My initial thought on the other signal wire was that it might be a thermistor in the transformer to detect overheating during heavy use.

@PhilipLeitch

Жыл бұрын

Oh, of course my favourite KZreadrs watch eachothers content 🙄

@owenhrabanek9561

Жыл бұрын

I'm glad that Big Clive is a Post Apocalyptic Inventor watcher

@jackmclane1826

Жыл бұрын

Spot welders are usually only on for fractions of seconds. Hard to get them to overheat...

@kyledavidson8712

Жыл бұрын

​@@jackmclane1826fractions of seconds over thousands of hours of continuous duty add up don't they

@StefanoBettega

Жыл бұрын

It make sense, but when Gerolf said the box can stop the current after some time, I thought it would be a sort of current sensing, like he spotted.

Today I learned that 3mm TIG rod is just a naked 200A slow-blow fuse 😅 But seriously thank you for all the pulling wrenches and moreso for the wisdom you share.

@Hellsong89

Жыл бұрын

So Russians with their nail as a fuse were not that far off after all XD

Watching the magnetic flux from that big transformer move those huge wires on the secondary side is awesome

I am always happy to hear TPAI's philosophizing in the first few minutes of each video. It always seems to resonate with me.

You made my day man. Plus, today is a public holiday. Estonian victory day marks the victory of Estonia and neighboring Latvia in the Battle of Cēsis against the Baltische Landeswehr on June 23, 1919. God bless you.

@Minecraftzocker135

Жыл бұрын

And the red army ?

@estventor

Жыл бұрын

@@Minecraftzocker135 Estonians fought with red army too peace treaty was finally concluded with the red army on 31 December 1919, and the ceasefire came into effect on 3 January 1920.

Nice to see some good old school Irish music in the cabinet

getting some mad photonicinduction vibes from this!

"Victory of the vapid and mundane" - A spot on observation and summarized very well.

Quality old Hi-Fi equipment holds up really well!

When you go to a "junk yard", I call it the opportunity yard. Think of all the things that can be made with all of this material. I'm kind'a like you. Growing up, I didn't have a lot of money to buy new stuff. So getting used stuff was the way do go. Getting used equipment and transforming it into something that I can use is the challenge. Good job by you in all of your projects. Just remember what Ben Franklin said, "Necessity is the mother of invention".

I agree with you completely on your intro. I really enjoy turning other people's junk into something useful and repairing throw-away appliances. Not too many like you or me out there. I watch all your videos, maybe not the day they come out but will catch up on a "rainy" day or on a day I just need some rest. Thanks for what you do,

Witnessing defeat of the vapid and mundane. Well done Gerolf!

I find your videos more entertaining than most television programs these days, keep them coming, always things of interest and a good picture of how much waste we humans produce, so much stuff thrown away that still preforms works with a minimum of repair and effort so much unnecessary waste it is sad really and what could be cooler than a spot welder[built by] named after Doctor Who's arch enemy lmao "Dalex" very cool old stereo i still have the first turntable i bought in 1981/82 a Pioneer pl 200 still works perfectly

@Reaktanzkreis

Жыл бұрын

The brand name Dalex is older the the Doctor Who´s enemy Daleks. The dalex company produce high quality welding gear since 1945. But it sounds funny. I like the Doctor Who television series.

Here's a tip if your clamp meter doesn't go high enough connect 2 wires in parallel to one of the outputs, measure one of them, then double the reading ;) To measure a low resistance, connect that resistance in series with a known resistance, apply a voltage, measure the voltage drop across the low resistance, then use ohms law

@vbinsider

Жыл бұрын

At currents that high the two wires in parallel need to be as equal in length as possible. Pretty difficult to accomplish to do that. Even a slight imbalance will greatly influence how the two currents are distributed among the wires.

@sparkyprojects

Жыл бұрын

@@vbinsider That's a given, like both wires being the same size If the result is critical, you could measure both wires individually and take the average

@zeddpilsner4

Жыл бұрын

@@sparkyprojects Are you sure you mean you would measure the both of them and then take the average? I feel like the answer would be to measure both of them and then add them together and that would be your total current for the circuit

@sparkyprojects

Жыл бұрын

@@zeddpilsner4 Measure each, take the average and double for the total.

@Loreroth

Жыл бұрын

(x+y)/2*2=x+y

Man, you must have one hell of an electric bill.

Hello from Detroit Michigan brother thank you for sharing your knowledge and expertise and for taking us on your adventure through the scrap yard

@ThePostApocalypticInventor

Жыл бұрын

Nice to have you on board! sending my best regards back to Michigan!

@miahsbrokengarage

Жыл бұрын

Hello from Muskegon, MI friend!

@jasondk5127

Жыл бұрын

Hello here from Berkley Michigan! 😊

@detroitredneckdetroitredne6674

Жыл бұрын

@@miahsbrokengarage 275/94

That stereo was a true diamond in the rough. Thanks again for another top quality presentation!

2:37 For a second, I thought that was a Dalek, and you had narrowly avoided being EXTERMINATED! rofl!

Totally unexpected…your demo record, the Clancy Brothers and Tommy makes traditional Irish music. Liked this video very much. Less complex repairs and electronics still valuable to many of us.

Always a pleasure to watch your videos. I liked seeing the dual record player. I used to have it as a kid (probably still exists, and stored somewhere at my parents place). The center pin used to be replaceable by a very ingenious longer pin, with a bunch of moving parts on the shaft. You had to press it down in the center and twist it, to lock it in place. You could then stack multiple records onto the center pin, and they would be played automatically one after the other (the movable parts on the shaft would click away, allowing for 1 record to be lowered onto the turntable. It was a real piece of technical ingenuity back in those days. It was fun to be reminded...

@dougerrohmer

Жыл бұрын

Yeah, I remember the center pin thingy. It never seemed like a good idea, because the first record remains and the next clatters down on it. maybe scratching it? There is also a bit of slippage and the second record is slower. If you have several records, the last one has quiet a bit of accumulated slippage, and really starts groaning. Maybe high quality systems overcame this - ours wasn't even stereo...

@toomanyinterests

Жыл бұрын

@@dougerrohmer LPs and 45s shouldn't scratch as the label is thicker than the rest of the record, so the grooved areas don't touch. To stop the lightweight 45s from slipping, especially with heavier tracking crystal cartridge pickups, some 45s have a toothed pattern around the label that locks the records together.

@dougerrohmer

Жыл бұрын

@@toomanyinterests Interesting, thanks.

@toomanyinterests

Жыл бұрын

@@dougerrohmer You're welcome

For everyone that likes the Apocalyptic Inventor, please support as well. For the Inventor, thank you for your wonderful content!

More audio equipment restorations, please!!! Excellent content, Gerolf!!!

10 years... I remember when I was watching your videos like 7 years ago on my old account. I think a year ago I found ur video and the intro reminded me of your old videos.

That 60's grundig system is fabulous, a wonderful find.

"We have only two things to worry about - that things will never get back to normal, or that they already have."

I love all your restorations, but I particularly love the old stereo equipment resque missions. Those pieces are so nice!

Yelled, "Greetings," and melted his lug wrench? Weird you want, weird you get.

It's a joy to see this mechanism working again is exactly why I work a job repairing and building things.

The old GRUNDIG Hi-Fi gear is amazing. Both the amp and the tuner are made in 1965 , their predecessors were the SV50 and RT50 . The SV50 were the absolut first transistor stereo amp in the world which become series production. In those days Grundig was a major player in the world with abt.40,000 employees at 7 production plants throughout the world. I remember the days when our local radio dealer got this setup in his shop displaed . it cost a fortune, unobtainable for me. Years later I got the bigger brother of the amp , the SV80 and the RT40 radio tuner from a neighbor who had this componets stated defect and bought himself a new equipment. After a carefully inspection of this service friendly gear, it were only a blown fuse in the amp .New fuse and the setup run like new. I should mention that Grundig use only RCA semiconductors in their products. RCA made high reliable semiconductors in those days.

In the US in the 70s I repaired a lot of Duals, BSR, and Garrard Turntables mainly for old grease or hard rubber tires. The busiest time was just before Christmas.

"The victory of the vapid..." Well said. I would add that there is an abundance of inanity, too.

Whats reality TV?!?!? Love your work. Love scrap yards, old tools and old audio equipment. Very good looking Grundig amp setup and the white was a good choice for that cabinet! I use a Sansui 60's valve amp that i've had for about 20 years.

And he popped it. Photonicinduction laughs at your 1 kilo amp. I have been watching you for years, I have got no complaints about the content. You keep making them and we will keep watching them.

One thing to keep in mind about "fake" things from the that era isn't that they were necessarily trying to be faithful to it looking like an item. Plastics as an industry were booming, so they were marketed as something of a status symbol. Everything from fake wood-grain laminates, to plastics flowers, to dinner- and drink-ware to appliances. One of the appeals of plastics was they were available in virtually any color and could be made in virtually any shape.

Nice! Seeing this I remember when Photonicinduction made a beast of a transformer with a secondary winding done with 400 mm^2 cable)

Nice stereo recovery! and animal sounds too! Thanks!

1:30 ‘The victory of the vapid and the mundane’ How you have the nail on the head sir. If only the young Tik Tok addicts would take a minute to understand that too.

“Grundig was one of the biggest players” nice pun 😊 The plug on your spot welder, was made by Harting. We used many different types of these in the injection mould industry.

Genuinely one of the best channels on KZread, nay the Internet! KZread forced you out of my feed for a time but I'm always coming back to learn more. You have such stores of knowledge and you inspired me to salvage as much as I can and reuse stuff instead of throwing it in the garbage like the majority of people in modern day. I thank you for continuing to publish content for us! ❤

One of the best content creators on the internet you are. Also i was taught at a very young age about high voltage. If you hear the hum you better run

I very much appreciate the historical references such as the town that designed and built Dual turntables had a watchmakers tradition. That’s the kind of tidbit that brings viewers back to your channel. I grew up surrounded by Garrard and Dual turntables and was fascinated by their mechanical “wizardry “ as you put it. I expect you will resell that stereo and I imagine you will sneak a Bluetooth module into it to make it more useful. Maybe not. A good place to find a buyer would be a retro vinyl shop which seems to be a growing market these days at least in the Seattle area. Thanks again.

Happy you were able to rescue the Grundig Hi Fi. Would like to have owned a Dual turntable. In the 70's all I could find at my budget for my projects were the ubiquitous BSR turntables. I appreciate the time taken for this repair -a - thon, and enjoyed the ''restoration'' project the most. Maybe that style would be less demanding and would free up more of your time ? Vielen dank Gerolf.

Had the same radio and amplifier in my living room as a kid, such memories of pressing those round buttons!

Im in the midwestern US and work on a lot of west german and some east german radios sets. Its amazing how far ahead and higher quality that stuff was compared to the us at the time. One thing I would like to warn you about is the crappy ERO capacitors in your radio and amplifier. They like to short and explode.

You didn't destroy a wrench. You modified it for clearance. That stereo system looks fantastic, and I'm not surprised that it "just works." I like the format of segments versus presenting all the finds and then going thru them.

I'm with you. As a kid, I didn't have a lot of money. So, if I wanted something, I'd have to find the materials and build it my self. I love going to a " Scrap". Most of the stuff there isn't really scrap.It's available materials.

That Dalex spot welder really does look like something i could imagine The Daleks using in the 1960s. ;)

Hey, friggin' awesome work on that Dual turntable :). The mechanism is a thing of beauty and a joy for ever. Incandescent bulbs don't really flicker, as the filament has thermal inertia and simply can't react fast enough to flicker at 50Hz. Fluorescent lamps, on the other hand, were a lot more susceptible to this - and that's why you get fixtures of two FLs in industrial settings, one of these lamps is phase-shifted relative to the other by a capacitor in line with the lamp. Otherwise you'd get a stroboscopic effect making rotating parts seem like they're still, leading to workplace accidents.

Totally enjoyed today's video. Back a half century ago I sold high end stereo components. My favorite turntables to sell were Duals. As you quickly determined hardened lubricants are a problem on older equipment. Another issue that often arises with use is worn, or hardened, rubber drive wheels. Back in the day they were not particularly expensive. Don't know about now. Thank you for enhancing my retirement. ;)

That connector on the Dalex spot welder is likely a Han connector made by german company HARTING! They produce very unique modular connectors both in Germany, and in their facility in the United States, often these are used for high voltage machinery that may need to be serviced as an alternative to more permanent and difficult to remove connectors. I worked for HARTING for a short bit and was very impressed with not only their bespoke engineering process for unique connectors, but their absolute german organization and attention to detail. It is no surprise their connector has held up in this application, I hope you'll be able to use more of their connectors in the future!

Very entertaining, especially the hum from those transformers when you crank them up. Thank you for putting this together to save us from doing our own experiments without having your expertise. And you are forgiven for the spanner melting too, as some tools were never any good, so we might as well have some fun.

I restore Dual turntables....millions sold. I primarily restore 1219, 1229, 1019. I love them. Beautiful units. I own a collection of 21 Dual units.

For the chunky transformer, You can use a simple chisel (or a sharper one intended for metal) to cut through the copper. This way, you wont generate dust and scatter the copper everywhere.

Your trips thru the scrap yard are very entetaining. I wish we could do that here in the states, but they are too wooried about liability to allow it.

Thank you for the Dual turntable repair! I have two (dual Duals, you might say) that I hope to repair. I'm sure your information will be super helpful.

Great video 👍So enjoyed your fun comments when testing the transformer's and the light tone of the whole video and insights 😊

Devil was interested in green transformer.

The spot welder and the vintage stereo were great finds.

Absolutely great video! Those were some serious Amps you worked with! I especially loved your restoration of the Dual record player because of personal memories. Thanks Gerold!

Latelly i've fullfilled my dream to be a guy that can repair everything. My gf firmy believe, that i can handle all of the repairs. Thanks pai for inspiration

Dalex doesn't want you to have information too repair there old equipment they want you to buy new equipment from them. They are in business to make money not to help you repair the old equipment! It's the same over here in America. I enjoy watching your channel It's very informative. 👍🏻

Back in the day we used a small neon lamp's flicker to set the turntable speed.Regular incandescent doesn't flicker.

Loved the 90% mechanical control logic on that turn table. It's also cool to see one that DOESN'T have a rubber belt drive to go hard (Causing inconsistent record RPM), or to eventually disintegrate into chunks and get stuck on all the mechanical parts. Designers today would have wanted to use multiple motors and more processing power than was used to get man to the moon ! :D

Immer wieder ein ehrliches Dankeschön dafür, daß du diese alte, qualitative Technik ins Leben zurück holst.

The analog clamp meter is amazing

The stereo restoration brother.. Beautiful work!! Been following you for years since you fixed that PlayStation 1 you found in that Ebay junk box you bought years ago!!

My Irish Heritage was disappointed that we didn't get to hear "Songs of Rebellion" ! In spite of that you got my "Like" as usual !

I worked in Fords many years ago , they had spot welders on the car production line. These spot welders were fitted to over head gantries and counter balanced. The worker would use very little effort to move them around. Years on these welders and gantries were removed and robots fitted ,,, getting rid of staff and keeping the production line working 24hrs per day seven days a week. Loved the old music system,, im playing with old Xboxes and video games. Would love to see you repurpose one of these.

you really make that stereo... white... jaiks... I love that original wood finish.

hey gerolf, in respect to your intro, there's a word for that feeling of false normalcy-hypernormalization. for reference, that word was coined by the fall of the soviet union. it really describes what I've been feeling for the last three years.

Nice, showed my son I'm not the only one that likes to play with transformers.

I'm 73, and remember Grundig stereo components and Dual turntables. Love these videos, and as an aspirig German speaker, I really like when you toss in random German words for technical things. Keep it up!

This is great! You have the complete package. Thank you .

@sveinarsandvin6418

Жыл бұрын

Yes. Exactly.

This confirms my theory that the interest factor of a video is related to the danger factor.

I had several dual t/t. The first, a 1019 model. Very nice with a Shure N7D cartridge. Next, a Dual CS 721 direct drive, the absolute best t/t with a Shure V15 Type III cartridge. I was VERY impressed. This table is still for sale for ~ $500 to $1K.

Really cool to see the turntable working again.

Oh man, bigstackD casting would have loved all of that wire!

I was just talking with my daughter about the repair/ rebuild ethos. She was talking about how GenZ in the USA has essentially no prospects for upward economic mobility without a trust fund, so is relying on DIY and repair/rebuild skills to improve their standard of living. I mentioned how I also feel it is a moral imperative to repair and reuse (if possible) as a good use of resources. I referenced your channel and all it has taught me about repurposing/ rebuilding equipment to be usable again.

@philshel1

Жыл бұрын

The Zoomers could always get off their backsides and get jobs. They have the same prospects as anyone else if they find some work ethics.

Always nice to see your videos when you are working on things.... i work on Pfaff Nähmaschinen so I can tell the best thing to remove resin is real turpentine. stay tuned.

Yea! Another scrapyard adventure! I look forward to seeing you're videos all the time thanks for sharing! 😊

In the early 90's at Technical collage we messed around doing a similar transformer destruction, trying to blow up large electrolytic caps. Gave up when or huge (50kg+) transformer drew to much current and melted a 32A extention cable!

Aha - a Clancy Brothers & Tommy Makem album! My dad had a bunch of their records so I grew up with them in the 60's. Great episode by the way.

Finally a new video after a long time 😢, please keep your flow of videos coming through to keep us in a good mood to keep living in this world of frustration ❤

Love the old stereo and what you did with it. Cheers

Nice Job Gerolf . You Got Some Good Finds There. I Especially Like the Stereo.

Wow, this stereo sounds a lot better after you'd finished that white paint job. Who would had thought? I wonder how green paint sounds.

A friend of mine who plays music, loves Braun SK55 from his childhood home designed by The legendary Hans Gugelot + Dieter Rams, in 1963. My old freind's name - Hans Zimmer :-) ( I think he plays music in movies now not sure if he is really famous?) That dual/grundig pair embodies everything good that is German!!

It is great to see you back. A quality system draws a lot of money now.

Very nice work, that's a very big transformer! And a cool stereo 😊 Also i wanted to say that i really agree with the points from the intro. Sad but true, the internet was for learning from the beginning but not really any more. I quite often get surprised reactions about "how can you know x", even on subjects i really only have a remote interest for. I really struggle to understand this, since there are many hours in a day and many days in a life, with so much information easily available. How can a person overlook learning at least some of it, some related to work and life? Most of the time, its more of a philosophical/anthropological annoyance, but sometimes a very tangible hinderance in finding information myself. A made up example could be: "yes, i have tried turning it off and on, im looking for why it makes this noise when i do", but all results are about basic troubleshooting.

Loved the hifi centre rebuild you did a great job and these older systems have a much richer sound than mp3. Plus it'll last a lot longer than the e-waste you pay top dollar for if you can find a store that actually sells them.

Your resourcefulness is inspiring in these interesting times.

I had to watch the transformer tests from behind the sofa 🤣

Really like the stereo, those old units seems to last forever. Great content as always btw. :)

The quality content this man puts out on a regular basis is insane.

Another KZreadr browned out his entire street with transformer antics.

Hello playing with those transformers making big currents reminded me of some high current testing work I did years ago on current transformers for distrubtion systems. We had to test at 20 times rated current around 8000 amps through the single turn primary we where testing.The LV supply cables had to be fastened carefully as the magnetic fields would push the cables apart violently. It was a interesting job being paid to play with with transformers and your video reminded me of those good times .

The HiFi cabinet looks so much better in white, Actually more modern. ng Power meters you found were interesting, In many ways the older unit looked much more interesting.

Man... I absolutely love your videos! I highly appreciate and adore restoration jobs as well as the whole phylosophy of restoration! Thank you for good time you gave me! My head stopped aching!

Reuse an old car radio only with AM, Modernize the interior with Bluetooth and FM, keeping some buttons functional.

I love the cameos that previous repair-a-thon things make in repair-a-thons - 'oh look it's brazed vice!'