1957 Telefunken Opus 7 Repair & Bluetooth Mod
ฝัง
- เผยแพร่เมื่อ 22 พ.ย. 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!
![[TH] VCT Masters Shanghai Playoffs DAY 5 // 100T vs PRX | FUT vs TH](http://i.ytimg.com/vi/q75pv359eP4/mqdefault.jpg)
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.
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
What an absolute gem to restore to beyond it's original capacity. Awesome work Mark
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.
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!
You made a fantastic job of that Mark, especially with the Bluetooth added to it.👏👏👏👍
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 facinatings me too 🙂
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.
Donnez-vous des cours?
Je rêve d'avoir un si bon enseignant ici en France et avec toujours une si bonne humeur 🙏🥰🇫🇷
It’s a real joy to watch someone with such competence go about doing their work.
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
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.
You cannot beat UK electronics engineering channels, so relaxing and informative. Big Thumbs Up.
31:58 Your initial repair brought Hall & Oates back together! Love your channel. Cheers from Canada!
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!
its unbelievable how the circuits were constructed without circuit boards it all hangs in the air .. brilliant repair!! nice work
My dad won one of these in a contest in the 1950s. I used it the most (dad had a tin ear), and this brought back a lot of memories of listening to this gorgeous machine before real HiFi came into vogue. Now all we have are smartphones and bluetooth ear buds. Blah.
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.
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.
Great to see another cheery journey through old tech with Mark. Great content - thank you!
Reminds of my childhood. The sound, the smell, the broadcasts. Great piece of history.
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.
Mark has steady hands laying those micro parts in position. Amazing intelligence Thank you.
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...
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 😊
Cool old radio given another 66+ years of life and Bluetooth! Imagine what the Germans who build this would say about the BT tech. Nice work Mark!
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 💪🏻💯👍🏻
Best electronics repair channel on yt by far. All the best Mark.
Mark, in the early sixties I was an apprentice Radio and TV engineer. The two contact cleaners the company used were cans of ‘Servicol’ and a smaller plastic bottle of ‘Electrolube’ (“Go sparingly with that it’s a pound a bottle”). Does either product still exist? Great channel Mark 👏🏻👏🏻👏🏻
I can smell old electronics and melting solder resin from here 😄
Me too, and I'm in Melbourne Australia!
Wonderful upload, thanks Mark. I really enjoy wizards like you bringing these old gems back to life.
Brilliant work matey! Andrew Collins Melbourne Victoria Australia.
To tell you the truth, these high voltage tube radios scare me. I once got a nasty shock from one of these things, and I haven't been a fan since. Brave Mark.
I don't think I have ever witnessed a better electronics repair job ... Outstanding , Mark Cheers
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.
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.
Really nice Radio and well worth the investment of the work carried out........Made in West Germany those were the days.............
Digging around inside that old radio, snipping away, reminds me of that incredibly fantastic British film called 'Juggernaut' ... that's the film where a Royal Navy bomb disposal squad has to disarm several time bombs on board a luxury liner at sea... just brilliant ... at least you didn't get to the end of the repair and have to decide which final wire to cut to disarm the thing... the red or the blue? Be careful... the wrong decision will blow you sky high 🙂
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.
bonjour de la France mark ,je connaît strictement rien en électronique , quel patience ,et quel savoir faire ! vos vidéos sont excellente et passionnante a regarder ! tu a gagné un abonné.
1:24 ist for an ext. Speaker, yes Mark. 🙂
It is an classic German Radio with German Letters.
Just for all who are interested in this: Volkswagen actually produced and produces only commercial vehicles in Hannover. The other main production location is Wolfsburg (sometimes also called „Golfsburg“ because of the quite famous VW Golf line of cars; a city that as a matter of fact only became one because of the factory). The actual first factory was build in Braunschweig though.
You Wizard 🎉🎉🎉🎉🎉 Enjoyed that ! Well done our Mark , if I have a project for you , you maybe hearing from me 😃😃
That's my Friday night viewing all taken care of. This is a nice long one, roll on Friday.
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. 😊
"Thanks(for)giving" us another stellar peak into your brilliance in the workshop.
I worked as a bench technician at a radio shop in the late 60s. All we worked on were German imports. Grundig an Telefunken were the predominant brands, but we would see a Saaba now and then.
Omg I just found your videos , my late father use to repair TVs radios ,all those names and the components you mention brought back so many memories of when I use to watch him as a child ,im now 59, btw your knowledge is amazing how did such a young guy learn all about these old period sets , thanks great watching on a Sunday afternoon
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
My German friends sent me one bluetooth device that connects thru the bird’s eye and the plugs in back for the speakers. Genius! Works well. Have a hum on radio but i think some ground issue. Telefunken opus
Great video! Those old radios sound wonderful!
I have a Philco Transglobe that I enjoy listening while having my 5 o' clock tea!
Excelente video, saludos desde Tegucigalpa ,Honduras
Dude, your work on the jam box 📻 was amazing. The fact that you customize pieces - so cool!
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.
I could go into deep sleep... every time i listen to Mark ... the broken electronics whisperer.
Beautiful work, Mark!
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! 👍
Superbe video!!! I am an old man and I remember these. They were expensive and very good. Cheers from Patagonia. Argentina
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.
My Parents had an unusual Philips radiogram in the 50s & 60s that had separated individual Bass & Treble speakers. With a record player in a cabinet. Unfortunately I no longer have it. It did have a good sound. I think they bought it in Holland, we lived there when I was very young. I wish I'd kept it now, it was an unusual layout. Not as sophisticated at the one you're working on. My mother used to play Sachmo 78rpm
Recordings in it.
You really are an amazing technician. Love watching your videos.
The first time I electrocuted myself was working on a tube based entertainment unit of about the same vintage. Had a 78 record player, my first. Tried to fix what I thought was a bad speaker connection, ended up with one hand on the speaker body and a sweaty hand on a screwdriver. Tool slipped and I reckon I got 300v through my upper body. What saved me was I was standing up at the time, so I was able to lean away. Had I been sitting I wouldn't be typing this now. I was 16 at the time.
Mark, lovely old radio! I've collected vintage valve radios for 14 years, and what I've found is that initially when a radio is turned on after many years of slumber, it'll work okay for a while, but then the old capacitors will short or go open, sometimes explode after an hour or two's usage, so that's why it's advisable to replace as many caps as possible, even the low voltage ones!
I have to say that compared with PCB construction these old radios look downright dangerous to me! Brilliant you can fix them for sure!
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 👌🏻
Марк, вы великолепный мастер своего дела. Всегда улыбка, несмотря на некоторые вещи что идут не так. Спасибо вам. Всего доброго семье. Привет из России 🇷🇸
I love the adjustable ferrite rod antenna!
You are so cheerful even when faced with a mess of failing capacitors.
I've gotta say, that's one of the prettiest pieces you've had on your bench.
Throughly enjoyed that, so have now subscribed, thank you, takes me back it!
Amazing!!!! You almost did that radio again to bring it back to life!!! Now it is a Markefunken!!!
Hi Mark, I'm using the VHM-314 MP3 BT stereo BT module - it's in BT5.0 version and doesn't bother with any messages, but your solution is perfect 👍
Nice day 🙂Tom
Nicely done with the radio.
Залипательный ролик 😊, спасибо Марк.
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
i wish Mark had a shop near me...!
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.
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.
Your knowledge, skill and cheery banter make you one of my favourite you tube channels! Thanks Mark!
Absolutely wonderful and the icing on the cake was listening to Andrea at the end of the video.
Great video but just a little tip: These small, Tar-filled Caps with the brown sleeve made by Roederstein (usually marked with ERO) are well known here in the german vintage radio community for failing really quickly due to the bad tar sealing leaking moisture from the air. So it‘s better to just change them right away
I haven't a clue what what your talking about but I look forward to your videos.
Great Mark, i follow many restorer but you're my favourite. Thumbs up
Brilliant. An old Opus repaired and upgraded with Bluetooth! ❤
Nearly choked when you put the neutral on the fuse until I remembered our British plugs are fused. Very nice work.
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.
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.
When I was taught, I was told it's best practice to cut the component leads to length BEFORE soldering them. That is supposed to avoid the joints going dodgy down the line. You cover the cut end with solder and it protects it.
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.
This was a great video. I love how you got this old beast to play smooth music.
Cheers Mark, great bedtime video.
Very very interesting. I have a question, though: why didn't you use the tape input ("Tonband") for bluetooth? So it would have been selectable from the appropriate button...
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 👍👏👏👏👏
Nice job Mark.👍
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.
Absolutely love watching your videos Mark! Skillset is off the scale and also learned a few tips and tricks!
Lovely looking piece of kit
Bloody brilliant Mark!, great job. What a skill set you have!