1957 Telefunken Opus 7 Repair & Bluetooth Mod
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- čas přidán 22. 11. 2023
- UPDATE:
So I’m running a 3-part LIVE workshop that takes us on…
A Time Travel Through Vintage Electronics.
We’ll rewind the clock, dive into the tech of the times…
(and study the very history of how things were broken and repaired has evolved)
The workshop is coming soon, but if you're reading this then you're in luck (or not)...
And there's still time for you to sign up using the link below:
www.menditmark.com/mend-mark-...
The workshop dates are mentioned in the link above too.
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Mark repairs a 66 year old Valve Radio, made by Telefunken in Germany. It was certainly a high-end item in its day, but had acculated quite a few problems over the years. Mark also installs his Bluetooth Interface Board inside, bringing it into the 21st century!
UPDATE:
So I’m running a 3-part LIVE workshop that takes us on…
A Time Travel Through Vintage Electronics.
We’ll rewind the clock, dive into the tech of the times…
(and study the very history of how things were broken and repaired has evolved)
The workshop is coming soon, but if you're reading this then you're in luck (or not)...
And there's still time for you to sign up using the link below:
www.menditmark.com/mend-mark-workshop
The workshop dates are mentioned in the link above too.
Das ist großartig, Mark!
How on earth did you acquire such intricate knowledge of your subject Mark? You surley must have started when you were very young. With your enthusiasm for the work, you make it look so straightforward but to be able to identify faults amongst such a hornets nest of components is a truly gifted talent. Your videos are an absolute joy to watch.
The confidence of Mark is unbelievable, an example of an expert who smiles when something goes wrong.
There's nothing like the glow of a magic eye. Brought back memories of when my late father used to repair these. Thanks Mark
And his Jap's eye as he waved it under your nose.
Always a great night when Mark gets a new video out!
Yes indeed !!
Especially as it’s an hour long
bro it sets up my whole evening, sit down and watch MendItMark with a cuppa - love it @@king_ofgames3650
The best way to go to sleep !❤
IKR@@PuiuM3u
I know nothing about electricity or electronics, but these videos are fascinating! Thank you Mark, always a pleasure!
i know quite a bit, but it facinates me too 🙂
You made a fantastic job of that Mark, especially with the Bluetooth added to it.👏👏👏👍
A lot of the German made radios had a lot of features like this in this era. They were made so well too.
Lovely radios when you get them going. A lot of the paper caps and electrolytics in the filter will be needing replacing in these, but it is always good to see some proper trouble shooting done instead of just wholesale replacing the capacitors. A lot will be like this one and not operational due to the capacitors and sometimes resistors that drift in value. Those old paper capacitors go acidic inside and the paper breaks down,. They basically turn into resistors internally, which is why a lot of restoration channels will just replace all paper caps. The "Black Beauties" are also paper and foil inside. Guess it is hard when you are doing it for a customer to know how far to go as it takes time.
The Ferrite rod in this likely originally had rubber mounts and plastic brackets that held the ferrite rod in place. Epoxy will stop it moving for a while.
I usually put the bluetooth on the tape input on these when I do them. That way the bluetooth only works if tape input is selected. I designed my bluetooth module to run off the 6.3V AC heater line rather than adding an extra transformer :) There is usually plenty of power available and the bluetooth takes very little current.
If you ever need dual can caps, they still make them. I service tube amps and regularly order them. Usually from Hotrox or Watford valves. JJ, F&T and ARS are all decent and always available. Excellent video, as usual!
Mundorf make twin caps with a common ground pin too. Think it's the MLytic HV range.
Reminds of my childhood. The sound, the smell, the broadcasts. Great piece of history.
What an absolute gem to restore to beyond it's original capacity. Awesome work Mark
You cannot beat UK electronics engineering channels, so relaxing and informative. Big Thumbs Up.
Great to see another cheery journey through old tech with Mark. Great content - thank you!
It’s a real joy to watch someone with such competence go about doing their work.
As always, a pleasure to watch Mark. You really brighten up my day. They sure don't make them like they used to, in many ways it's so much easier today.
Mark makes working on electronics like tying shoes. He has such a positive demeanor when approaching a electronic problem. If only World Leaders be more like Mark 😊
Mark has steady hands laying those micro parts in position. Amazing intelligence Thank you.
My late Father had 1 of these radios at our home in Essex...I think it was Bush but looks identical. I am in awe of your knowledge, skill and patience.
In the mid-60s, my parents had exactly this Modell.Es was in our living room.I did an internship as a radio and television technician in 1976 and repaired the radio more often than it was defective. Greetings from Germany.Thank you great video
I don't think I have ever witnessed a better electronics repair job ... Outstanding , Mark Cheers
Best electronics repair channel on yt by far. All the best Mark.
What a clever chap you are Mark. Even thought I don't understand electronics I still really enjoy your content. Brilliant!!!!!
And me. 99% of the time I have no idea what's going on, but that doesn't mean I don't find his repairs/restorations fascinating! Mark certainly knows his stuff.
Fantastic Mark one of the more challenging projects you have done and certainly one of the more interesting ones too. It amazes me just how knowledgeable you are nothing seems to upset you and you keep coming through with results. keep the jobs coming Mark you have a very loyal following we continue to need a "fix" from yourself. Take care.
31:58 Your initial repair brought Hall & Oates back together! Love your channel. Cheers from Canada!
its unbelievable how the circuits were constructed without circuit boards it all hangs in the air .. brilliant repair!! nice work
Wonderful upload, thanks Mark. I really enjoy wizards like you bringing these old gems back to life.
Man, they don't make 'em like they used to... and good thing too. The transistor completely transformed electronic gadgets and made today's computers, internet etc, possible. Another great video. Excellent presentation and technical knowledge as usual. :)
If I had that radio, I'd just have to try those speakers with a stereo amp and hear what they sounded like. Imagine stereo sound from that classic radio!
Amazing radio. I have the 1956 American version, different colors and the 4 smaller speakers are mounted on the side. Still all original, still gets played a few hours a week. 😊
Always find these videos soothing.. a professional doing a professional job with utmost pride in his work, and some bonus ASMR from the various screws and stuff being removed 🙃 Really high quality content.
Superb video Mark, enjoyed immensely
I learn quite a bit watching these. Thanks!
Great to see you back - really enjoy your content👍🏻👍🏻👍🏻👍🏻👍🏻
Mark you make it all look so easy. Great work once again.
You really are an amazing technician. Love watching your videos.
Great video! Those old radios sound wonderful!
I have a Philco Transglobe that I enjoy listening while having my 5 o' clock tea!
Bravo you have given the magnificent old radio a second life.
This was a great video. I love how you got this old beast to play smooth music.
your restoration makes me happy
Top notch as always Mark
Beautiful work, Mark!
Great Mark, i follow many restorer but you're my favourite. Thumbs up
Flipping awesome! Thank you! A lot of fun watching.
Absolutely love watching your videos Mark! Skillset is off the scale and also learned a few tips and tricks!
28:42 I was surprised the coupling capacitor for the bass speakers wasn't a non-polarized type.
All-in-all a fantastic rebuild. It seems when you fix something, *it's fixed!*
You can use non polar caps for small and large signal coupling with no issues, as long as the offset voltage across it is a good bit lower than the cap's voltage rating. Polar coupling caps will introduce a tiny amount of distortion... In this old radio it wouldn't be measurable compared the amp and speaker distortions.
Wish I had the electrical skills of this guy very few people any where have this talent.
Stayed up till after 12 watching this. Lovely piece of kit. Well done on the fix Mark as always. Keep 'Em Coming.
Throughly enjoyed that, so have now subscribed, thank you, takes me back it!
Enjoyed every second of that. Thank-you Mark.
What a cracking piece of audio furniture! Nice video, Mark. 👏👏👏
That was amazing!! Thanks for Sharing Mark...
Most satisfying. I love those sound from those old radios.
I'm surprised you haven't had a lot of valve radio restorers on here telling you to change all the wax capacitors as they go leaky. But to be fair I think you have changed all the high voltage wax caps i.e. plate to grid couplers - you just didn't make a big point about doing it. There's plenty of videos out there doing that anyway. If other wax caps fail it probably will still work. It all depends on if you're doing a deep restore or just trying to get it to work reliably at a reasonable cost. Great video again, always enjoy watching your work.
Beautiful radio. Nice work mate.
Wow! What a stress buster to watch Mark fix things up. Highly optimistic. Thank you so much. 🎉😊 Good luck and best wishes to you and yours.
"Thanks(for)giving" us another stellar peak into your brilliance in the workshop.
fantastico trabajo!!!! yo aprendi con valvulares en 1982 aqui en santiago del estero al norte de argentina a los 16 años. me trajiste hermosos recuerdos de esas epocas ... hoy ya etoy casi retirado del oficio a los 59 por la vista y la firmeza de las manos. pero el amor a la electronica no se va mas...me especialize en computacion a los 45 años y eso me permite prolongar el vicio que es la tecnologia electronica.celebro que todavia haya gente como vos que trabaje con cosas de epocas antiguas electronicas... saludos desde el norte de argentina mark de un colega que se niega a retirarse...
fascinating to watch you do your magic as usual Mark-great work!
This is so awesome had one of these as a kid they are built amazingly
lovely sets, i had one and i wish i'd never sold it, great work as always
Amazing!!!! You almost did that radio again to bring it back to life!!! Now it is a Markefunken!!!
Greetings from Wombourne, I enjoy your work and have watched many of your videos, always a pleasure. I,m glad none of the caps exploded when you juiced it up.
Thanks for sharing your know how, and taking a 60+years radio and give it one more life of making music.. and demonstrating at the same time how precious thes old technologies were.. and they were within reach of the people who wanted to learn about them and repair them, right at the corner of the street, nearby.
Now, try to open any recent Dac or Streamer and see if you can get it to work again.. my EAD Dac just died, and no one can repair it.. sigh. Thanks Mark! 👍
Thanks for another great video Mark 😊
Fantastic sound quality in these sets. I have an old 1957-58 Philips that needs attention when the time comes, (and courage) to put my fingers in it as i have next to zero experience in tube/valve stuff. Excellent video as always, i just love to watch your work!
Mark, what can I say? What a fantastic vlog, full of so much content and skill. We'll done, I always look forward to seeing your work. Wish you could be more frequent with more posts 👍👏👏👏👏
Nicely done with the radio.
Glad to see that you’re doing another video Marc this device looks like my father‘s Grundig blue spot radio that I still have too this day
its all well over my head but I can see just how smart and talented Mark is at his trade, well done Sir and cheers from NZ
love watching you work, and i am surprised how accurate the VFO was with all those old caps
Mark,you are simply the best.pleasure to observe
You are so cheerful even when faced with a mess of failing capacitors.
Questi sono i video che più mi fanno amare sempre e per sempre l'elettronica, ma questi video di restauro su valvolare sono eccezionali.
Grande Mark 💪🏻💯👍🏻
Dude, your work on the jam box 📻 was amazing. The fact that you customize pieces - so cool!
Superbe video!!! I am an old man and I remember these. They were expensive and very good. Cheers from Patagonia. Argentina
What a craftsman,welldone mate
Absolutely wonderful and the icing on the cake was listening to Andrea at the end of the video.
That's my Friday night viewing all taken care of. This is a nice long one, roll on Friday.
My Mrs recognises the opening music when I start a video she always makes me go back to the start so she can see you get a shock 🤣
great work as always Mark, keep it up 👌🏻
I’m fascinated by this, there used to be a fantastic wood cased radio where I served my apprenticeship it had a round front with big wooden louvres and a vertical tuner array along with the magic eye. I used to think about replacing the internals with some modern hardware and have a radio with what looked like a 1940’s American car grille.
Another great repair mark nice one 👍🏻
I remember as a teenager in the 1970s being given a Grundig reel to reel tape recorder . It was enormous and the most complex mechanical and electrical monster I'd ever seen ! It was built on a cast iron chassis , and all the piano key controls operated solenoids that in turn pushed and pulled all the various pinch wheels etc on the deck . It had a total of 8 valves ( tubes), and a huge finned selenium rectifier on the power supply unit.
It was only mono , but the built in speaker was huge, and the microphone was a very heavy ribbon type. All it required was the heads and pinch wheel cleaning and it worked perfectly.
The neighbour who gave it to me said it was from the very early 60s ,and cost the equivalent of around £ 200 when new ( bearing in mind this was 1971 and a new Ford Escort was about ? £750 at the time!
All the best to you and warm greetings from Germany
Lovely looking piece of kit
Very cool... I grew up with one of these as my introduction to music, in my parents house...early 60's.. that magic eye always fascinated me when it was on... it was like something from outer space.. It also had a peculiar, (to me) smell... Sounded pretty good too from what I can remember... & it's probably the main reason I got into music & became a bass player. Great job Mark... I enjoyed every minute..
Congratulations,friend Mark. I from Perú.I dont speak english. Y me gusta como abordas las reparaciones,con tu carisma y toda la instrumentación profesional. Dios te bendiga. God blessyou.
Great job Mark. I restored an old Selmer amplifier recently and Watford valves had quite a few dual can electrolytics in their stocks.
Just found this channel, bloody brilliant!
Brilliant to say the least! What a guy! Marvelous to watch!
Amazing work.
fantastic work Mark!!!!!!!!!!
Another MASTERPIECE Sir!
Excelente video, saludos desde Tegucigalpa ,Honduras
Brilliant. An old Opus repaired and upgraded with Bluetooth! ❤
Greetings from the distant land of the left coast of the colonies. You have an incredible knack for troubleshooting followed by the ability to rectify those problems! That’s not even discussing your excellent video and sound quality of the videos.
That took me back a few years. I used to sit with my Grandad in the early 70's and watch him "repair" old broken radios and anything else he could get his hands on, he never had the electronics you have, just screwdrivers, soldering iron and a hammer 😀.
Brilliant stuff, liked and subscribed.
Well done Mark saving something ending up on scrap heap I am a bit like you I try to repair them if can to much ending up on the dump good video great repair
Watched this with fascination, because although I'm not technically minded, the assurance displayed here made compulsive viewing. I do like restorations, and this one fitted the bill perfectly. Thank you Mark.
Great work Mark. Fingers crossed it settles down OK!
I started watching Your channel almost every day
Impressive work. Well done 👋
That's what I like about old radios, you look inside at a wonderland - unlike the single chip and one or two surface mount components I have seen on modern things, they have no soul. Most enjoyable, thanks for sharing.