Dynatron HFC205 Stereogram Repair

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  • Опубликовано: 12 янв 2025
  • Mark repairs a high end 1970's Stereogram. It only needed a fuse and a new belt! If only the diagnosis was that easy...

Комментарии • 161

  • @michaelhutchinson414
    @michaelhutchinson414 3 месяца назад +36

    I was the production manager at Dynatron when we made these. The production was initially in Maidenhead. It then moved to Kings Lynn and Fakenham in Norfolk. They thought the labour force would be cheaper there. They didnt make the cabinets. They were subcontracted from various furniture makers. Dynatron did not make the cassette unit. These were brought in from Philips in Holland. Not all they were cracked up to be. The Royal Warrant was the selling feature. Eventually the firm folded through poor sales and the parent company Philips shut the brand down.

    • @zeitgeist909
      @zeitgeist909 12 дней назад

      Thatnks for you reply. What I'd love to know is how a business went about getting the Royal Warrant?

    • @michaelhutchinson414
      @michaelhutchinson414 12 дней назад +4

      @zeitgeist909 There is no procedure for getting, or losing the Royal Warrant. It is simply granted by the Royal Family for products they have bought and simply like. Recently the chocolate firm Cadbury has lost its warrant and no reason has been given. Once a year we at Dynatron would have an enormous radiogram of some vintage since is was a valve /tube design shipped from Balmoral in Scotland to Maidenhead. It was the property of the Queen Mother. We just used to polish it and send it back.

  • @biggles50405
    @biggles50405 Год назад +36

    "Took longer than Philip Schofield to come out", that hasn't travelled well😅🤣 Great vid, starting to really enjoy your insights into old tech I've grown up with.

    • @andymouse
      @andymouse 11 месяцев назад +5

      Not getting any better now either :)

  • @robertedmead3684
    @robertedmead3684 21 день назад +6

    Been a Audio/ Hifi engineer for over 48 years and remember working these when i was about 22 as the company i was working for was the service dept for harrods and they sold thousands of these.

  • @ekspatriat
    @ekspatriat 2 месяца назад +4

    As an ex Draughtsman....somebody made drawings of that lot!! GA's...schematics....manufacturing drgs. Amazing...all on an A0 board with Rotrings and flexi-curves.

  • @robertmellor5808
    @robertmellor5808 7 месяцев назад +12

    I used to work at Dynatron, back in the 70s,making these units. Happy days!

  • @maryahmed4899
    @maryahmed4899 Год назад +19

    Watching from Southern California!
    I’m a retired TV/Radio Broadcast tech lady who started out in the mid 70’s

  • @kegandpaul6077
    @kegandpaul6077 4 месяца назад +9

    The Company I worked for assembled the radio part of these Dynatrons under sub contract to PYE/DYNATRON, My job was tuning alignment and final test.

  • @bobrose7900
    @bobrose7900 9 месяцев назад +9

    My mum worked for Garrard turntables back in the 60s... they made some good kit in their day, the 401 was a beast. Lovely woodwork and nostalgia. Good job, well done and well done to the owner for cherishing this piece of antiquity.

  • @DaftyBoi412
    @DaftyBoi412 12 дней назад +1

    That looks like an antique set of DJ decks. Except one is a tape deck, the mixer is a tuner/amp combo, and the flight case is made out of fancy wood! xD

  • @pete3897
    @pete3897 Год назад +4

    10:35 - BWAHAHAHAHA! That almost slipped past me that one. Love it Mark, and have loved spending my evenings with ya recently :)

  • @briangibson8009
    @briangibson8009 9 месяцев назад +3

    Here in Liverpool UK there was a store that was a dealer for Dynatron, they were in a class of their own,
    beautiful cabinets . You had to be well off to own a Dynatron in the 1970's

  • @renaldonormani6646
    @renaldonormani6646 20 дней назад +2

    Loving the fact that a bad lead led to trouble…I’m not alone!-)

  • @Tech-Nobby
    @Tech-Nobby 2 года назад +13

    back in the 70s. my dad had a Fidelity UA5 music centre and we listened to the radio before leaving for school etc
    I managed to track two down with the intention of making one good one - then covid hit etc. Watching these you've inspired me to have another try, taking LOTS of pictures along the way so I know how they go back together

    • @patrickjmorgan
      @patrickjmorgan Год назад +1

      I used to sell those when I worked in the CoOp!

  • @PrinceWesterburg
    @PrinceWesterburg Год назад +15

    My uncle has one of those to this day and I remember hearing it in the early 70s and loving the deep bass. About 10 years ago I was over there and asked him to put it on and it sounded terrible! I asked if it was faulty and he said no. Then I remembered that I'd worked for Audio Note for 10 years and every system in my house is Class-A valve gear, so I smiled and said "Tricks of the mind!"

    • @Shrebina-kq4cs
      @Shrebina-kq4cs Год назад +2

      Your ears are well-trained now. Also we always remember past things more positively than they really were. So when you revisit them later.... you are met with disappointment. But having worked at AN, I'm sure you could tweak it to sound MUCH better !

    • @hydorah
      @hydorah Год назад +4

      Dynatron stuff does sound good particularly certain speaker models and the valve amplified kit. All equipped with proper British Mullards. If it sounds bad he's probably got some dodgy caps and just got used it, it's aged along with him. Fix it for him!

  • @robburbrink8277
    @robburbrink8277 Год назад +1

    I'm moving to England and you're going to teach me all your secrets Mark, happy days!

  • @clydesight
    @clydesight 4 месяца назад +3

    Many early cassette recorders had non-latching fast forward buttons. SANYO units mostly.

  • @Raptor50aus
    @Raptor50aus 2 года назад +6

    What a very nice set. I do like the cassette mech too. I think Alfie is very cute too.

  • @robertovers1863
    @robertovers1863 Месяц назад +2

    i remember my mates mom had one in "the posh" front room, we were not allowed in. but one night she went out, and we played queen at full blast ! those were the days ( and after we ran through a field of corn )

    • @cyclic2696
      @cyclic2696 26 дней назад

      Hehe - I did the same with my parents (wonderful) B&O Stereogram. WHAT a fab sound! Rick Wakeman 'White Rock' at Vol 11 was awesome...

  • @flashchrome
    @flashchrome Год назад +6

    Whilst, with a finger or two, petting the studio cat, holding an almost anchient tape deck just loosened from the stereo unit stood on its side, he coined the phrase; 'This took longer to come out than Phillip Schofield'

  • @insideleft3584
    @insideleft3584 Год назад +1

    it's so weird how aesthetics change from generation to generation. I assume this was seen as the epitome of refinement but i see the case and my knee-jerk reaction is "great aunts sideboard" or something lol and I can't believe anyone would hide that, imo, extremely smart looking tuner unit. Great work as always.

  • @brianmccusker3852
    @brianmccusker3852 Год назад +11

    Glad to see you have provided a home for a cat. Lots of toys, but please keep him/her safe from shocks. Cheers

  • @nards1341
    @nards1341 2 дня назад

    Well done Mark! Love your videos so much 💯

  • @mirbasharkhan5979
    @mirbasharkhan5979 Год назад +2

    I can say you are the Masaya of electrons, you have miraclus hands,I really enjoy the way you fix the problems❤

  • @nezbrun872
    @nezbrun872 Год назад +23

    "This took longer to come out than Phillip Schofield": belly laugh of the day fulfilled!

  • @stuartlee8041
    @stuartlee8041 Год назад +1

    Out of Kings Lynn factory in the 70's, I worked on them, my mother owned A similar model without a tape Deck, which worked perfectly, she sent it to the local auction house in 2004, and received £6.00 for it....

  • @Taketimeout3
    @Taketimeout3 Год назад +1

    The dynatrons were very good. I have about twenty of them, all with goldring lencos turntables. I bought them to pillage the Lencos but they are too nice to break!
    The amplifiers 24, 25 and 26 were a bit underpowered but the type (31?) you are working on are much more powerful.
    And the modular construction makes access very easy.
    Clunky, but well laid out for servicing. I love them .

    • @michaelhutchinson414
      @michaelhutchinson414 3 месяца назад +1

      The output amps were very cheap to manufacture. We put them in every model from the bottom of the range to the classy looking units like this one. The sound quality was very mid-range, the price wasn't!

  • @NigelJones01
    @NigelJones01 13 дней назад

    As I recall back in the day, Fast Forward used to be that you'd need to hold the button down rather than latching on - it was a feature. Rewind would latch and only stop when you pressed the Stop button.

  • @stuartcotterrell5493
    @stuartcotterrell5493 Год назад +4

    Coming from Hereford I'm loving the Wye Valley Brewery pint glass :)

    • @waynegriffiths5143
      @waynegriffiths5143 Год назад +1

      Hi Stuart, I’m from Hereford also👍

    • @P5ychoFox
      @P5ychoFox Год назад +1

      @@waynegriffiths5143 Me too. This can be the official Herefordian corner of the comment section.

    • @chascarpenter5006
      @chascarpenter5006 2 месяца назад

      I used to live there too, Elthelstan Cres back in the eighties....

    • @daviddavies6017
      @daviddavies6017 16 дней назад +1

      Of course you are. There's a Wye Valley pub on the Street they named after you!

  • @gizfpv
    @gizfpv 2 года назад +15

    I've got absolutely no interest in audio equipment whatsoever, so I don't know why your video was suggested to me. But I actually found it really interesting. Watched a few of your videos now. It's good stuff :)

  • @edc1806
    @edc1806 Месяц назад +5

    I had to Google Philip Schofield, being an American. lol But "We have a smug face on Mark now." Was my favorite!
    Really enjoying your channel!

  • @smousesmouse2626
    @smousesmouse2626 Год назад +2

    there was a lot of early tape Dec mechs that did not latch on the FF button. Great vid thanks.

  • @WC0125
    @WC0125 21 день назад +1

    Another enjoyable video Mark. Ah, the "Buckingham" Queen Anne Dynatron. Hopefully the legs are still somewhere and not just amputated for convenience? It was quite pricey when it was new. Introduced for the 1976 season, it started out being sold for a recommended £664 ($1341 USD). That's £3851($4839 USD) in 2024. By 1977 the leftover dead stock was being sold for a deeply discounted £370. Crikey expensive but for looks only, not quality reproduction.
    Like many of those units, it unfortunately isn't what it pretended to be. It looks nice but is an assemblage of those 1970's plastic and mostly rubbish components. Dyatron touted the record deck as a Garrard "single play with a magnetic cartridge". Yes, it is, but it is a tarted up low end unit built on the the old AT-60 design. A decent design but not high end. It is also problem prone especially with frozen cycle cams and turntable sleeve seizures. By the late 1970's long gone was the quality that made a Garrard a "Garrard."

  • @patrickjmorgan
    @patrickjmorgan Год назад +12

    Never mind the leaky caps or the bias offset. What’s the cats name? We like to see a Kitty in the workshop!

  • @kaktusadas622
    @kaktusadas622 9 месяцев назад +1

    Hello, I love watching repair videos, I admire your knowledge, you have great videos, I've probably watched all of them, I'm looking forward to the new ones, best regards.
    👌👌👌💪💪💪.

  • @evilutionltd
    @evilutionltd 19 дней назад +2

    I saw the cat in the thumbnail, I clicked the video.
    I saw the cat in the video, I clicked "like".

  • @codebeat4192
    @codebeat4192 Год назад +2

    When you lubricate the capstan shaft, remember that you clean the capstan on the frontside before testing or popping in a tape.

  • @CoockieClassiCKeks
    @CoockieClassiCKeks Год назад +1

    I still remember those old tapemechanism, easy to repair but not all were playing tapes well (-:
    Love your work!

    • @michaelhutchinson414
      @michaelhutchinson414 3 месяца назад

      From my knowledge of working for Dynatron the tape mechanisms were made by Philips.

  • @grave8digger8
    @grave8digger8 Год назад +2

    I Love this old 70ties Things.
    In Germany wie have Wega, rosita, Grundig and other compact Systems :)
    Old system with a toroidal transformer

  • @ncooper8438
    @ncooper8438 9 месяцев назад

    Just the one easy to replace drive belt and a proper capstan flywheel, brilliant, you won't get that nowadays.

  • @caramba10
    @caramba10 16 дней назад

    I had a Sony cassette player and the FF didn't latch either in fact it was labelled 'Skip' for just shifting the tape forwards in short sections with one press. Otherwise you have to keep pressing 'stop +play' each time you wanted to skip forward a bit.

  • @Plons0Nard
    @Plons0Nard 11 месяцев назад +4

    Just watched for a second time 😊
    Just for the joy of it.

  • @glenwhatley4125
    @glenwhatley4125 Месяц назад +1

    The FF button is probably a 'Scan' feature, leaving the head pad slightly in contact and head active during the search operation.

  • @hancecrawford
    @hancecrawford 9 дней назад

    well done mark classey sterogram good job

  • @followthetrawler
    @followthetrawler Год назад +3

    brilliant Pip reference :)

  • @jameslaidler2152
    @jameslaidler2152 7 месяцев назад

    "In this world we're just beginning, to understand the miracle of living! Baby i was agraid before, I'm not afraid anymore!"

  • @annierenard5954
    @annierenard5954 2 года назад +2

    excellent video, thank you

  • @outfield1988
    @outfield1988 8 месяцев назад

    Beautiful piece.

  • @gord8382
    @gord8382 Год назад

    Love that set, god bless the king now i guess.

  • @stephenlewis9159
    @stephenlewis9159 Год назад

    My Dad's Dynatron / Garrard turntable had issues with the pots going very scratchy. I didn't see you check the volume knob so I assume it worked ok and wasn't reported. That old system sounded better than budget to mid-range HIFI systems 20 years later. I'm gutted he chucked it out at the dump.

  • @mikemmikem2758
    @mikemmikem2758 Год назад

    Very cool design.

  • @TheManLab7
    @TheManLab7 Год назад +1

    Going back to the tape deck. I would of stuck a notch in it myself. As it just makes things so much easier and like any other tape deck.
    But OBVIOUSLY you would of spoken to the customer first, before you started modifying it.
    0:13 Is that a Record No25 by any chance? And does it have a quick release? Having a quick release on THAT size of a vice is sooooo handy, but if yours hasn't.
    Then just imagine how many times, over the countless years, you've had to finger your vice just to open it up enough, to stick a large part inside. But there are times when you didn't finger it enough on the first go, so the part won't fit. So THEN you have to finger it just a tiny bit more, to get the large part inside. The bigger the part, your never quite sure IF you've fingered it open enough to get it in on the last try.

  • @stuartgoodall225
    @stuartgoodall225 2 месяца назад +2

    If it was Cliff Richard , it never will! 😂

  • @JamesFord-g5e
    @JamesFord-g5e Месяц назад

    On tape deck make sure capstan is clean & pinch roller is clean in good shape

  • @MyLostToys
    @MyLostToys 2 года назад +1

    I LOL when you said 'Posh'!

  • @sPi711
    @sPi711 26 дней назад

    I didn't notice any cleaning of the capstans or demagnetization of the tape heads like you did in some other videos.

    • @SlartiMarvinbartfast
      @SlartiMarvinbartfast 19 дней назад +2

      In these older videos Mark sometimes doesn't show some of the steps of the repairs.

  • @hahanah1463
    @hahanah1463 2 года назад +62

    took longer to come out than Philip Schofield 😆😅😆🤣 subscribed JUST for the joke Alone

    • @marcse7en
      @marcse7en Год назад +3

      You find homophobia funny? As a gay man myself, I would suggest Mark's comment has undertones of said homophobia? And shame on you for finding it so hilarious! Would YOU like the piss ripping out of you??? ... How would Mark like it if I said the Stereogram weighs about as much as he does? And that's NOT even being particularly hateful!
      (Due to an infestation of hate-filled trolls, and the toxic nature of social media, I no longer monitor or revisit any comments I may make!)

    • @TT-wz6xy
      @TT-wz6xy Год назад

      @@marcse7en oh behave ya big touchy poof

    • @Zardox-The-Heretic-Slayer
      @Zardox-The-Heretic-Slayer Год назад +15

      @@marcse7en where was the homophobia?

    • @markr9069
      @markr9069 Год назад +15

      @@marcse7en that's not what homophobia is

    • @nezbrun872
      @nezbrun872 Год назад +12

      @@marcse7en Can you explain why you think it's "homophobic" as you claim? Why would you think that the person delivering the line might not be gay themselves?

  • @cwitechnical
    @cwitechnical Год назад +1

    choice vinyl to test too! love a bit of sky!

  • @andygozzo72
    @andygozzo72 2 дня назад

    nice beast, i have a HFC58(SRX30) that looks like it uses the same power output modules, unfortunately the radio part is very poor, it uses those mullard rf and if modules so suspecting one or both of those.. sometimes 'motorboats' on gram if you turn up the bass and switch loudness on, and a very occasional random case of one channel going noisy and almost dead,

  • @jmgraydz
    @jmgraydz 11 месяцев назад

    I think the fast forward is tied to the play button so you press both and it fast forwards for long fast forward or you can just tap fastforward for little jumps

  • @hw4527
    @hw4527 Год назад

    Thank you for posting 👍👍

  • @gdj6298
    @gdj6298 Год назад

    The received wisdom used to be that the most expensive component on the board will sacrifice itself to protect a 3p fuse - got lucky this time !

  • @dek123
    @dek123 11 месяцев назад

    You can see why the British hifi industry went to the wall apart from the really high end equipment. Virtually every component in this music centre was made from metal, in imports it’s always manufactured from plastic.

  • @nameone7183
    @nameone7183 Месяц назад

    Excellent series, where people can actually learn something. I have similar digital scope yours - TDS5054. On mine all the fans blow inwards. Is that correct ?

  • @chrismurphy8383
    @chrismurphy8383 Год назад

    Hi - great channel - just wondered what a job like this would cost someone

    • @paulperry7091
      @paulperry7091 Год назад

      Doing this job would likely cost most people their sanity. Don't know what the customers would pay.

  • @Hr.0ldenberg
    @Hr.0ldenberg Год назад

    Hello, best regards from Nothern Germany, the Home of Becks Beer🙋
    Please Show more CatVid...😊
    Nette Grüße aus dem Oldenberger Land 👍

  • @sturm7130
    @sturm7130 Год назад +1

    In a comment someone asked about use of silicone or petroleum based lubricants. DO NOT use Silicone based lubricants near electrical equipment. Silicone lubricant is Silicon (Si) based and electrical arcing turns it into glass (SiO2), an insulator. Not good for switches, relays or potentiometers. Silicone lubricant vapour entering these is enough to cause a problem. If you don't believe me, refer to Subaru's recent global brake light switch inoperative recall.

  • @ianshepherd7507
    @ianshepherd7507 Год назад +2

    Took longer to come out than Phillip Schofield 😂😂😂

  • @ssgeek4515
    @ssgeek4515 Год назад +3

    Phillip Schofield ref was excellent sir😂

  • @MichaelCowden
    @MichaelCowden Год назад +2

    Mark, are there any problems that can be caused by machine oil degrading plastic or rubber parts? I ask because I have been wondering whether I should use silicone instead of petroleum based lubricants on such mechanisms. Great repair, though I’m still wondering what popped the fuse.

    • @Lyndalewinder
      @Lyndalewinder Год назад +2

      Can't give you an absolute answer Michael but I can tell you that you should not use petroleum products on plumbing plastics and rubbers at all as it degrades them - safest is to use silicone.

    • @MichaelCowden
      @MichaelCowden Год назад

      @@Lyndalewinder thank you very much for the response!

  • @jhareng
    @jhareng 3 года назад +3

    Newer one than me moms which didnt have the cassette but did have the speakers facing the front at both sides.
    Would Abbot work than IPA?

    • @MendItMark
      @MendItMark  3 года назад +3

      Greene King’s IPA is designed to clean your insides out, and not cassette mechanisms. Abbot Ale will make you subscribe to my channel. 😆

    • @jhareng
      @jhareng 3 года назад +1

      @@MendItMark Already have done Mark, fascinating stuff watched every video till 3.30am this morning.

  • @markthompson9582
    @markthompson9582 Год назад +2

    Impressed the cat knows all about Philip Schofield.

  • @michaelbrind9222
    @michaelbrind9222 7 месяцев назад

    Hi, dont suppose you have a radio signal meter for a Dynatron SRX 26 ? think it was fitted to a few other models aswell , regards Mike

  • @LondonPianoman
    @LondonPianoman Год назад

    surprised you didn't mention cleaning the heads.. and the capstan roller.. gunk on these cause the tape to stick to them and the wind round and round and a pain to get out

  • @mortjoer
    @mortjoer Месяц назад

    I want a T-shirt with smug face Mark on it 🤣

  • @edwincancelii2917
    @edwincancelii2917 2 года назад +3

    Cute cat.

    • @MendItMark
      @MendItMark  2 года назад +3

      Absolutley! Alfie is the BOSS!

  • @wholiddleolme476
    @wholiddleolme476 9 месяцев назад

    I've seen that before with FF, where it's just a cueing mechanism rather than a full locking FF.

  • @BulletmanDoom
    @BulletmanDoom 11 месяцев назад

    I wish all tape deck belts were that easy to change

  • @mistermac56
    @mistermac56 Год назад

    I was pleasantly surprised that the unit has a toroidal transformer.

  • @davidkidd3975
    @davidkidd3975 Месяц назад

    Nice looking that

  • @stepheng8779
    @stepheng8779 Год назад

    Early cassette decks didn't have a latching FF, only RW.

  • @kendom33
    @kendom33 2 года назад +3

    Oh. I like that machine. Quality :)

  • @paul.alarner6410
    @paul.alarner6410 25 дней назад

    the deck looks like a garrard sp25 mk4?

  • @tim0steele
    @tim0steele Год назад

    Did you get the stereo LED working?

  • @stuartgoodall225
    @stuartgoodall225 2 месяца назад +1

    Mark, what is your cats name?

  • @kendom33
    @kendom33 2 года назад

    I did repair one of these back in the day
    It wasnt as nice as this one though. Were these not Philips or mullard amplifiers?

    • @michaelhutchinson414
      @michaelhutchinson414 2 года назад +1

      The cassette player was from Philips. Most of the electronics was produced by Dynatron but the radio included a modular Mullard tuner which was very cheap.

  • @maxkendal5152
    @maxkendal5152 23 дня назад

    My mum had one. Beautiful furniture but the system wasn't special back then.

  • @paradisemusicrecording
    @paradisemusicrecording 7 месяцев назад

    👍👍

  • @ianrayner8367
    @ianrayner8367 Год назад

    Hi where are you based , I have a dynatron to service etc

  • @SubTroppo
    @SubTroppo 8 месяцев назад

    Given that one should hide that nasty new technology, Imagine the man who came home with the first candle and lit it up. It would have been, "Yes dear, but you'll have to make a wattle and daub shield for it as it is so blindingly bright and so that it fits in with the décor"

  • @bobsbits5357
    @bobsbits5357 2 года назад

    is it some older one who you fixed it for i bet i had a mate who picked one up from car boot sale

  • @Kasetpitajadul
    @Kasetpitajadul Месяц назад

    auto stop button not check?

  • @bexleydragon5294
    @bexleydragon5294 Год назад

    The screw came out way before Philip Scofield 😮

  • @КонстантинЛазарук

    Cat🐱👍!

  • @ovalwingnut
    @ovalwingnut Год назад

    "We have a smug face on Mark, now".... I wish I could use that line but my name isn't Mark. Just saying. Thank you for the video.

  • @SteveGunnfl
    @SteveGunnfl Год назад

    Thank you for sharing what you do. We didn't see you cleaning the record playback switches on the tape deck PCB or cleaning the capstan and pinch roller, I wonder if you do that as a matter of course. Have to say I'm really surprised you leave old electrolytics in even if they test out okay for me that's just asking for trouble.

  • @PeasGraveny
    @PeasGraveny Год назад

    Nice 1

  • @allanredford6070
    @allanredford6070 Год назад

    mice to see uk qualitx product with midular design, faciliraring etter sericeability. afairly hardx jao tape deck chosen, too., plated metal components

  • @derekblake9385
    @derekblake9385 Год назад

    I hate electronics even though I work at a hifi company, but these videos are so interesting Mark.

  • @aliemlek
    @aliemlek Год назад

    👍👌👍👌

  • @kjm-ch7jc
    @kjm-ch7jc 8 месяцев назад +1

    These used to be manufactured in Kings Lynn, sadly long gone.Why the sarcastic comment about Phillip Schofield , loved watching your repairs don't think I will anymore.