Loved how the saddest piece of music in history (Adagio for Strings) started playing when you fixed the power amp! That was a very impressive fix and requiring the patience of a Saint. Top work Mark! 😊

I've seen many of Mark's excellent videos. But this is by far the most insane and impressive one. I got the shivers by only watching it. Mark's sheer dedication is absolutely mindblowing.

Clicked on one of his videos a week ago, and now it's like a daily soap opera !!! This guy has some serious serious test equipment !!

@DalmaTon-Records

Жыл бұрын

Yes, he has, and he's awesome technician, too. And when serious test equipment in question, you may look at the channel called Mr. Carlson's Lab, when he sits in his small booth full of test equpment it looks like he's sitting on an apollo 11 spacecraft, for me at least. Especially his older vids because he rearranged the gear and moved it in a bigger space in the newer videos, but he still has a very very impressive collection of equipment... Cheers!

I'm not interested in electronics repair, soldering or circuit plans at all. But watching you work (from Germany, by the way) with your positive attitude, patience and love for the challenge brings me in a good mood. (Excuse my bad English, but I think you'll understand.) I wish you the best, sir.

@chapman9230

Жыл бұрын

I agree.I have a degree in physics and solid state electronics and I am a patent attorney. I like to repair things but this guy is at another level and it is addictive to watch.

@karenl.9234

Жыл бұрын

Your english is better than a lot of native speakers

@ChishanFipz

Жыл бұрын

He's also a really grounded individual, nothing phases him - not even a huge zap of a rather large capacitor. Just laughed it off ...

@christianreichelt824

Жыл бұрын

@@ChishanFipz Maybe a zap doesn't phase him because he's GROUNDED?🙃(This is not electrical advice!)

@christianreichelt824

Жыл бұрын

@@karenl.9234 Thank you, that's nice of you to say!

Mark is always smiling. Enjoy watching you buddy. I have a laugh every now and then when you animate the repair process with a little sarcasm.

Unbelievable! soldering that small ic took some skills! Great work Mark!

Markyou amaze me how you tear into these things like you actually engineered them. You definitely listened in class.😂😂😂. You are an electronics genius.

I'm not into electronics, but you take us on a journey with your videos. Brilliant entertainment 🎉

This was really good to watch, thank you. I used to make simple repairs of basic stuff (like a loose wire, blown driver, broken component etc) but even on old school through hole stuff my hand isn't really steady enough. How you manage with tiny surface mount components is amazing...!

Brilliant radio bloke and obviously loves fixing radios.

Great job - looked incredibly fiddly! I'm amazed and pleasantly surprised you were able to get schematics.

@ecc84

Жыл бұрын

The thing i've found with Roberts radios is the schematics are often quite freely available.

@user-il4fh9pu4k

3 ай бұрын

@@ecc84 would you happen to have one for the Roberts Revival iStream3, the all sing all dancing model..?

@ecc84

3 ай бұрын

@@user-il4fh9pu4k Afraid not, that's one of those new fangled digital pieces of rubbish... bring back the old analogue radios way easier to repair.

Fantastic video. As an old school repairer I'd probably have been able to get the cover off and no more! Bring back OC44 s (not really but yo see where I am) well done getting it running

So much patience and I admire Mark's ability to work his way through solving the problem. Like many of the other comments on here it is an enjoyable watch and I wonder how many pieces of equipment end up in the bin because they do not get repaired. I guess the time element is a large part of the cost equation for a repair.

@lw2978

7 ай бұрын

That and the expertise and masses of equipment required-Mark has some serious knowledge and electronics available to him. Kudos to people like him out there who can bring these devices back to life and help prevent further landfill.

Hi Mark, just wanted to leave a quick hello. I really enjoy your videos. Lovely format. Professional service packed in a way an amateur or hobbyist can understand and enjoy. Keep smiling and I look forward to seeing much more.

Seeing the Roberts Radio takes me back to when I found an immaculate tan-coloured one of these on a Council Tip in 1966. Obviously not DAB back then! My father was much like yourself, and he quickly diagnosed why the Roberts didn't work. He also got the Oscilloscope out! Even though 57 years have passed, I still remember that the radio had a faulty Oscillator Coil, and this was a Weyrad P50 /1AC. Coil was replaced, and I'm sure that it didn't fail again. I moved from the UK to Australia, it "got lost" in transit. I am always amazed at how easy you can fix almost anything electronic. This has been a lifetimes' hobby for me, and I "have a go". If I exhaust my knowledge, and cannot fix anything, it goes to the Tip. You need an Apprentice!!

I found your channel by accident and despite not having much if a clue about electronics, watching is addictively fascinating!

You, my friend, are a genius. You do wonderful work and are very knowledgable. Pleeeeease post more repair videos of modern electronic equipment. And explain as much as possible. Thank you so much!

@MendItMark

Жыл бұрын

Thanks! The next video ( still in edit) is indeed more modern. A 4kW level switching amplifier, all on one PCB!

@zimbab5748

Жыл бұрын

@@MendItMark ah man I can't wait to see your next vid! So many questions for you! I live in the Caribbean, so electriconics get destroyed and there are no parts and no experts. You are a wonderful inspiration for tackling these jobs and making it happen. All the best, Dax.

I used to love repairing the odd item yrs ago & make amps & light shows etc in the early 80's when you could pop to maplins ( or bill flemmings) buy what you wanted & shove them onto copper strip vero board and actually see the components..... fast forward to today, there's no way i could or would tackle the kind of repairs that you carry out. Well done mate 👍

Amazing repair fixing that DAB radio! And an excellent tutorial on tracing the faulty bits as usual😊 Thank you for your excellent videos!

You're an inspiration, I would have probably given up on this, but you prove time and time again that it is worth persevering!

Love your work, and your banter! Thanks.

The most instructive and engaging repair vids I've seen in ages!

This guy knows his stuff, I know nothing about electronics but enjoy your videos.😊

This guy has a god sense of humor and loves what he does!!! Keep it coming M8!!! Love your work!!!

I know I shouldn't but each time I see that clip in the intro of you getting a shock cracks me up every time. I think it's your reaction afterwards!

Really enjoyed watching that. Look forward to more radio fixes.

Awesome fix Mark! Happy new year!

really fantastic soldering on that resistor. you make it look easy!

Great video. You have the steady hand of a surgeon.

You are a genius! What a talent! You never give up! Best channel on KZread. Your Channel views are going to go through the roof! I just discovered you! Love you approach to repairing items and life!

@marcse7en

Жыл бұрын

Yes indeed! ... With the state of the World today, life certainly needs "repairing!"

@SlartiMarvinbartfast

Жыл бұрын

@@marcse7en Perhaps we could get Mark to fix all of our broken politicians and self-serving people in the media.

@marcse7en

Жыл бұрын

@@SlartiMarvinbartfast Well, Mark is talented and seems well able to repair just about anything, but there are limits! 🤣

The best service man I have ever seen on the tube, thank you for your fabulous work and help

great to see such knowledge and expertise,

Very impressive work! I don't think I will be attempting this repair myself though those chips look incredibly small. For anyone in my position Roberts are one of the few manufactures that still offer a repair service.

Great work. Nice work shop. I enjoy your videos.

Very fiddly work skill fully done. Great content.

Bloody brilliant mate! Nicely done...

1:57 - If the aerial has a little screw at the hinge point (rather than a rivet) then you may be able to undo the screw, take the telescope off, then a regular deep socket should allow you to unscrew the base. Great SMD soldering skills, I think I held my breath for the whole duration of the TPA2005 installation!

@GodmanchesterGoblin

Жыл бұрын

Just use an 11mm box spanner passed over the whole aerial. (All Roberts DAB radios with removable aerials use the same size.) Obviously you can't use a T bar to turn the spanner conventionally, but even putting the bar into one of the holes by a few mm will be enough.

Wow just wow...Both of us watched you fix a Peavey power amp that was absolutely fubar, and then you did the fiddliest of fixes on this...Amazing! All the best! ;D

Open mouthed, lock jawed, bated breath aaaaaaaaand REWARD for EFFORT - well appreciated (been there, tried and failed all too many times) - salute to you sir --- old git, UK

Fabulous to watch! Reminds me of Fantastic Voyage, where a submarine goes into a persons bloodstream. Working with surface mount components is truly micro surgery!

I’m so jealous of your skills I’ve been watching your vids for a couple of weeks your a master class and such a smiley face too … thanks for the vids

Mark again a very interesting video of a fault finding and comedy really cheers me up, keep up the the good work Mark

Your amazing! Surgical genius, a Pleasure to watch!

Great repair job. New subscriber. I'm hearing about sound-bars failing all the time because of these pesky class D amp chips handling so much more power than you'd reasonably expect from them

I've mended lots of devices but given up with surface mount components. Thanks for the demo that it can be done!

Another type of technology secured! Well done!

Great job, great communication.

Fantastic job, sir. I'm always impressed when 'a plan comes together'. (From one of your latest, if not THE latest, subscribers. 😉)

I was watched your all 44 video Because you are best about electronic repair channel in youtube.You have great knowlodge and great patinence too.

Just want to say thankyou for the video, found it when i was working on my Mums RD60 where she had used the wrong power supply and blown not only IC11 but IC8 and the amp IC4. i used your method of mounting a LM3475MF Upside down and changing the Feedback network resistor. working perfectly again now :)

Incredible, I admire your steady hands, lol

Excellent informative video. You really are very good.

You good sir, deserve at least one medal. Great video as always, love your content

What a brilliant cheerful technician keep up the good work bro.Anthony South Africa.New subscriber❤❤

Your a happy chap..can’t work out if it’s a nervous smile or a genuine ‘ I’m so happy’ smile. Anyway, very good repair, most may just throw that radio away. You have a new subscriber. It’s a thumbs up from me 😊

Mark! You are the most cheerful genius I’ve ever seen! 😁 My (blue) Roberts radio, similar model with back access won’t switch on either…. Maybe you do repairs?! Thanks

Thanks for the video, I repair radios but that was above my pay grade. I have subscribed regards Mike

Love watching your videos! I too am an Electronics engineer and feel your pain with smd components, but I have to deal with hand soldering 0201 packages, like bits of dust!!

That,s are good build quality radio,s , ROBERTS radio are very good , greetings from Assen in the Netherlands !

Awesome repair and guide, I've got 2 of these from my local repair cafe and both exhibit the same issues as yours (well PSU for sure but I bet the amp has gone too). Now to purchase the parts and emulate your rework!

Oh my aching eyeballs Very nice work & a "good save" as this would have certainly bin tossed out. It's really one of the nicest ones I've seen. And probably the last of the 'repairable' ones that we will see moving forward. But don't let that go to your head. Cheers from So.CA.USA 3rd House On the Right.

Those Class D chips can be a nightmare to replace. The whole underside is a heatsink which has via's to the other side of the PCB which require large amounts of heat to remove and replace them. It's amazing they work at all considering how much heat has to be applied to them. Your inventiveness with the 5V chip was quite entertaining. Not sure I would have gone that far but hats off to you for not giving up. Great Video.

@TheOptimod

5 ай бұрын

Hats off?

When you clean with that paper.. God it reminds me of 1970s school toilet paper!

Best what ever I have seen ! Iam from Germany und my English is not good, but Marc is the Best of World electronic Man !!! Thankyou for many Videos !!!

FLipping the chip upside down. Brilliant. Like swapping transistor legs around.

I had some issue on a high serie car radio. It had 6 buck/boost converter, wich failed. Despite all researchs and investigations, despites voltage simulation I failed with the troubleshooting. So, this is here an amazing win.

When used to work at a lever company I used to make all those handles for the Roberts radios. The sewing machine with two needles, use the stitch at the same time.

Your a genuis , another great job

If you started an online course in how to repair stuff I would GLADLY be your first student.

Great video.

great job mate

Bodge is also called a Kluge as per my old engineer friend Herb Gass. A brilliant electronics guy and mathematician who I respect a lot. We had a Brit family living int he neighborhood so we know the word Knackered... which birthed the term Knicker Knackered when something is in a screwed up state or in disrepair or just plain NFG. Good repair. I might have used a digital switcher regulator in the 78xx family... they came out with switcher versions and then put them in small SMT and micro packages which would have worked good here with three wires and no reference resistor. IF you need to adjust a regulator that attaches to ground, put diodes in series with ground and they will adjust themselves accordingly. .3 schottky .7 Silicon and add to make different combinations.

Amazing camera.

Hats off to you Mark for your skill and tenacity. Your natural ability to sniff out where the fault might lie (often in the absence of a diagram) is wonderful. I'm in the 'game' too (in Sydney Australia) and most often manage to repair stuff others have given up for dead. But one question: I see you using the heat gun to desolder (and resolder) chips and stuff. And you seem to hold the hot iron on to joints for a relatively long time. Aren't you worried that the heat will destroy or weaken the replacement parts?

@TheOptimod

5 ай бұрын

Hats off??

Wow class D anplifier in a Roberts radio. They have gone down hill.

Nice repair Mark - SMD's....Hmmm, I can usually manage the polarised cap's but the other devices drive me nuts and I often damage the tracks when changing them ! I have an illuminated magnifying glass but your microscope looks marvelous.....

when I was young I repaired tv sets, now I am retired and sometimes still fo some electronic repair , I was vice president of quality in a american electronic company , the problem is that today you need a lot of stuff to repair products, also spare parts are not always available , therefor many products end in the garbage . nice lab you have , regards from mexico

Great job designers, all that space left in the box use components so small an ant would have trouble repairing it. I think all designers should spend a week using and repairing the things they design before they are released in the public. Crazy. Basically unrepairable unless you have these skills and equipment which I doubt many have.

great job

Just amazing 😍

The Music you were playing was Adagio for strings by Samuel Barbour. I only know that because my mother used to play it. That was a trick fix, with all those cans plus surface mount components.

Just found your channel, Mark. Great stuff. Any thoughts as to why both chips failed? Roberts used to be famous for using centre pin negative power supplies with no reverse polarity protection. A lot of radios were destroyed because of this. I can see that this one is centre negative, though.

24:34 - Adagio for Strings by Samuel Barber "a bit dreary"? This is one of the best known compositions of the twentieth century and has been recorded hundreds if not thousands of times! Seriously Mark that comment is sacrilege. The good thing is it has prompted me to listen to one of the many recordings I have of it. I love your channel. A shite radio coming to life at your hands and this piece being the first music it played when repaired is beautifully ironic =).

You’re a genius ❤❤❤❤

Great video, love to know how you got your hands on the schematic, I’ve tried everywhere without success.

Some great ideas on working with SMD components in this video! I need some flux like you ar using; can you share the brand/type? The stuff I have on hand is either too runny or too thick.

1:04 wow!!! that's a new one on me for such a recently made product!

Wow, all that work to get it functional again! I might have the same problem, no idea as I don't have the tools to investigate (or the know how), but if it is the same problem, looks like my Radio will remain dead.

Fantastic. Apart from "Rylan on Saturday" which made me feel sad.

What a beast of a scope that Tetronix is, Even though it’s old by today’s standards, I bet it cost an absolute mint when it was released

Mark would have a giggle if he blew his arm off. Love his video

I have experienced failures on 3 different DAB radios - which appear to be due to controller chip issues. Not sure if I have just been unlucky or if this is a common problem. The issue I have seen is where certain control buttons cease to work altogether - such as the volume, menu, station presets. This doesn't appears to be physical failure of the button(s) but rather of the electronics recognising that the button has been pressed (or rotated for the volume). In all 3 radios multiple buttons stopped working at the same time - and with 2 of the radios the button failures were progressive until none of the buttons were working. Essentially you end up with a radio that is frozen on whatever station and volume you last selected - with all the controls locked and unresponsive. Initially removing the power often unlocked the controls but in all cases this ceased to work after a few days. The radios were 3 different brands - the oldest being a Roberts RD-25, the next a John Lewis branded Aria II, and the most recent a Pure Evoke H3. The last two I suspect may have the same type of controller chip and or firmware (the LCD menus are near identical). Anyone experienced a similar issue with DAB radios?

Visited a recycling place some time ago they were throwing pallets of DAB radios in the granulator. As you would expect they watched you like a hawk in case you rescued one. Shocking waste.

It must only be a mono output with the one speaker. Far easier to replace the amp or 5 volt supply section with another mini d class module from eBay. Those amp chips need another blower or iron on the reverse of the board as well. I would have been wary of an intermittent fault in the wall block. And they are difficult to cut open and not safe to glue back together. Well done for having a go and saving it from being junked.

Ha, ha I found one of these a few years ago abandoned on the street... I thought it would be an easy fix. So at a couple minutes in to your video, I began to remember and those little tin boxes were a pain, the whole thing was a pain. I had the exact same fault.... Now I'm going to watch you do a much better repair than I did.... Then comment at the end... You are just bodging the buck chip which I did a similar thing, expecting it to jump back to life.. there was another chip above the display...I remember was also knobbled... Ok back to vid...

Hello there. Love watching your video's that you post. Do you carry out repairs for people? I've got a similar radio and although it powers up, I don't get anything on the lcd screen.

Thank you for the video! I have never seen a DAB receiver before so this video is very interesting for me. How high is the ratio of DAB receivers compared to AM/FM receivers? In Japan, DAB is practically not used in the reality (on the other hand, DVB-T took the place of NTSC perfectly).

Fair play that’s some seriously impressive work. I’d be buying a new radio 😂

Wish I was located near you , I need. A technics su v95 amplifier fixed

Amazing