Author Topic: List your test equipment "scores" here!  (Read 459229 times)

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Offline Tony_G

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Re: List your test equipment "scores" here!
« Reply #2100 on: August 06, 2018, 12:07:26 pm »
Out of Seattle so my guess was it was from Boeing - and sure enough there's the Boeing sticker on the top.  The seller claimed it was taken from a working system.  Uh huh - I can't think of a single reason, in 2018, for a GPIB bus analyser being in a production line system (which is the implication I read into 'taken from a working system').

Taken from a working system my arse. I hate that BS phrase with a passion....

I bought one a while ago, still waiting to clear bench space to do a video of it. Fortunately I have some similar generation gear so I can run it through its paces if mine also works. Looking forward to your repair log/video.

TonyG

Offline bitseeker

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Re: List your test equipment "scores" here!
« Reply #2101 on: August 06, 2018, 03:25:11 pm »
The seller just didn't say when it was taken from that working system. ::) :-DD
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Offline Berni

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Re: List your test equipment "scores" here!
« Reply #2102 on: August 06, 2018, 03:41:35 pm »
I had bought a big Fluke precision 10kV PSU before that was listed as fully working.

Its pretty old so it has a permanently attached power cord. Just to be sure i tested the plug for any shorts and that i can see the transformer resistance looks normal. However i couldn't get any resistance reading to anything, even to the case. That is until i grabbed the crocodile clip and wiggled it around enough for it to dig trough the oxide layer. The PSU seamed to belong to a school and it has been sitting so long that the power cord is so oxidized it doesn't even make contact, upon closer inspection the prongs on the plug had a consistent layer of oxide all around without any mating contact marks, so the seller has not even tried to plug it in in likely the last 10 to 40 years.

Oh and there is also the fact that the fuse was missing and the case cover interlock switch had oxidized too so it needed to be clicked a few times to clean its contacts.

Yeah it was working... maybe 40 years ago.
 

Online Ice-Tea

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Re: List your test equipment "scores" here!
« Reply #2103 on: August 09, 2018, 06:41:42 am »
Three HP8648C's.

1) Works, but outputs 3-4dB too much. Calibration?  :-// In addition, the screen is odd. From below it is unreadable, from above it is perfect. Not sure what's up with that, maybe aftermarket jobbie
2) No go. Swapped the PSU with another unit. Boots now, good display. But ain't nothing coming out of the damn thing. Even though it thinks it does. And some stuff gets *hot*. As in "that blob of rubber used to be a standof".
3) A few errors, seems linked to a dead backup bat. Unfortunately, my ATTEN crapped out on my today, so no soldering for me.

Three HP66332A's

Booted up the first two: no go. Both had bad fuses.

...

...

I then figured out these weren't auto-ranging. No selector switch either (I checked - at least I'm that smart). Just hardwired 110V units. Which I could have figured out if I had botherd to check the option code (yeah, no print or label or whatever). So, that's two that went up in smoke. I'll rewire the third one later.

Not the best day I ever had.
eBay shop with all the gear you need!
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Offline PTR_1275

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Re: List your test equipment "scores" here!
« Reply #2104 on: August 09, 2018, 08:59:26 am »
If you want to part out those 2 66332a, let me know. I’ve got a few here needing parts to get them up and running. Front pcba (well mostly the display but it’s a pain to get out of the board) and possibly 1 control board if it didn’t fry.
 

Offline Berni

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Re: List your test equipment "scores" here!
« Reply #2105 on: August 09, 2018, 03:23:14 pm »
Now that is quite the bad luck, but im sure you can get the parts for at least 1 working one out of all 3.

I recently had quite a scare with a 110V situation. A bunch of gear came into the lab recently and i made sure to switch it all to 230V when going trough it and testing it, most of it worked, some of it mostly worked. But then there is the WaveCrest digital time system that has no selector switch and has a 110V sticker on the back. Weeks later when i got to do proper performance testing of it i forgot about it and just thought to my self "I switched it all to 230V anyway". So i plug it in and it turns on as usual and starts booting but then turns off after just a second or two. Also i thought i have heard a transformer hum when plugging it in that i don't recall hearing the first time around. I start checking for power and then see the 110V sticker on the back.... oh fuck i put 230 in it.

What seams to be half a million screws later i finally was in and half of the case was a pile of off the shelf PSU modules, some switching some linear. The switching supplies said they are universal input voltage, but the linear ones had 110V marked on the stickers. The primary wingdings on the transformers still seamed to have a few Ohms so that's a good sign. Applying 110V power this time around nothing happened, but also none of the transformers had power to the primary. Eventualy i found pretty hidden fuse socket in the IEC connector on the back to find 2 separate fuses (One for live one for neutral) that are both blown. Sticking new 5A fuses in got it back to life again. Phew... that sure had me going.
 

Offline capt bullshot

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Re: List your test equipment "scores" here!
« Reply #2106 on: August 09, 2018, 03:32:26 pm »
Now that is quite the bad luck, but im sure you can get the parts for at least 1 working one out of all 3.
Powering up 120V TE with 230V may cause quit a lot of wrecking. Once I've got a bunch of five MG3633A, all of them set to 120V, one tried out by the seller using 230V, resulting in blown fuses. Total damage was a bit more than a blown fuse:
http://wunderkis.de/mg3633a/repair3.html
« Last Edit: August 09, 2018, 04:34:54 pm by capt bullshot »
Safety devices hinder evolution
 

Online Ice-Tea

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Re: List your test equipment "scores" here!
« Reply #2107 on: August 09, 2018, 04:25:23 pm »
If you want to part out those 2 66332a, let me know. I’ve got a few here needing parts to get them up and running. Front pcba (well mostly the display but it’s a pain to get out of the board) and possibly 1 control board if it didn’t fry.

Well, I actually sold one before I received the units. So, when I confessed I couldn't deliver the customer asked if he could have the dead units. As they are not worth enough to me to attempt repair I let him have both for a song. Seemed like  a good way to make up ;)
eBay shop with all the gear you need!
FS: Agilent 54815A, 54825A, R&S CMU200, CRTU, SFU, SMIQ06L, SFU, HP8714B, 8595E, Marconi 6201B, Lecroy WP 960,950, 9354TM, THS720P, Anritsu MG3671A 2.75G I/Q RF gen, MS8604A 8.5GHz SA, Keithley 238 SMU
 

Online Ice-Tea

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Re: List your test equipment "scores" here!
« Reply #2108 on: August 11, 2018, 04:28:39 am »
Re. the odd screen: there's a contrast knob on the back. Fixed.  :-DD :palm:
eBay shop with all the gear you need!
FS: Agilent 54815A, 54825A, R&S CMU200, CRTU, SFU, SMIQ06L, SFU, HP8714B, 8595E, Marconi 6201B, Lecroy WP 960,950, 9354TM, THS720P, Anritsu MG3671A 2.75G I/Q RF gen, MS8604A 8.5GHz SA, Keithley 238 SMU
 

Offline ArthurDent

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Re: List your test equipment "scores" here!
« Reply #2109 on: August 11, 2018, 09:39:25 am »
Yesterday I bought a lot of instruments from Craigslist that were all guaranteed to have some problems. From what I’ve seen so far, that is correct, but some look like they are easier to repair than others.

A Dynaload electronic load had a meter that worked but showed a dead short across the terminals. Lubricant on a couple of switches had stiffened up and relubricating them solved that problem. The short was caused by 2 of the five paralleled 2N3055 load transistors being shorted.  It works for testing with 3 and replacements are on the way.

An HP 6032A 60V/50A 1000W system power supply has a broken switch and an electrolytic cap that blew but didn’t destroy anything else. Also a second 8V/20A HP 6541A system power supply that doesn’t look too bad.

One Fluke 887 differential meter that looks pretty good but needs batteries, five HP3478A meters that need batteries and calibration, Wavetek 164 and HP3314A function generators, and an HP 8657A synthesized 1Ghz signal generator,  and a couple of other items.

The seller was moving and just wanted to clear this stuff out quickly at $20 for each item. Repairs on this pile will keep me busy for a while.

 

Offline bitseeker

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Re: List your test equipment "scores" here!
« Reply #2110 on: August 11, 2018, 11:09:20 am »
Wow, $20 a piece is great. :-+
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Offline Cubdriver

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Re: List your test equipment "scores" here!
« Reply #2111 on: August 11, 2018, 04:58:28 pm »
Damn, you made out like a bandit!  Congrats, and post pics!

-Pat
If it jams, force it.  If it breaks, you needed a new one anyway...
 

Offline Berni

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Re: List your test equipment "scores" here!
« Reply #2112 on: August 11, 2018, 05:10:59 pm »
Dang now thats a score!
 

Offline Andrewausfa

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Re: List your test equipment "scores" here!
« Reply #2113 on: August 11, 2018, 08:59:28 pm »
I'm guessing you've seen most of the gear I got in action already, so I won't bother you with it but this Marconi gear is pretty neat. I proudly present the Marconi 2383 4.2GHz SA!

Notable facts:
- Proudly made in the UK.
- Old. Anyone any clue?
- Calibrated untill 2017 (I kid you not). With a waiver because it missed the targt by 0.04dB  ::)
- Tracking gen(shown active in the pictureover the full span. Kinda wonder where the dip comes from. Seems to shift frequencies too  :o)
- Heavy. Like a boat anchor. For the Titanic.
- None of this funny "menu" stuff. Everything has dedicated keys. Except for a few "shift" functions. But I imagine that once you get the hang of this thing you'd be twice as fast as on one of those newfangled menu pieces of gear.
- 100Hz (!) to 4.2GHz
- RBW 3Hz

Announced in 1987
 

Offline wolfy007

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Re: List your test equipment "scores" here!
« Reply #2114 on: August 11, 2018, 11:35:17 pm »
Scored an Owon SDS8102 for AU$90, reported as 'turns on once if turned off need to wait to turn on again'. Turns out the PSU had issues, all repaired now and working fine.

PS: updated firmware, seems to work nice enough, I think its a score...

PPS: Also scored a 7L12 for my Tek 7603, FREE, this was a happy day!
« Last Edit: August 11, 2018, 11:54:42 pm by wolfy007 »
Tek: 222A, 212, TAS465, TDS460A, 2465, 2465B, 2467, TM504, TM506, SG504, SG503, PG506, TG501, SC504, PS503a, FG501a, DM504a, PG501, 7603+7L12
BWD: 835, 539d, 521, 504, 141, 160a  Fluke: 8060A, 8024B, 8025A, 27/FM, 87, 87III   HP: 5315A, 3478a, 3468A, 3457a  Keithley: 196, 228a  Solartron: 7081 7151
 

Offline bitseeker

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Re: List your test equipment "scores" here!
« Reply #2115 on: August 12, 2018, 04:21:36 am »
Yep, sounds like an SMPS. Nicely done.
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Offline targit

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Re: List your test equipment "scores" here!
« Reply #2116 on: August 31, 2018, 11:19:44 pm »
I just bought a new U1282A for AUD$405 delivered (from eBay Singapore), the guy says he has a couple more to sell. It was a late night purchase and I may have had a few refreshments at the time, have to wait and see what arrives..

Update, it arrived well packaged and is indeed a brand new meter and works exactly as advertised. He has now raised the price to $670 though.. :D
« Last Edit: September 15, 2018, 07:35:48 pm by targit »
 

Online Ice-Tea

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Re: List your test equipment "scores" here!
« Reply #2117 on: September 04, 2018, 07:16:55 pm »
eBay shop with all the gear you need!
FS: Agilent 54815A, 54825A, R&S CMU200, CRTU, SFU, SMIQ06L, SFU, HP8714B, 8595E, Marconi 6201B, Lecroy WP 960,950, 9354TM, THS720P, Anritsu MG3671A 2.75G I/Q RF gen, MS8604A 8.5GHz SA, Keithley 238 SMU
 

Offline Berni

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Re: List your test equipment "scores" here!
« Reply #2118 on: September 04, 2018, 07:28:52 pm »
Quite the haul.

That HP Synthesizer down there looks rather interesting.
 

Online Ice-Tea

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Re: List your test equipment "scores" here!
« Reply #2119 on: September 04, 2018, 09:12:22 pm »
That HP Synthesizer down there looks rather interesting.

If you look closely you'll find it's two, actually ;)
eBay shop with all the gear you need!
FS: Agilent 54815A, 54825A, R&S CMU200, CRTU, SFU, SMIQ06L, SFU, HP8714B, 8595E, Marconi 6201B, Lecroy WP 960,950, 9354TM, THS720P, Anritsu MG3671A 2.75G I/Q RF gen, MS8604A 8.5GHz SA, Keithley 238 SMU
 

Offline Cubdriver

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Re: List your test equipment "scores" here!
« Reply #2120 on: September 05, 2018, 01:30:22 am »
Nice!!   :-+ :-+

-Pat
If it jams, force it.  If it breaks, you needed a new one anyway...
 

Offline Tony_G

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Re: List your test equipment "scores" here!
« Reply #2121 on: September 05, 2018, 02:26:20 am »
Those 866x's weigh a ton. I have one that FedEx dropped and the whole 10MHz reference section broke free. They're great sig gens though.

TonyG

Offline Berni

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Re: List your test equipment "scores" here!
« Reply #2122 on: September 05, 2018, 02:36:45 am »
That HP Synthesizer down there looks rather interesting.

If you look closely you'll find it's two, actually ;)

Oh i see now. You lucky bastard.
 

Online Ice-Tea

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Re: List your test equipment "scores" here!
« Reply #2123 on: September 05, 2018, 03:28:15 am »
Oh i see now. You lucky bastard.

Eh, well, if you're interested drop me a line ;)

And yes, they are heavy. Tend to have a "2 man carry" sticker or some such.
eBay shop with all the gear you need!
FS: Agilent 54815A, 54825A, R&S CMU200, CRTU, SFU, SMIQ06L, SFU, HP8714B, 8595E, Marconi 6201B, Lecroy WP 960,950, 9354TM, THS720P, Anritsu MG3671A 2.75G I/Q RF gen, MS8604A 8.5GHz SA, Keithley 238 SMU
 

Offline Berni

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Re: List your test equipment "scores" here!
« Reply #2124 on: September 05, 2018, 03:59:37 am »

Eh, well, if you're interested drop me a line ;)

And yes, they are heavy. Tend to have a "2 man carry" sticker or some such.

Being a high performance piece of RF test gear from the 80s i would certainly believe it has quite a bit of gravity to it. At first i have mistaken it from the photos of being an even higher spec model, but after some more looking i now see that its probably a HP 8663A.

I could certainly be interested in one, but i would imagine the price of it being more of an issue.
 


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