I found Mark whilst searching for some info of how to repair my Sony RCD-W100 CD player. His exploits in the world of repairing all sorts of audio equipment really is quite captivating. Never have I seen such electronic expertise demonstrated in such a charismatic way. Just amazing!! Thank you Mark.

I recently restored a Dynacord GIGANT amplifier from 1969. It was a total nightmare. 79 capacitors, several resistors and transistors, new tubes, some bad pots, and so much more. After three months it's finally restored to all it's glory.

It's videos like these that further fuels my desire to continue to learn how things work as well as my beliefs of "why buy it when you can build it" and "why replace it when you can fix it". Great videos, please keep them coming!

I had the crappiest day I've had in a long time at work today. Just binged about 4 episodes and laughed my butt off while putting the finishing touches on my Trio TW-61. Thankyou sir!

Great video. I really enjoy your jolly, good nature, chuckling at every challenge. You set a fine example for me. I tend to get a bit grumpy when encountering setbacks. You've given me renewed vigor to tackle a troublesome effects unit I've left lie for a bit. Subscribed!

Well done Sir. I would definitely have changed out those regulators and smoother caps because they've clearly been under extreme load due to the tantalums. The fuses did flash perhaps they need to be a surge tolerant type. I love this older gear its what I was raised on and so nicely built. I design a lot of my own stuff and I still build it through-hole in the same way and avoid SMD.... It's proven to be such reliable technology

It's a pleasure to watch someone who knows what they are doing

Mark you never disappoint, excellent work mate, and a joy to watch.

Hi Again Mark, Another brilliant repair presented in a manner that makes electronics interesting with the right presenter. Keep up the good work

Mark is a Renaissance man of repair! Amazing work.

A renaissance man of electronic repairs indeed! Excellent troubleshooting skills Mark!! I'm looking forward for your next episode! - I reciently came across your channel - I've been binge watching it ever since! Thank You!

18:05 - sounds like the soundtrack to a Pat Troughton era episode of Doctor Who!

When I was still training, like in 1977, I used to maintain stuff on Ferries, fromrRadar, radios and to teletennis machines. I remember the size of the boards in them, about 2 feet by 18 inches, SRBP boards, which used to warp because they were crap, absolutely packed with 74xx chips, literally hundreds of them.

been doing this for 58 years and you are a good tech.

I love the videos Mark, I look forward to new ones being made. Really enjoyed this one in particular, it's a really nice old delay, I'm so happy you got it fixed. It's pretty rare here in the US and quite pricey! Keep up the good work! Thank you Rb

I have a few of the old Dynacord delay units for speaker delay. The battery dies and can leak. Think i replaced a few other things, a cap blew too i think, after years of no use. I didn't have the correct battery and needed it the next day. I had old lithium batteries that look like AA much bigger backup batteries. I couldn't solder to them so had to modify a battery cage and fit the larger battery that way. Pulled off a mini festival in a circus tent. very cool.

Your skill and patience is amazing 😊

That was really interesting when those two fuses lit up!

I just came across to your channel. I find it very interesting and liked it. You are joyful, confident, know what to do and how to do. Keep it up Mark

18:04 Mark, I think you just composed the next science-fiction movie theme! I think this unit has had a rough life in some studio somewhere. Great video as usual mate, thank you!

The sound from the speakers reminds me of the classic sci fi movie Forbidden Planet. Good job as always Mark.

That was an involved job. But such a beautiful vintage device. I still have all my old 80s gear

Excellent work, as usual. You make it look so easy.

Fantastic channel. Really fun seeing how you repair stuff. Love how informative it is. Getting this wholesome feeling as well. How you don't have 50 X more subs is beyond me. Keep up the amazing work! :)

Old school for me I had change 15 leaky electrolytic capacitors for my 90s 1 pre-amp tube compressor/limiter and luckily I cleaned the board and it's fixed and it's about the 6th time I've turned it on since I've never used it. I like it more that I fixed it!

Enjoyed seeing this DDL relic bought to life!

That is the thing with Dynacords. Wonderful engineering, caps and pots always fail, often switches too.

You know I love how you fix it and then you notice some other problems with the potentiometers and capacitors and you decide to fix them too. Some repair text might say, oh I got it working and fixed its main problem and that's good enough, not you you make sure it works how it's supposed to work.

Mark, we love you. Thank you making these videos. Amazing work!

sounds like a bbc sounds affect tape/record i was waiting for the doctor to appear or a darek to bust through the door screaming exterminate😆. it amazes me how a spent cap can cause them kind of problems another excellent video mark

Another great video Mark. Very interesting as usual. Thank you

Those Roederstein caps always seemed to failed short! And the brown plastic ones don't usually fair much better, as anyone who's worked on vintage B&O equipment will know. Glad you blanket replaced the crucial ones!

You are really good at explaining what's going on as I actually felt like I understood what you were doing, great job :)

Thanks for another great video Mark. I'm pleased that I found your channel.

This was highly entertaining. Thank you!

Another great one. Your methods are sound and you are very thorough. Really great work.

Where ever you are fixing this stuff, I hope the people appreciate the great work you do

Excellent Mark. Love the Channel and your expertise. Brilliant.

Yay, 2K subscribers! Congrats. Rising rapidly and deservedly so.

I watch your channel for hours!

I tryed soldering last night. It`s hard with cataracks lol. Looked a mess this morning in the light. I fix al sorts of things. love this channel. Wish I was so clever.

This is such an excellent channel. Very enjoyable to watch.

Great video on a professional unit. All tantalum caps are time bombs. I've seen them blow their tops off!

Хоть я и мало,что понимаю в английском, но вы большой молодец. Привет от радиолюбителя из России, конкретно город Омск.

You always pull through on repairs good work

Thanks for the video Mark, very interesting repair

I discovered you channel a few days ago... Nice video's, verry interesting to see a colleague repair man puts a lot effort on this equipment! Looking forward to seeing the other video's! Thanks! Greetings from the Netherlands. 🤗🤗🤗

Dynacord, really the top of the crop i think,. lovely repair thanks for the video

The inrush current looks quite close to breaking those fuses looking at the glow - even after replacing some old components. I guess its common for old components to draw more current than when they were new. I wouldn't be surprised if those fuses blow again after a few power cycles, especially is the unit is used in a warm rack.

Most people I don’t think appreciate you very positive attitude whiz is hard to come by in life these days.

Good job. Happy Christmas!

Mark you are super cool to watch

Great video and awesome repair! Quick tip: the tang on those pots can be easily removed with side cutters, they are quite brittle and come off pretty clean

The intro music suits him so well ...

Hi Mark . The ROE Capacitors are very bad Capacitors. Great Video . Thanx from Germany

I don't recall ever reading about a failure mode of a capacitor as being "knackered".

great stuff, watching all your videos, Mark you should be on TV. entertaining, educational and very interesting, thankyou for your hard work. ay it

Love your videos, keep it up!

7:42 "Black screws on a black surface" That is what Zaphod Beeblebrox said when he was in Hot Black Desiato's stuntship. "You press a black button and a black light turns on ...." Hitchhikers Guide to the Galaxy 😊

Thanks for the video Mark.

and have you never heard the expression 'beware the blue tants'. They were absolutely notorious in TVs.

Hi sir really your are genies, your are grant service Engineer i like you servicing method thank you once again.

Beautiful video, thank you 👍😊

He's back!

Brilliant repair! I did wonder about the 'hot' tants near the start, they were showing as 34 and 28C on the Flir, not a huge temperature I would have thought? It's one problem with the auto-ranging on these meters that things appear 'white hot' when they're just the warmest thing in shot.

those flat toggles remind me of my early days as a musician in in the late 80s early 90s!

Hey Mark, thanks for your channel. The most thing I like you is your smiling, happy face. Most of the electric and electronics professionals will have wrinkled forehead and tension (more over filled with ego). I really feel so happy till the end of your videos. Ohh BTW what is that foam spray that you used to clean the exteriors?

thanks for sharing. saludos desde Mexico

Nicely done!

always impressed with your knowledge of what to do - how did you acquire such learning Mark - if I may ask. It's a pleasure watching how you diagnose and repair these pieces of equipment. Loved it when you connected the speaker - it sounded like the beginning of a Hawkwind album - awesome!

wow! out of all devices in the world you got this one! :D I have one broken DDL 12 too! I'd really like to fix it / have it fixed.

You have massive equipments library

Great video sir

Bloody tantalums. Bane of my existence.

super great job !

Very nice Guy and interesting video,! Regards from Germany

Hello friend, I send you greetings from Spain. I appreciate the time you spend showing us your work, it is very valuable information. I like the audio of your videos, the sound of the tools and equipment manipulation is relaxing. I would like to ask you for a repair video with only audio of the ASMR type. All the best.

Congratulations.

The most failures are related by dry capacitors. 1983 is a long time ago and the ELO Caps are well known, getting dry. Nice work...

I have dynacord gigant 3 amp from bouts the same era excellent gear back then

I must admit to a grudging admiration for your "let's push some joules into this & see what glows" approach when faced with a short. I work a lot on revox gear, & this wouldn't work- before you found the duff cap buried in the middle of an audio card, you'd fry off the delicate tracks on the PCBs. I always think revox boards look like they were made by a talented but highly strung silkworm.

😆 2:21 STILL have mine Sinclair Spectrum! 😂 I have it in 1985! ans still the software on cassette tapes and some books and wrote the software lines, and one dot missing and its not working ore stops at that moment. also have then original tapedeck for that. pfffff..... 38 years ago, where is my time goes? 😊

16:52 those top two 200mA fuses definitely got hot there

First time seeing this channel and holy shit this guy is just so charming and has a gorgeous smile. lmao

Hi Mark… I am a follower of your videos from Canada. Excellent work! … just occurred to me that I have an “vintage” Sony cassete deck TC 165 that needs attention… I know it’s not worth much, but sentimental value has no price…. Could be a nice piece for one of your videos, no? 😃 … anyway, congratulations and hoping for the next one!

Sir goodevening. I am philipino good work sir.

I have repaired quite a few devices, and often, you can see the wires in the fuses move when turning on the power. But if they light up, I would replace them with slightly higher rated ones, even if they are slow-blow fuses.

I've had many issues with old ROE capacitors and that unit is full of them!

Nice job 👍👍

Great work, I love to see older audio gear being salvaged. However, butanone is a known skin irritant, as well as being flammable, and shouldn't be handled with bare hands.

Great video

Always a joy to watch your videos. One question, when you find a leaking or shorting capacitor why wouldn't you replace all of the similar capacitors?

Good morning we love electronics and repairs and restoration of appliances we are together..one more writing...go my like always

Блин молодец парень все подробно Объясняет что делает

Dynacord is excellent gear.

Like A Job In The Town 👍

sir thank you very nice

The two types of "crapacitor" I hate the most - ROE and tantalum. All ROE caps are replaced on sight. Bang and Olufsen hi-fi liked to use them in their audio equipment. Some receivers have dozens of them. Tantalums I refer to as 'hand grenades' because you never know when one will go BANG!

very nice !

Back driving those 3 terminal regs without input voltage could cause them to be damaged,unless the circuit has a diode between in & out.