Technics SU-V90D Amplifier Service & Repair

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  • Опубліковано 21 лис 2024

КОМЕНТАРІ • 589

  • @MendItMark
    @MendItMark  6 місяців тому +6

    I want to try something new. Something more live.
    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)
    From the 1950s all the way to 2020s.
    It's still just an idea. The dates and times are to be confirmed.
    But if you're reading this, then the workshop hasn't yet taken place.
    So if you're interested and don't want to miss out, you can sign up here:
    menditmarkk.ck.page/6e8fbd9521

  • @elvisburgerking8675
    @elvisburgerking8675 10 місяців тому +22

    Mark laughs every time a problem is encountered,
    problems seems to give him joy.
    I would love to give him my 1990s Philips DCC which has given me everything but joy since the warranty expired.

    • @malcolmcooke9901
      @malcolmcooke9901 7 місяців тому +4

      He laughs at the end of most sentences.Nervous tic ?Bit of a genius though.

  • @batmandestroys1978
    @batmandestroys1978 2 роки тому +205

    You are a genius! I have never seen such a modest person! Loved the whole video. Your happy attitude and even when things went wrong, you never gave up and knew exactly what to do. Fantastic video!

  • @baronofgreymatter14
    @baronofgreymatter14 9 місяців тому +28

    The Bob Ross of electronic repair!

    • @LagrangePoint0
      @LagrangePoint0 9 місяців тому

      Except committing a "happy little accident" with this stuff might get you killed HAHA

  • @2Sorts
    @2Sorts Рік тому +37

    This is how the eevblog repair videos SHOULD be.
    What can we say about Mark? He’s an extremely competent and entertaining man. I love watching him work. You’ve a new subscriber Mark.

    • @wdavem
      @wdavem 11 місяців тому +3

      Yeah, this guy wastes no time on theory and gobeldygook math. Not that those things are unnecessary every time but school destroyed my ability to learn this stuff and I'm picking up the pieces with videos like these!

    • @elvisburgerking8675
      @elvisburgerking8675 10 місяців тому +3

      I agree
      He and another You-Tube repair guy have recently exceeded my speculation that Mr C Labs was the best repair channel on the internet.
      I wish them all fame and fortune, as they deserve it for the effort they've made to share their knowledge and experience.

    • @rayofcreation3996
      @rayofcreation3996 4 місяці тому

      ​@@wdavem I totally understand.

  • @SCAPE0GOAT
    @SCAPE0GOAT Рік тому +61

    Easily my favourite new tech channel. I could sit and watch these for hours. Probably, like many others watching, I love how other engineers go about their fault finding & repair. It's also great to see how other bits of kit break ! Great channel. Thanks for putting the videos together Mark 👍

  • @sffitx
    @sffitx Рік тому +6

    That amp needed a lot's of love, glad it got serviced/repaired instead of being thrown in the trash. Hopefully it will keep working for years on.

  • @l88ka
    @l88ka 4 місяці тому +3

    As a ex- tv repair serviceman from 1990s , i admire Mark.
    Such a talent,its clear that he is in this for decades.
    When i see someone is soldering,i know same moment how skilles is he.This man is genius.

  • @youtubxkip
    @youtubxkip Рік тому +18

    It is so enjoyable to see that others are also doing mistakes like erasing some labels or forgetting something and having it disassembled again 😀. Thanks for this shots! It makes me feel better 😆

  • @syniekos
    @syniekos 6 місяців тому +3

    Another fantastic video, there’s something very calming and relaxing about watching you work on the kit you receive along with your perpetual happy demeanour and charming presenting style.

  • @williamdavies3295
    @williamdavies3295 Рік тому +36

    Just found this channe. This bloke is a bloody genius tbh. He gets down to the job & bloody well gets on with it. Puts the yank repair bods to shame. No endless waffling & snail slow repairs here at all. He is so cheerful, even when getting electocuted!.
    Thanks Mark. Keep up uploading the great videos.

  • @Hagemann666
    @Hagemann666 Рік тому +18

    These are so compellingly watchable. I love them. I enjoy fixing my own stuff but I don't have much expertise in electronics. I can usually tell a capacitor from a diode from a transistor, I can fix a dry solder joint, and I can fix some mechanical issues but that's pretty much where it ends. So it's brilliant watching someone with so much expertise and experience who can generally fix ANYTHING. And his ability to clearly explain what he's doing, his wonderful sense of humor, and his modest demeanor are icing on the cake.

  • @pnnielsen
    @pnnielsen Рік тому +10

    Wow. I am very impressed with how you fixed the missing button labels. That is classy work indeed!

  • @g7puw
    @g7puw 3 місяці тому +2

    Hi Mark I have only seen your videos for the last month or so which makes me a new subscriber. It very nice to see somebody resurrecting elderly audio equipment a job I used to do as a living and you always very jolly and happy soul thank you for bringing your trade to us to see , it brings back so many memories thank you again👍

  • @brezovak1219
    @brezovak1219 9 місяців тому +2

    Mark I still wouldn't
    signed somewhere Your videos are my most watched. I watch you all the way to the Czech Republic. Thanks to you.... Thank you

  • @ashishm1431
    @ashishm1431 Рік тому +24

    You just can't have it unfinished, can you Mark ? Them stickers on wiped out text was an awesome effort. Best part of your videos is not taking yourself seriously but taking the job seriously. Just love the way you do the job. Bravo

    • @Mikere5
      @Mikere5 9 місяців тому +1

      *those stickers NOT them

    • @ashishm1431
      @ashishm1431 9 місяців тому

      @@Mikere5 thou shall not make them / these mistakes so often - Jules Winnfield ( Pulp Fiction 1994 )

  • @digamberthorve106
    @digamberthorve106 10 місяців тому +2

    आपली साफसफाई यंत्रणा, पार्ट PCB मधून बाहेर काढणे , साॅल्डर यंत्रणा, टेस्टींग यंत्रणा फारच सुंदर आहे.

  • @IvesMarcelin
    @IvesMarcelin Рік тому +8

    This Guys is Extra , il répare tout ce que moi je trouverais désespéré..lui il redonne la vie à n'importe quel appareil ...👍⭐️⭐️⭐️⭐️⭐️

  • @ganapathipai8853
    @ganapathipai8853 Рік тому +4

    I really missed such videos. It reflects such dedication to canabalising spares and restoration.
    Did lots of Grundig / Sony spool players, VCrs upto DVD. I was a radio TV technician attending on site in Mumbai India 🇮🇳 1974 to 2015
    LED/LCD took our jobs away.

  • @Taketimeout3
    @Taketimeout3 10 місяців тому +1

    Another beyond economical repair session. You provide an unquantifiable service for there is no way all of us will ever get to see such competence and skill in the real world. And all for bugger all.
    Thank you Mark. You also show the frustrations and not just the solutions.
    This Technics is a horror story. It is extremely unlikely any sane person would bother repairing any Amp with so many failed components and dry joints.
    But you show it IS possible, but not really worth it.

  • @Rubycon99
    @Rubycon99 Рік тому +11

    One reason this is my new favorite repair/restoration channel is because "good enough" usually bothers me. :P I was a bit worried about how the labels were going to turn out based on what I've seen elsewhere, but they turned out looking pretty damn near professional.

  • @mlbabineaux
    @mlbabineaux Рік тому +24

    I actually miss doing this kind of work. I was a radio and television technician for many years. Troubleshooting down to a component level.

  • @usatrene
    @usatrene Рік тому +5

    What a skill! You are genious, Mark. So impressed. All the respect from Japan.

  • @thejoyoffix4720
    @thejoyoffix4720 9 місяців тому +1

    I had a run-in with foam cleaner and some plastics back in the 80's when I worked in a Technics dealership reapairing these very amplifiers. It is pretty strong stuff and best kept for bare metal. Lovely job on the legends and cracked solder joints galore of course. TTFN.

  • @djzio
    @djzio Рік тому +1

    Mark, you are without equal!
    Extra gold star for the Carol Vorderman reference! 😍😍

  • @davesdigitaldomain
    @davesdigitaldomain Рік тому +64

    excellent video Mark. What program did you use to design those labels? Could you please do a video showing how to do this? I think this would make very interesting video and interest a lot of other people.

  • @jimh8644
    @jimh8644 Рік тому +5

    I admire you ability to make the diagnosis and repair of these units.
    I would not even attempt to duplicate your abilities.

  • @philipwren7509
    @philipwren7509 7 місяців тому +3

    This man's talent knows no bounds superb episode.

  • @darrenwendell1723
    @darrenwendell1723 Рік тому +3

    You can service my 1973 Technics amp any time. You go the extra mile. Excellent work.

  • @tpol6515
    @tpol6515 7 місяців тому

    I did the same thing as you 20 years a go. I am amaze of the professionalism and passion here.

  • @jonathancolling2284
    @jonathancolling2284 11 місяців тому +2

    to operate those connectors (wire grips) which got pulled from the board you push the white springy bar down and pull the wires up simultaneously. To insert without bending the wires, you push the bar and push the wires simultaneously. Onkyo use the same wire grips and I got confused how they worked too !

  • @hernancoronel
    @hernancoronel Рік тому +1

    If you are gonna do it, you might as well OVER DO IT! Congratulations on your craftsmanship Mark! 🎉

  • @artmichel5572
    @artmichel5572 11 місяців тому +1

    Mark, you are awesome! I wish that I could have found someone of your talent, work ethic, and professionalism when I decided to get rid of my stereo system. I purchased several thousand dollars worth of equipment in Japan while assigned there with the USN 7th Fleet back in the very early 80s. Probably my favorite was an Akai 747dbx reel to reel. Side note..I had 15hours of The Rolling Stones on reel and almost as much of David Bowie! Also two different Nakamichi cassette decks and a lot of Bose speakers. Why I got rid of it all is because I couldn't find someone like you. Dammit!

  • @Truthall
    @Truthall 2 роки тому +12

    im a big technics fan and just serviced my amp, brilliant job, really impressed by your commitment to details on the front panel text

  • @yoogeebearproductions
    @yoogeebearproductions 2 роки тому +9

    Fantastic work! Your a very happy man. One thing you need to watch not to mar any of the front facia or plated casing as once scratched you can't replace like the electronic parts. Make sure you always put something soft down before you work on this stuff or you'll get a unhappy customer.

  • @robertgregory6678
    @robertgregory6678 7 місяців тому +3

    I truly admire your humility and good nature. 😊

  • @JacGoudsmit
    @JacGoudsmit Рік тому +1

    That is one classy restore of an amp that had a lot of hidden problems. Well done!
    And those labels: awesome!
    Thanks for posting.

  • @UncontrolleDperson
    @UncontrolleDperson 9 місяців тому +1

    So smooth, so confident and always with a smile on his face!!! That's a pro!

  • @EricTViking
    @EricTViking 2 роки тому +5

    Good recovery with the labels at the end 👍

  • @IlBiggo
    @IlBiggo Рік тому +2

    20:30 very useful suggestion, thank you very much! I just fixed an SU-V660 with this exact problem. Two transistors were loose, "same" part but in two different spots: it's probably due to the components more than to the soldering job. I guess the terminals were dirty when they soldered them in, maybe a bad batch or bad storage. I've inspected all the boards afterwards, and those 6 joints were the only loose ones.
    Oh, and the front panel was _filthy,_ but I cleaned it with dishwasher soap after seeing the foam disaster O_O. Thank you for showing us what to do and what to NOT do.

    • @Audiorevue
      @Audiorevue 3 місяці тому

      A lot of the late '80s early '90s Technics amps suffered dry solder joints and loose connections over time. The explanation that I always understood was the culprit, is that during that time Technics started using the early generation lead-free solder. Which doesn't hold up very well long-term and causes this issue.
      I'm currently listening to music on an SUV 98 and as soon as I got it For a small bedroom system, even though it worked properly, I took it apart and touched up every single solder joint on it. It's been going good now for some time.

  • @brezovak1219
    @brezovak1219 9 місяців тому +1

    Mark ještě bych se ne
    ěkde podepsal Tvoje videa jsou moje nejsledovavanější.Koukám na tebe až české republiky.Díky tobě....Děkuji

  • @robertgregory6678
    @robertgregory6678 7 місяців тому +1

    Hey, Mark, I think some of your repair bench setup ideas are great! 👍😊

  • @Daltondoubledeuce
    @Daltondoubledeuce 9 місяців тому +2

    Had no idea you could clean boards in ultrasonic. Love your channel, cheers from the U.S.

  • @simongrove3276
    @simongrove3276 Рік тому +2

    Quality repair, such a high skill level and attention to detail, a joy to watch a true craftsman

  • @ruudslaman6966
    @ruudslaman6966 8 місяців тому +2

    Mark, you are the man. You do an outstanding job. I just keep on wondering........ how do you make a living on this......... And also, please don't ever stop doing what you do.

  • @jjcaruso44
    @jjcaruso44 Рік тому +1

    I appreciate your honesty keeping in a mistake (button caps). That is exactly what happens when you work on all kinds of equipment. Thanks!

  • @tony359
    @tony359 Рік тому +2

    such a nice and thorough repair - and such a shockingly bad PCB full of broken joints! Thank you! I admit I screamed at the screen a bit when you yanked off those connectors: those are (horrible) spring loaded ones. To remove the flat cable you press on the tab to set the wires free. Thankfully the PCB was poorly made and the solder failed :)

  • @scossa_vr
    @scossa_vr Рік тому +2

    Your skill and your always positive way of dealing with the unexpected is impressive! All my admiration from Italy.

  • @MBdrummer3288
    @MBdrummer3288 Рік тому +7

    You are SO GOOD at what you do sir, it’s truly amazing. You are the best electric guy that I know of! Keep up the great work you do sir. I love watching it.

  • @Mcqlfc
    @Mcqlfc Рік тому +2

    Just found your videos. I love repair videos and I love your happy attitude. I wish I knew people like that!!

  • @By_Rant_Or_Ruin
    @By_Rant_Or_Ruin 10 місяців тому +1

    I love the upside down speaker to hold your screw driver bits. Great video journey this time.

  • @michaelclutton8446
    @michaelclutton8446 2 роки тому +6

    Thanks for the video, your a very skilled guy. That was a huge amount of work, hope the owner pays you well, certainly well deserved

  • @jeffhansman2829
    @jeffhansman2829 Рік тому +1

    The labeling was a really nice finishing touch. As ever, a thorough and excellent job! I have yet to see you stumped. Makes me think of my 1969 Sansui 5000A I got in Japan.

  • @gerritw.rougoor663
    @gerritw.rougoor663 Рік тому +1

    I've learned so much from repairing jobs and you're a nice friendly guy

  • @jgroover
    @jgroover 2 роки тому +9

    A joy to watch-the master at work!

  • @petercroft3273
    @petercroft3273 Рік тому

    Crikey Mark, you're a brave man the way you dismantle everything down to its underpants. I'm a retired tech of 40 years experience (TV station videotape/audio/graphic arts/PC and Mac networks). My philosophy is light touch - leave well enough alone.
    The funny thing is I've just bought a stack of old Technics amps, CD player, tuner and double cassette, seven items for $50! The lot! And a couple of the items are the same as you're working on. I'm in Perth, Western Australia. Small world.

  • @zedcarr6128
    @zedcarr6128 Рік тому +6

    I've been a professional electronics engineer / electrician for 38 years, and you are an inspiration, Mark. Your attention to detail, professionalism and ''out of the top drawer'' work is awesome to watch.
    If I did what you do, my videos would sound like they are going out in Morse Code due to me bleeping out all the swearing. 😆

    • @brianhoskins1979
      @brianhoskins1979 Рік тому

      Me too, Zed!

    • @robertbox5399
      @robertbox5399 Рік тому

      Where's he get all that kit from? Lol. Our company has fits if you put a big order for solder in!

    • @BenState
      @BenState 9 місяців тому

      have a degree?

  • @robertgregory6678
    @robertgregory6678 7 місяців тому +1

    Hello Mark! The Circuit Board Plugs: J15 and J18 don’t need to be such a problem. You simply push down on the top of the plug assembly and then pull out the wire cable. 😂

  • @markwhitfield5412
    @markwhitfield5412 Рік тому +4

    impressed with the decal print, top job.

  • @johnmarchington3146
    @johnmarchington3146 Рік тому +4

    What can one say? The printing job you did for the front panel was outstanding. Another great video.

  • @davidcoleman6032
    @davidcoleman6032 2 роки тому +2

    I have to say, you're a genius! Wish you lived near me as I have a Technics amplifier, radio,twin tape deck combination which needs attention to the tape decks,circa 1990.I like how you check the rest of the equipment out aswell as the actual fault. Great to see traditional service!🙂👍

  • @joefarr3304
    @joefarr3304 Рік тому +3

    Thanks for these videos Mark. It's great to see how you deal with things when they go wrong, because lets face it, things always go wrong.

  • @alexxbaudwhyn7572
    @alexxbaudwhyn7572 11 місяців тому +1

    You're a better man than me...err, all of us, Mark 😊
    I usually avoid any item used in a long term smoker environment.

  • @stevenbliss989
    @stevenbliss989 6 місяців тому

    I love how you put labels back onto stuff, ....bloody marvellous!!!!!!!!!!

  • @Jammerk40
    @Jammerk40 2 роки тому +3

    Beautiful work on this unit! I like how you did the labels on the front! Steady hands and presto all new again!

  • @SassyXR6007
    @SassyXR6007 Рік тому +2

    watching you rip them plugs out at the start from the board was nasty! They only need pushing down at the back ( keep it held down ) then the cable comes out 😂

  • @that_thing_I_do
    @that_thing_I_do Рік тому +1

    Your smile and hard work leaves me smiling!

  • @misterbonzoid5623
    @misterbonzoid5623 Рік тому +1

    We used to wash jukebox valve and solid-state amplifiers and power supply units with detergent sprays and on paintbrushes, then hose them clean before leaving in the sun in the car park to dry. I only once broke the output transformer of an jukebox amp in this way (turned it into a kettle because I hadn't bunged the shroud holes up well enough with bubble wrap). Modern electronics are pretty waterproof.

  • @ntanakas
    @ntanakas 2 роки тому +7

    nice amp ,those toshiba transistors were top of the line back then. also, i had experience with those weird connectors, you must push the plastic down to release the cable.

  • @AFOIKRIELA
    @AFOIKRIELA Рік тому +1

    Amazing electronic lab.You are special electronic engineer. BRAVO !!!!!!

  • @Petertronic
    @Petertronic Рік тому

    I had a Technics SU-V1X amp from about the same era, so called "new class A", and it started playing up. It was so horrifically awkward to get apart I actually gave up, and got rid of it. Really enjoyed this repair video!

  • @trailermonkey8687
    @trailermonkey8687 Рік тому +2

    Wow - that was a ton of work Mark!

  • @mikescalise8380
    @mikescalise8380 10 місяців тому +1

    Another feather in your cap for saving that Technics amp from the scrap yard! I'm willing to bet you have an extensive backlog of equipment to give your TLC to!

  • @dangaAgadanga
    @dangaAgadanga Рік тому +1

    Awesome videos -- lost count of how many I’ve watched this week. This is How It’s Made version 2.0 😊

  • @jandankbaar122
    @jandankbaar122 Рік тому

    You did put on the power button with the camera not running 😉 Studied two years at technical University. Went another direction, but love your videos so much! So much knowledge and always 😊

  • @chriscollins9073
    @chriscollins9073 2 місяці тому

    One of best electronics engineers i have ever seen and a real pleasure to watch i really enjoy listening to his vast knowledge .

  • @graemeyetts3465
    @graemeyetts3465 5 місяців тому

    What a pleasure it is to see an expert at work and having fun too.
    I agree with his brief appraisal of Technics amps tho' they were well built.
    I preferred British amps
    Arcam, Rogers, Sudgen,
    Quad,
    Naim.
    There were once many brands when we had a proper manufacturing base.

  • @richclips
    @richclips 2 роки тому +11

    Excellent work, very nice channel, I'm impressed at your patience, and quality of work, not to mention all the amazing test kit and tooling that you have, really great :) thank you.

  • @zyghom
    @zyghom Рік тому +3

    AMAZING JOB, AMAZING ATTITUDE! so nice to watch it

  • @eagleflight7501
    @eagleflight7501 7 місяців тому +1

    This man is a electronic genius. Good job mate

  • @adampoll4977
    @adampoll4977 2 роки тому +9

    Great work. You must be the most cheerful technician in the world ;)

  • @dwindeyer
    @dwindeyer Рік тому +3

    The full size sticker on the upper panel looks great - I think you can replicate that by having a full size sticker on the buttons too so it doesn't obviously look like a sticker

  • @brianwood5220
    @brianwood5220 Рік тому +2

    Beautiful job Mark. Thanks for sharing.

  • @kevinjekyll1521
    @kevinjekyll1521 Рік тому +1

    Well done Sir, what a journey, but the end result speaks for itself. If people are tempted by older gear, they really do need to sit down and watch what is involved, and you must have a positive attitude as you display to tackle the challenges that will inevitably get thrown at you. I look forward to more content from you, maybe one day you will feature something I have or would like to have.

  • @Micjoh
    @Micjoh Рік тому +2

    One thing I really like about you Mark is you don't replace components for the sake of it. If electrolytics are in spec leave them be. It's rather like the British approach to classic car restoration ( preservation) where the Yanks just replace everything.

  • @rccc974
    @rccc974 Рік тому +1

    Such passion is rare these days!

  • @OrbitalStereo
    @OrbitalStereo Місяць тому +1

    Wow, what a video. You have given me the confidence to fault find a dead Acoustic Research amp that has been in a box since 1991 😬

  • @junaskoumak-yh5fl
    @junaskoumak-yh5fl 8 місяців тому +1

    i love all from technics it makes me feel great to see you repair that beautiulful piece . great job

  • @flyguy456thetechnicsking3
    @flyguy456thetechnicsking3 8 місяців тому +1

    YOU R MAGNIFICENT !!!!!!!! MEND IT MARK MY FAVORITE IS TECHNICS .............and I need your help........I wish you lived in New Jersey I would be making Videos with your Workmanship to All those that think Technics don't measure up to the Competition!!!!!!

  • @DJNeiloSF
    @DJNeiloSF Рік тому +2

    Excellent attention to detail! Nice job 👍

  • @ivanigorpollick6690
    @ivanigorpollick6690 2 роки тому +2

    Mark,you are incredible,pure joy to watch,-great knowledge

  • @JeffTiberend
    @JeffTiberend 3 місяці тому

    I've really begun to just love your videos! I was just thinking if you and Tech Moan could do a collaboration video since you two are on the other side of the pond from us Yanks. And, yes, I subscribed. They definitely designed theses things to be durable beyond their ability to function. I love seeing how knowledgeable and skilled you are! Love your can-do attitude!

  • @barrybradfordlocksport
    @barrybradfordlocksport Рік тому +2

    It really is a pleasure to watch and listen to mark always so happy pleasant and fun, keep up the good work buddy great channel ! 😎😎😎

  • @DoNaSbaR
    @DoNaSbaR 2 роки тому +3

    I clean the front of my hi-fi devices with water with a little bit of liquid detergent with a soft cloth and a small paint brush. Till now never loose any letter😄! By the way that was a very nice job and the labels turned out very well.

  • @Malegys
    @Malegys Рік тому +1

    That intro with the door opening always cracks me up 😀

  • @DaliborBlabolil-ci2tc
    @DaliborBlabolil-ci2tc Рік тому

    Dear SIR Mark !!!!!
    You are God on electronix!!!!!
    Optimistic ....
    - Enthusiastic!!!!
    But what I love - Your measuring Park ...
    Great measuring machines and machinery........ THANK YOU VERY MUCH FOR YOUR EXPERIENCIES
    I like Your GOOD VIBRATIONS !!!!!!
    Always smiling but always Very
    Careful and Health & Safety The Highest
    Level . .....

  • @york2600
    @york2600 Рік тому +1

    It's always fun to find a video of a receiver I owned

  • @00ii56
    @00ii56 Рік тому

    Very professional technology, and a serious attitude. Professional amplifiers are not expensive and are not worth investing too much in maintenance costs.

  • @davidvivian596
    @davidvivian596 Місяць тому

    Hi Mark, I always thought that Technics hi-fi equipment was the bees knees. It was certainly very popular in the 1980s/90s. But, your video told a different story. I especially enjoyed this one (as I used to work for Toshiba).

  • @dt3434
    @dt3434 3 місяці тому

    Amazing Mark-Again! Takes me back to my bench work, much simpler though 50s-70s.