Test Equipment Anonymous (TEA) group therapy thread

[med6753]

External calibration done. Back in the case. All functions now work properly. Mandatory burn in for at least 6 hours. 

[0culus]

Looking good! One thing I wonder is why the timebase control is the same knob as the vertical? Seems like having the larger knob like the analog scopes in that series is easier to use without looking.

[med6753]

Probably because it's not marked in sec, ms, us, ns like an analog scope. It's all on the display menu. And if you look at all modern DSO's they are the same way.

[0culus]

Hmm. That's true, I think, for the 24xxA analog models, but the B models to my knowledge just say "fast" and "slow", with the actual readout on the CRT.

[bd139]

Holy crap there are some dumbasses out there. Check the end price of this load of shit: https://www.ebay.co.uk/itm/123662056108

Plessey are known to sell the WORST electrolytic capacitors in existence.

[Neomys Sapiens]

I got my handbook for the HP6824A 4Q-PS from Telford. With complete circuit diagrams in full size - folded according to DIN/ISO so that they neatly vanish into the spiral-bound A4 manual.
I will scan it and make it available - but don't expect me to do anything elaborate. I'll have to do consecutive a4-size scans and maybe add full-size ones later.
And hopefully it will result in a resurrected power supply.

[0culus]

Holy crap there are some dumbasses out there. Check the end price of this load of shit: https://www.ebay.co.uk/itm/123662056108

Plessey are known to sell the WORST electrolytic capacitors in existence.

On the bright side (heh) maybe someone is planning to blow them up, ElectroBoom style. 

[Neomys Sapiens]

Holy crap there are some dumbasses out there. Check the end price of this load of shit: https://www.ebay.co.uk/itm/123662056108

Plessey are known to sell the WORST electrolytic capacitors in existence.

On the bright side (heh) maybe someone is planning to blow them up, ElectroBoom style. 

It is spring and the birds are becoming noisy.

[mnementh]

Selling as unused old stock (one of the Orange ones is used).

They have not been tested.

Holy crap there are some dumbasses out there. Check the end price of this load of shit: https://www.ebay.co.uk/itm/123662056108

Plessey are known to sell the WORST electrolytic capacitors in existence.

    *thinks back on the gallons and gallons of NOS electrolytics he chunked a few months ago because they were all 10-20 years old*   

If only I could make myself be that much of a douche...

   External calibration done. Back in the case. All functions now work properly. Mandatory burn in for at least 6 hours. 

Awesome. Now it needs a 2230 to keep it company. 

mnem
*Up to my elbows in Component Video cables*

[med6753]

   External calibration done. Back in the case. All functions now work properly. Mandatory burn in for at least 6 hours. 

Awesome. Now it needs a 2230 to keep it company. 

mnem
*Up to my elbows in Component Video cables*

I have so many projects both TEA and non-TEA related that I don't need another one. 

[mnementh]

Selling as unused old stock (one of the Orange ones is used).

They have not been tested.

Holy crap there are some dumbasses out there. Check the end price of this load of shit: https://www.ebay.co.uk/itm/123662056108

Plessey are known to sell the WORST electrolytic capacitors in existence.

    *thinks back on the gallons and gallons of NOS electrolytics he chunked a few months ago because they were all at least 10, probably closer to 20 years old*   

If only I could make myself be that much of a douche...

   External calibration done. Back in the case. All functions now work properly. Mandatory burn in for at least 6 hours. 

Awesome. Now it needs a 2230 to keep it company. 

mnem
*Up to my elbows in Component Video cables*

[bd139]

    *thinks back on the gallons and gallons of NOS electrolytics he chunked a few months ago because they were all 10-20 years old*   

If only I could make myself be that much of a douche...

Yep I just threw out about 50 of the damn things after ESR testing them and they were duff even though NOS and the bin was collected today 

[Specmaster]

    *thinks back on the gallons and gallons of NOS electrolytics he chunked a few months ago because they were all 10-20 years old*   

If only I could make myself be that much of a douche...

Yep I just threw out about 50 of the damn things after ESR testing them and they were duff even though NOS and the bin was collected today 

There you go, the ESR meter is already earning its corn, could also use it for checking equipment pulls before reassigning them into some new scratch build project next time. [emoji106][emoji106]

[VK5RC]

Time-nuttery alert!
Re the 53310, modulation / phase analzer, have you guys seen the TAPR project the time interval counter TICC, does continuous time stamping measurement, in the few 10s of pS, for USD $205. About 1/30 of keysight 's 53230A!
https://www.tapr.org/kits_ticc.html
Rob

You tease! (out of stock )

Sorry about that - looks like they are going to do another run though.
Rob

[tautech]

    *thinks back on the gallons and gallons of NOS electrolytics he chunked a few months ago because they were all 10-20 years old*   

If only I could make myself be that much of a douche...

Yep I just threw out about 50 of the damn things after ESR testing them and they were duff even though NOS and the bin was collected today 

And you didn't reform them before testing them ? 

[mnementh]

My experiences with attempting to recover electrolytic caps using a battery desulfator or similar devices have been pretty much craptacular. Never had one keep it's "rejuvenated" condition for anything I'd consider an appreciable time, and never had them recover to the point of having the proper ESR; only marginally acceptable at best. I have little doubt the Q/tan Δ factors that I can now measure would be similarly unsatisfactory.

Maybe I expect too much. 

mnem
"Capacitors are Murphy's footsoldiers; take no prisoners." ~me

[mnementh]

   External calibration done. Back in the case. All functions now work properly. Mandatory burn in for at least 6 hours. 

Awesome. Now it needs a 2230 to keep it company. 

mnem
*Up to my elbows in Component Video cables*

I have so many projects both TEA and non-TEA related that I don't need another one. 

Who are you, and when will the aliens return the med we all know and love to torment?!?

mnem
https://youtu.be/mm6oYqBwNAg

[bitseeker]

   External calibration done. Back in the case. All functions now work properly. Mandatory burn in for at least 6 hours. 

Awesome. Now it needs a 2230 to keep it company. 

I have so many projects both TEA and non-TEA related that I don't need another one. 

I keep saying that to myself, but then you post that like-new result with the 2430, bd posts the reminder that the 453 is all discrete, and mnem re-tempts with his mostly working 454.

[bitseeker]

My experiences with attempting to recover electrolytic caps using a battery desulfator or similar devices have been pretty much craptacular. Never had one keep it's "rejuvenated" condition for anything I'd consider an appreciable time, and never had them recover to the point of having the proper ESR; only marginally acceptable at best. I have little doubt the Q/tan Δ factors that I can now measure would be similarly unsatisfactory.

Maybe I expect too much. 

I've never messed with reforming old caps. If they've lived their life, I'm OK with replacing them. The prices of axial caps is rather annoying, though, and I'm not a fan of the limbo-dancing radial substitutions. Oh, well.

[grizewald]

Yep. I think we've all got a ton of the things though (I've got a box full of tek shafts and knobs)

Don't the knobs fall apart when you look at them?

That's why I got rid of my TDS210 and replaced it with a Rigol DS1054Z. Suddenly, the knobs on the 210 began falling apart when I went to change a setting. After having the fourth one disintegrate on me, I knew it was time for an upgrade.

[Specmaster]

   External calibration done. Back in the case. All functions now work properly. Mandatory burn in for at least 6 hours. 

Awesome. Now it needs a 2230 to keep it company. 

I have so many projects both TEA and non-TEA related that I don't need another one. 

I keep saying that to myself, but then you post that like-new result with the 2430, bd posts the reminder that the 453 is all discrete, and mnem re-tempts with his mostly working 454.

Even I'm looking at a 2465A that finishes in 2 days [emoji848]

[Specmaster]

Yep. I think we've all got a ton of the things though (I've got a box full of tek shafts and knobs)

Don't the knobs fall apart when you look at them?

That's why I got rid of my TDS210 and replaced it with a Rigol DS1054Z. Suddenly, the knobs on the 210 began falling apart when I went to change a setting. After having the fourth one disintegrate on me, I knew it was time for an upgrade.

That's a bit extreme to fix broken knobs, I had some 3D printed[emoji106]

[tggzzz]

My experiences with attempting to recover electrolytic caps using a battery desulfator or similar devices have been pretty much craptacular. Never had one keep it's "rejuvenated" condition for anything I'd consider an appreciable time, and never had them recover to the point of having the proper ESR; only marginally acceptable at best. I have little doubt the Q/tan Δ factors that I can now measure would be similarly unsatisfactory.

I did

A cap in the SMPS startup circuit of my 485 held its rejuvenated condition for several hours. Meant I could only do two or three tests per day. Bugger to find, that was.

[tggzzz]

Even I'm looking at a 2465A that finishes in 2 days [emoji848]

How much would you pay for a recapped 2465 (not A) that passes all self tests?

We could meet at Kempton on Sunday, even though I'm not selling

[bd139]

There you go, the ESR meter is already earning its corn, could also use it for checking equipment pulls before reassigning them into some new scratch build project next time. [emoji106][emoji106]

Yep exactly. That was one of the motivations of building it. That and repairing things mostly.

My experiences with attempting to recover electrolytic caps using a battery desulfator or similar devices have been pretty much craptacular. Never had one keep it's "rejuvenated" condition for anything I'd consider an appreciable time, and never had them recover to the point of having the proper ESR; only marginally acceptable at best. I have little doubt the Q/tan Δ factors that I can now measure would be similarly unsatisfactory.

Maybe I expect too much. 

I tried to reform caps in the distant past. I'd use the contents of an old television (transformer, rectifier, dropper bar) and my old micronta POS. On at least two occasions I got what looked like a successful reformation but they got super hot in situ with some ripple current through them. I decided just to put the min my junk box and at an appropriate time, attach my suicide cord to them and let them off in the garden in the end. An ancient LCR one blew a 4 inch hole in my nan's fence and I got chased around the garden with a broom. She was 75 at the time and not particularly quick fortunately