Analog oscilloscope repair 4 - Finally working! 

The cat is the brains of the operation.

Wow, you are building up an army of test equipment by resurrecting dead or faulty units. The pluses - stopping items going to landfill and gaining equipment at almost no cost. The power of knowledge. 🐱

Nice one, can't wait for the next oscilloscope (BM556A) video.

I am actually working on two broken oscilloscopes myself here, one tube based and one transistor, I Think I am able to fix them too. and your video inspires me to push on

thank you for your nice videos. i learned a lot from you. pls be careful. the liquid leaking from the old Tesla filter (and other old paper capacitors) contains Polychlorinated biphenyls (PCBs).

Hey, that's a cool filter identification device :). Nice restoration job. Other than those sewper dodgyyyyyyyyy capacitors, I love how this scope is built. I had this moment of astonishment when working on our local hackerspace's Unitra Unima OS-352 scope made in the '80s, it was also very clean and neat inside.

Hi, thanks for the video Diode!

You have a very knowledgeable cat !

To get his hands on these rare stuff is wild. I used to collect old nokia phone. i mean yeah old things is outdated, but in build quality, they are Superior than nowdays stuff. Way better and easy to fix. Nowdays stuff is like one time use, broken = E-waste.

Each series has its own characteristic ESR, the higher the ripple current, the lower the ESR. High quality, high price.

Another "wild" one. Nice.😉👍

Danke! Thanks! Just repeating previous comments: Nice job. Complex and complicated.. But a part of real world, fixing one problem to find the next or a new failure xd. Love this old machines! Try to fix modern smd million pins soldered ųc... noo wayy.. Extra ThankYou for deep and quality content!

"A massive bucket of salt" I'm dying 😭

Oooh... that table printed on your ESR meter is exactly what I've been looking for... :)

I was wondering when you were going to finish that off. That other scope looks like a beast.

Great! Looking forward for the other scope!

Thank you very much!

1:44 WTF capacitor (The Orange close to the tesla IC) LOL

Grandpa ! The channel you subscribed finally updated ！🤣 Nice video as always !

Nice job.

Believe it or not, but the filter was actually installed the right way around! You're still right to suspect they'd install it any whichever way the wind turned it that day, though. And indeed, since many of these have capacitors on both sides, it matters very little. The capacitors from L/N to PE should be on the "output" side, as that is where the interference can be generated. If the capacitors between L/N and PE were on the input side, interference from the device would have to flow through the inductor which will not behave the same for all frequencies. Having the capacitors between L/N and PE on the output side provides the easiest path to ground for those types of interference. Furthermore, since this is a common mode interference filter (choke), interference on one terminal only (either L or N) wouldn't be treated the same! The filter will arguably behave better or more as expected the way it's fitted with the capacitors between L/N and PE on the output side, as it doesn't impact power factor as much due to not being directly connected to the mains. Net result for the oscilloscope, though, is the same. For the oscilloscope, it doesn't matter.

Nice !.....cheers.

Cool...

At first I thought NN was for Not (k)Nown 😂

So complex!

Na toto video o dokončení opravy tohto osciloskopu som sa veľmi tešil, vedel som že bude ešte dokončenie opravy časovej základne, takže gratulujem k dokončeniu opravy tohto osciloskopu, teraz ti bude dlho verne slúžiť 😀. Na video (možno videá) o oprave BM566A sa budem samozrejme tiež tešiť.

10:04 The filter I salvaged from a plasma TV has those components but also another capacitor on the other side of the coils. I wonder what it's for

Jewel

Hello Sir ive seen your using the same amp meter from Voltcraft im having. Have you done a teardown of it ? Im asking because mine is broken, it shows an errow and the warranty is gone. So i was hoping you could give me some tips fixing it thx 😉

It's a Beamer! 😂

Typically, the inductor should be on the mains side.

Ten osciloskop BM566A jsem dostal od kolegy na radioklubu a pořád nemůžu pochytit jak s tím správně zacházet, mohl bys prosím ve videu o něm říct něco málo o tom jak s ním pracovat? Díky.

Umm, I'd like to see you use a fork as a pointer...

Thus old Ceck electrolitics are better than moderm chinesium ones. zakazane chinesium

🐈🐈

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