the compensation for the reference (in attachment) but that doesn't react as I expected it to (linking both G & H puts it in a boot loop, most other links simply do nothing at all,...).

All in all, I went as far as (and a bit further) as "economic repair" allows. So, I'll  send it off for auction on eBay. Unless one of you lot wants to have a go? Either as a purchase or just as a free "project" to be returned if/when you figure it out.

Shoot me a PM if you're interested. If not: expect your eBay search filters to be triggered  8)

Did you check the links are correct for the voltage the reference is outputting? If they are, then it's not the reference that needs adjusting, but the front end. I'd be more inclined to suspect drift/damage there anyway...

Well, the odd thing was that both A and B links were made, which doesn't make sense. I'm not claiming I set all the links exactly as they should but, well, adjusting up or down should have an effect. It doesn't. Whatever the 'right' values are, I should be able to set both H and G together but it gets stuck in the "hello" loop.

You may well be right the problem lies elsewhere, but as I said: the "economic repair" ship has sailed and I need to board "HMS let's see how much can I recover in an  auction" or "SS let's hand it over the Asylum".

Ah, I suspect you have been looking at the wrong table... I think you've used the 7065 table; the 7055 table is further down and very different (page 4.5.52 on the pdf). H and G should never be used together on the 7055, but may be on the 7065. A and B should never be used together on the 7065, but may be on the 7055.

Looking again at the pic you linked of the reference, that's from the 7065. I'll link the 7055 reference at the end of this post.


Ack! Conundrum! Open her back up or let the auction run its course  :scared:

EDIT: looked at the schematic. So, yeah.  |O

Guess what  ;) Thanks AVG!

 
The following users thanked this post: ch_scr, mansaxel, cyclin_al, AVGresponding

Offline Andrew_Debbie

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #111374 on: January 16, 2022, 06:45:30 pm »


I've also bought some Soviet 74188 clones to try & fix the second 5340A control board (according to the manual there are four in total, two of which are on the control board), still waiting for them to arrive.
Earlier this week I got the rare opportunity to work in the lab for a day, while I was there I had a read of the manual for the Expro 60/80 programmer & it will read/write the 74188, but knowing my luck the ancient PC that it is part of, will be dead/emit smoke/or HDD corrupted by now.  :-//

David

I'm going to use National Semi DM8577s.  I found a few NOS parts.    They are read compatible with the '188 but do not program the same way. 

I have no idea about programming the Soviet clones.  Presumably they program like the TI 74188??

If my device works (that is a bigif)  I will have a couple of partly populated PCBs  available at cost.  (about $20 + shipping)    There are still some DM8577s on eBay. . .

 


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