EEVblog

[@mikeselectricstuff]

Big round can thing is a SAW filter for the receiver IF filtering - very common in TV receivers

[@spikester]

Was very common in older VHS/Betamax machines as well. As a kid I ripped the can off just to look at the fascinating layout underneath.

[@Graham_Langley]

Amazed Dave didn't know what it was.

[@pvc988]

I've seen exacly the same can in few JVC VCRs and I always thought that it is some kind of transistor or IC.

[@Graham_Langley]

+pvc988 That can is quite distinctive. You'll see them, in a smaller low-profile TO-5 transistor can, used in decent 418/433MHz and up RF remote transmitters.

[@MRooodddvvv]

yep ! it's 38MHz IF filter and small black bloby thingie is 6.5 (5.5) MHz sound IF filter. and BTW antenna not going there it's going into metal can on the other side with coils in wax

[@RandoYoutubeViewer]

the engineering on this thing in the later 80-90 is fucking incredible this is crazy crazy crazy complex and original for the time it really mind blowing

[@zrobotics]

Even though products are vastly more complex/feature rich these days, it seems to me that engineering has gotten much easier. Rather than design from scratch a mechanical tape drive to fit the space, you can just use off the shelf components to interface with solid state storage. A modern smartphone has all the capability of this device and more, but it seems to me that the actual design of the product is much easier. Plus, CAD tools are so much better, it's staggering they were able to design the product at all, much less make it manufacturable.

[@mikeselectricstuff]

Some early colour video LCDs used analogue LCD drivers to avoid the need to digitise the signal.

[@zaprodk]

Yeah, that LCD is analog. Too much "analog" stuff happening on the LCD-board and not a single DAC in sight.

[@kyoudaiken]

Interesting. Also converting it to digital will create delays.

[@godfreypoon5148]

+BloodySword ... mostly in the R&D office.

[@spikester]

These engineers were geniuses who came up with helical scanning on magnetic tape. Such amazing engineering.

[@EEVblog]

Indeed.

[@kyoudaiken]

For me it's common sense. :D

[@spikester]

It's all in the execution, how they were able to do so much in the pure analog domain is perplexing. The timing of the heads, delay lines, tracking, the mechanical aspect and how it recreates the analog video signal with the precise timing for the TV its being played on.

[@kyoudaiken]

spikester Yeah. Today it's much easier. You convert the signal to digital as soon as possible and then everything is just code in ASICs or FPGAs...

[@locouk]

I wonder if Techmoan has one?

[@s8wc3]

no but im sure he has a tefifon walkman

[@JesusisJesus]

My parents were either sales-man suckers, dyslexic or cheapskates coz we had a fuckn SANYO BETA VCR and they bought me and my sister SANYO Walkperson Portable Cassette Players. Fuck you Sanyo for tricking so many 80's parents into buying your half baked shit.

[@Lachlant1984]

Sanyo weren't that bad, they made some good stuff.

[@locouk]

+Lachlant1984 Haha, But it wasn't a "Walkman" branding.. That was the thing that counted as a teenager, the name. These days the Walkman name would be banned for being un-PC, in that not all people can walk and not all people have a male gender, and people including straight males would insist they weren't a man lost to be awkward.

[@JesusisJesus]

My parents were and are cool as, they got tricked by brand name fuckery, like every dope who buys a Palsonic or Suny TV from K-Mart these days, it's just cheap shitty knockoffs of the better quality product.

[@shelvacu]

"It's upside down, all the electrons are gonna fall out" I keep thinking this joke will get old, and it may, but it hasn't yet. (for me)

[@bobweiss8682]

Great video! You should pull out the video head drum assembly and tear it down, as well. Contains a 3 phase brushless motor with several hall effect sensors and pulse generators for servo feedback, and a multiple winding rotary RF transformer to get the signals to and from the rotating video heads. Plus a bunch of high precision bearings and machined parts.

[@the_eminent_Joshua_E_Hrouda]

Bob Weiss or a Sony Scoopman NT digital audio cassette notetaker!!! 1993 uses a MICRO head drum!

[@Seegalgalguntijak]

I missed the words: "It's a DSTN passive matrix LCD, none of that modern TFT rubbish!" ;)

[@vanhetgoor]

And now be a good boy and put it back together!

[@kyoudaiken]

Yeah, wanna see it work and what's on the tape. :D

[@IvanKowalenko]

He has a link in the video for that, at the 5 minute mark.

[@Mukeshmiktecrep]

I loved these old machines .......... So robust and strong manufactured.

[@Phantomthecat]

I feel old now Dave - when you were explaining the tape path and head I was thinking 'everyone's pulls dozens of these apart Dave, no need to explain it' then I realised that maybe the current generation of hobbyists would probably not have done this like some of us used to. :). Another great tear down.

[@shmehfleh3115]

Gotta love the Sony screw arrows. I recently replaced the belt on an old Sony linear turntable, and thanks to those arrows, I didn't have to guess which screws to remove to just open the case.

[@JesusvonNazaret]

i have no words to say how much i miss those days

[@whitcwa]

Thanks for the trip down memory lane! As a broadcast maintenance engineer, I've worked on almost every videotape format from 2 inch quad to HDCAM-SR (Sony HD production format). This was an engineering feat, but it was an incremental one. There were two generations of helical cassette tape before this. Umatic used 3/4 inch tape and VHS/Beta used 1/2 inch tape.

[@pmgodfrey]

I bought a similar one in high school to take on a choir trip (think it was a GV8...maybe). Had it for a few years but never really used it much. No idea what happened to it. I had a case that held 6 'AA' batteries to power the unit. I'm thinking it was around $850??? About the same price as the Sony MZ-1 Minidisc recorder that came out a few years later. Had to have that too. Loved that thing. Got more use out of that than any video walkman or cd player I had at the time.

[@zaprodk]

The "unusual" can in the RF-frontend is probably a SAW-filter.

[@EEVblog]

Ah, could be.

[@electronash]

Definitely a SAW filter. ;) html.alldatasheet.com/html-pdf/411398/PETERMANN/F1034/484/1/F1034.html Those big round TO-8 packages were quite common on SAW filters in VCRs and TVs in the 80s / 90s.

[@pmgodfrey]

Oh, and Dave...stop collapsing an antenna like that. You're supposed to push it in from the bottom, not push it down from the top. That's how antennas break.

[@EEVblog]

Blah!

[@electronicsNmore]

It was unintentional. He was getting aroused by the IN/OUT motion of the antenna. LOL

[@AMalas]

+EEVblog I cringed having broken 3 ultra expensive RC proprietary antennas.... cost a pretty penny...

[@AMalas]

***** what!!! Why wouldn't he? Does he just throw away these classics?!

[@AMalas]

***** I mean he could totally do a giveaway if he doesn't want it! Many would appreciate a nice piece of the past!

[@JesusisJesus]

That LCD was a work of art. The whole this is amazing as well. Jeez.

[@МиланПавловић-ф3т]

Ladies and gentlemen good evening and welcome to show "Void warranty with Dave" :)

[@redsquirrelftw]

What's incredible to think is that stuff did not really get simpler, just more compact and integrated. A lot of that circuitry can now fit into more purpose built ICs and take up less space. Incredible really. We went from big vacuum tubes based devices to this, to even smaller.

[@DextersTechLab]

Nice teardown Dave! Sony electronics from the 80s & 90s always prove to be interesting. This is especially true of Betacam and Betacam Digital VCR decks. If you ever see one locally, it's well worth a pickup for teardown.

[@sokolum]

Electronic masterpieces for their time... nice to see how they managed it to get it done!

[@BMSWEB]

Pretty insane engineering in that!! Amazing hey

[@BMSWEB]

Well my son watches Dave's videos like this in amazement!! This is so foreign for him, Technology is pretty amazing now that's for sure.

[@DirtyRobot]

I'm sure he might come up with a solid flight controller if he is getting into this level of enjoyment. You most likely know already, but SciShow Physics has a great set of videos on PID that might be helpful for him.

[@BMSWEB]

Haven't seen SciShow Physics but will check it out for sure. He love PID tuning so much! He has his own set of theories as to how it should be tackled. I like the fact that it's got him thinking about this sort of stuff

[@awesamhead]

I tried searching for SciShow's PID tuning videos, but couldn't find any. would you please share a link..

[@Seegalgalguntijak]

Oh, I remember when I was a kid, my dad had one of those, and I was sometimes allowed to watch something on it. It also had a big vertical bar across the screen, I think it was yellow or red, wandering from left to right, indicating the channel frequencies (if you notice the frequency scale above the screen), so it had a digital tuner and could even auto-search for a tv signal!

[@IvanKowalenko]

@4:28 AFAIK, NTSC never used delay lines. It didn't need them, since we didn't do the phase alternating on our color signals, thus we never had the problem with Hanover Bars (which is what the delay line is supposed to compensate for).

[@beforebefore]

Brings back memories... I had a Hi-8 version of this! It was a very significant improvement in video quality over the normal "Video-8" format. The Hi-8 model was used a lot in "intelligence gathering" situations... spy camera recording. (more...) Later, when D-8 (Digital-8mm) format became available, they had a D-8 Video Walkman... which replaced the Hi-8 version for spy activities. The D8 equipment was usually backwards "playback compatible" with the Hi-8, and even Video-8 formats. D8 was VERY high quality... for its day. I even used it a few times for TV broadcast work. I still have my old Sony Hi-8 CCD-TR700 and DCR-TRV510 D8 camcorders. I also used a Sony D8 computer tape backup drive for several years... I could even share tapes between the two devices... Video work or Data Backup. The holes in the bottom of the tapes determine not only Write-protection, but tape length and tape series as well... V8/Hi-8/D-8. BTW, that large round "can" in the Tuner is a SAW Filter... Surface Acoustic Wave Filter for those not familiar.

[@GeorgeGraves]

Little know fact. For years and years the Sony Video8 recorders where the perfered "playback" device for major film shoots in the from of a a CCD tap off the view finder on the 35mm film camera). It was reliable, and just got stuck as "the standard". Many people in LA/Hollywood made their living operating them on set.

[@EEVblog]

Interesting!

[@electronash]

+GeorgeGraves - Yep, I remember spotting them all the time on the "behind the scenes" features on TV (ie. the "extended trailers" lol) I always wanted one of these mini players as a kid. Loved the design of the Sony ones with the built-in LCD as well. It would have been perfect for taking on camping trips / holidays, or to school back-in-the-day. ;)

[@blinkey6]

Dave..You piss me on.I email you and want to ring you.But you didn't reply...I started with electronics with Colin Mitchell.. Just need some info if you don't mind..Idont have your number.So what is the best way to contact you.Thx mate.

[@electronash]

Somehow I doubt he'll e-mail you now, Bill. :p

[@ChipGuy]

That weird metal can thing at 16:50 is a Toshiba F1034 SAW filter for 38.9 MHz TV IF. I am only half way through the vid but already thumbs up!

[@ArtesianFalma]

Another thing is that the helical scan rotating head uses small rotating transformers to transfer the video signal from the moving to the static part. Real nice piece of design.

[@escwire7755]

There were similar units for mini-dv too. Used some times for filming with a hidden pinhole camera or filming action sports with a small camera on a helmer with a cable to the recording unit in a backpack or pocket. The Days before GoPro...

[@electronicsNmore]

Amazing how we were practically living in the Dark Ages with respect to technology going back only 50-60 years.

[@mikeselectricstuff]

That display is transmissive, not transflective - TF displays are used where the backlight can be turned off for use in bright light.

[@jakp8777]

Dave, are you going to put it back together?

[@Keith_Ward]

My guess is that he throws it out afterwards but who knows. It would take quite a bit of space to keep his own museum.

[@Arilith]

It's already wednesday here in the Netherlands, but like your teardowns, keep it up Dave!

[@marvintpandroid2213]

Hi Dave, portable DVD players came after this, Pioneer provided a couple of dozen to Eurostar for people to watch on the train to and from Paris and Brussels.

[@Bluebrain]

I owned one! It was an xmas gift and I loved this thing! Like a quantum computer now back then. I made an extension cable for the screen and used it to watch movies in school! :D

[@aveservices3052]

Back making Videos already! Hope the legs still doing well, been watching on eev2. Top job!

[@12voltvids]

That unusual looking metal can in the SAW filter.

[@KennethScharf]

I remember having to choose between VHSC and 8mm. We went for the VHSC because it was playback compatible with standard VHS. OH, glad to see you're back on your feet, so to speak (at least not int terrible pain).

[@EEVblog]

Still not that easy to stand at the bench and sit down at the editing computer all day.

[@hakemon]

Rest up well Dave! I always enjoy your videos and will wait patiently. Your health is quite important, and thanks for keeping us involved throughout the process. You rock!

[@sirp0p0]

Spinning the head and yelling "Woohoo!" really cracked me up more than it should have.

[@walts555]

Amazing how they jigsaw-ed all that together with the limited CAD of the day. I can imagine many, many cabinets of engineering drawings and other docs.

[@tmdcbass]

I love those envelope designs. It's so intricate.

[@lisforlucas2453]

Had one of these in the day....... brilliant technology beautifully made, and $2,400 from memory. The battery lasted around 1 1/2 to 2 hours and it was followed up by a stereo version with a larger screen similarly priced. They were a flop in Australia - Everyone i showed it to (and that was many, I love show and tell) were amazed and had never seen anything like it before, It was about the only attempt at portable video until the rise of the personal DVD player - due mainly to the fact you could buy a reasonable used car for that at the time....

[@palipixel]

@ 16:48 : Sony was a big user of SAW filters in the ~45 MHz TV IF circuitry, since at least the late '70s, at least in miniaturized sets. Saved lots of time, parts and board space.

[@jero37]

The Virgin Atlantic comment made me think of the scene from the first Tom Cruise Mission Impossible movie, the scene from the plane the flight attendant asks Ethan if he wants to watch a movie, she has a big bin of tapes & next to Ethan's seat is something that I recall looking distinctly like this unit.

[@JasperWaale]

Use to get that with tapes on 1st class flight in the old days, had tape wrap up on the head 3 times on one flight until the run out and I had to pick new film

[@Matt_Aquila]

Funny you mentioned Virgin Atlantic used these. I actually remember having to use one on a flight between LA and London in 1993 because my in-seat screen was dead. Worst flight ever, battery was terrible and flight attendants weren't interested in replacing it.

[@bpa5721]

This brings back memories of the time I used to work in Panasonic VCR mechanism production.

[@EvertvanIngen]

"It's a Bobby Desla " What does that mean? " We'r in like flin " What's a flin?

[@the_eminent_Joshua_E_Hrouda]

Evert van Ingen Bobby Dazzler (Aussie/Pommy term). In like (Errol) Flynn (Aussie/Yankee actor). Google them :)

[@andreacerfoglia8007]

hell yea! dave still up and running!

[@geovani60624]

my dad have said that these auto clean of the head was one of the best things that happened for him the time he worked fixing vhs, these things aways mess the head and they clean them to wait for the guy come back a few mounths later to clean again

[@stridermt2k]

I worked with Sony's video recorders in the mid-90s to mid 00's building surveillance gear. Later stuff than this but a pretty good variety of this stuff and Panasonic's VHS stuff dovetailing into early digital and DVD recorders.

[@mikeselectricstuff]

ISTR reading these were popular with certain government agencies for surveillance uses

[@TigraMatician_]

Perhaps "I Seem To Remember"

[@wdavem]

Great video! I have the stereo version and I used to use it for audio only... as an audio walkman! Sound quality was really good and it even had index search that could be controlled from a backpack with a remote if I remember right. I jammed a much larger battery onto it also. Got it used with a dead pixel but it still cost me everything I had as a teenager; Guess I really hated audio cassette sound! Video walkman sounded almost as good as a CD, of course this is analog FM helical audio. Sadly the outer surface of the case turned to some kind of urethane goo- it's a real mess.

[@johneygd]

This thing was 1000 years ahead of it's time in 1989, if you owned this thing at that time,you become the king of that era.

[@ckuhn5555]

I knew I had one of these GV - 9, just found it in stored away box. I have over 200 Super 8 MM movies that I intended to watch on this. Found a Super 8mm VCR playback after the GV-9, so this one is like new. Amazing fun ahead.

[@jasonlister4857]

its a SAW Filter if memory serves me correct. SAW (surface acoustic wave) filters are electromechanical devices commonly used in radio frequency applications. Electrical signals are converted to a mechanical wave in a device constructed of a piezoelectric crystal or ceramic; this wave is delayed as it propagates across the device, before being converted back to an electrical signal by further electrodes. The delayed outputs are recombined to produce a direct analog implementation of a finite impulse response filter. This hybrid filtering technique is also found in an analog sampled filter. SAW filters are limited to frequencies up to 3 GHz. The filters were developed by Professor Ted Paige and others.[3]

[@randycarter2001]

Are the fine tracking adjustment guide pegs loose? (The 2 moving ones with the screwdriver slots on top.) This transport has a long history of the pegs coming loose and shifting up and down at will. Sometimes they even fell out completely and rattled around inside. I've repaired a lot of these things. This transport was used in every Sony 8mm product for several years plus Canon also bought Sony transports to use in their products as well.

[@gorillaau]

NTSC: Never The Same Color

[@IvanKowalenko]

PAL: Pay for Additional Luxury

[@gorillaau]

PCMCIA: People Can't Memorize Computer Industry Acronyms

[@SirHackaL0t.]

I used one of these on a Virgin Atlantic flight to Florida back in the day.

[@samsmith1580]

Great video. I love these 80's tek tear-downs. Technology in the 80's and 90's was exciting. Everything had tons of buttons and every button had a purpose. I lusted after one of these when they came out. Very expensive though. I think it was the portable DVD players that took over from these things.

[@solarwind75]

Usually there is 3 dc motors in a tape mechanism, a dc brushless motor as the filter thing with the tape film rapped around it, another dc brushless motor as the thing that makes the tape wheels turn making the tape film go from one side to another, and a dc brushed motor making the arms that pull the tape film to the filter motor thing move. take apart a modern VCR tape player with the large tapes and you will find this motor set up. Usually the filter motor thing will have 2 holes on the side instead of 4. This is my moms account I am using.

[@kieferonline]

This device is absolutely incredible. I love this type of AV equipment. I wish I had a working one now. I love having all those video in and out options on analog. Everything is on lockdown these days. How in the hell was stuff like this designed? I can't imagine they had CAD software yet. Seems like a bunch of late nights. As for the product following this one, I bet it was a Japan-only minidisc affair. Great video, Dave!

[@nickkinnan7485]

Wave soldering isn't common any more except for low priced stuff? What's used instead? Reflow?

[@SuperSamLowry]

Remember working with one, was a Hi-8 version for a job I did in late 2002 and had to feed an Elmo/Sanyo miniature camera into it. Was a pretty amazing little deck I thought and a beautiful design. Remember it was expensive over £2K UK at the time, I nearly bought one for work use as a small portable recorder however was worried how long it'd last? Plus servicing would never be easy or cheap and you can see why. A marvel of Sony design though.

[@sal4]

Now I want to see it back together :D Great video, thanks!

[@bratina501]

As I recall Sony replaced this model with the GV-200 and GV-300. The GV-300 added stereo to both the TV tuner and also to the tape! Not only that it would also record in stereo as well. But these have a serious problem with bad capacitors and many of them can be found either dead or with greatly reduced functionality.

[@JohnDoe-qx3zs]

I wonder how many of those parts and subassemblies were reused or adapted from/to other portable gear. Such as camcorders with the tape mechanism in the camera, small CRT TVs with the tuner jammed in to a corner behind the CRT, Betamax VCRs etc.

[@Zadster]

The metal can @ 16:40 looks an awful lot like a Surface Acoustic Wave (SAW) filter. Hence the component designation SWF101. If you manage to get a repair manual for this, I'm pretty sure the internals of those chips will be explained, engineers ran product development at Sony back then, and they REALLY knew how to put service guides together. Amazing manuals, nothing quite like them, the absolute dog's danglies.

[@EEVblog]

I should have looked at the designator!

[@scottfirman]

+Gerald Musy I was going to add disposable buy you did. Now days if you buy an electronic device they include a slip of paper state not to return it to the store,instead they send you a replacement and tell you to throw out the bad unit. They dont even want it back. I had one place ask me to cut the cord at the source and mail that in to prove I did ( I think they measured the length of the cord to make sure you cut it right). Then they sent a refund stating they didnt want the whole unit. It was a recalled item. I took the back off,added a fuseable link ,soldered in a new cord and used the damn thing for three years before it finally actually failed.

[@Zadster]

I'm not sure where in the world you are, but in the EU since 2002 (extended in 2005) the WEEE regulations impose a responsibility on the manufacturer to have to take back the equipment at the end of it's life, and dispose of it responsibly.

[@nplanel]

I would guess the shield is here too keep/protect the signal integrity of the small signals under the shield, as the drum motor is just next to.

[@AdamAus85]

Woah, tape mechanism is beautiful

[@joesmith706]

noooo I have been looking for one of these forever!

[@squidcaps4308]

RF tuning circuits are like works of black art..2 loops of copper, random space, 2 loops and end jotting out in some odd angle that would take a supercomputer to solve that equation but is done by a medium level factory worker, several units per hour.

[@Fedaykin24]

Unbelievable! I had a go with one of these in 1989 as a 9yo boy. My mother had a friend at a school she used to teach at, the friends husband was employed by Britain's Ministry of Defence working in their sneaky sneaky electronics department. They lived in London and we would go to stay with them every once in a while to play with their Children who were about the same age. The husband would often bring home cool new technology as long as it was not top secret from the MOD. One weekend he brought one of these home (to record a family Christening) and I remember being allowed to record video with it. It came in a leather carry case with strap and you plugged in the video camera with a cable. The camera was smaller than a modern camcorder fitting neatly into the palm, to this day I thought it was rather clever. The same weekend we rented out the new Tim Burton Batman movie and used this to create a copy onto Video 8 then back onto a VHS tape for us to take home (naughty but rather clever). There was no real quality loss and the earlier rentals didn't all have the copy protection you would see later. Thanks for the memory!

[@JohnnyMotel99]

You must get a DigiBeta to tear down, same mechanical tech with helical scan but all 1's and 0's. They are quite simply an engineering work of art inside. It was probably also the height of Sony tape tech before solid state memory took over.

[@CatsMeowPaw]

I remember see this device on display in 1990. Over AU$2000 (probably $4k in today's money). I was astonished by this device and desperately wanted to have one at the time.

[@dariuszadamus5693]

This shield at the end of video not connected to ground is for magnetic field. Does not have to be connected.

[@jrmcferren]

The video walkman was around for quite a while, into the 2000s at least. Formats supported included Video 8, Hi-8, Digital-8, MiniDV (Standard and DVCAM) as well as HDV (High Definition). The tuners went from what you see there, to Cable ready to external sidecar and later no longer an option and it appears the later versions of these machines were designed to be used by professionals and even used, the HDV versions run over $500 one eBay. Many companies have tried to use camcorder formats in home or portable VCRs. Radioshack: Video 8 in a 5 inch color tv portable Sony: Video 8 Home VCRs, Hi8 Home VCRs, MiniDV Home VCRs (all with tuner), the video walkman as well. JVC: Combined MiniDV/S-VHS home VCRs. There are probably more examples out there

[@EEVblog]

Yeah, I think they failed in the general market, but were fairly popular in the professional market.

[@pmgodfrey]

Definitely in the professional broadcast market, but they were completely different designs. Most of the broadcast equipment I've repaired in the past used separate boards that contained things like TBC, inputs, video processing, displays, transport, etc. One of the other differences was the interface. Consumer gear used RCA jacks while broadcast used BNC. Still surprised at the HDMI adoption in the marketplace. HD-SDI would have been a much better standard. It's better anyway.

[@ChipGuy]

Hmm you didn't show that long canned bar thingy on the side of the LCD, that is connected with 3 wires to the board. My guess is that these are a bunch of buttons. Each one connected to a different resistor so you can decode the buttons usind an ADC. I have seen that in a Grundig TV once.

[@AgnostosGnostos]

Analog technology of the 1980's demanded mechanical components. The mechanical components are vulnerable to gradual wear. And since the lubrication or replacement of gearwheels, springs, elastic belts etc was impossible by amateur users the failures were just a matter of time. The 1980's was a very romantic time for gadget lovers. Today we have in digital what pioneered in 80's. Except the internet very very few things are doing something new today that couldn't be done in 80's by rich consumers. (Mobile phones, mobile pocket computers, mobile PCs, mobile VCRs, tv watches, computer watches, mobile TVs, etc)

[@IDoNotLikeHandlesOnYT]

What's the long dark thing with many pins flopping off the left side of the display, seemingly only connected by four wires?

[@roberthorwat6747]

Ohhhhh man when I clapped my eyes on one of these back in the day I was in AGONY!!!! I was in love and I wanted one like AAAAARRRRGGHHHHH!!!!!! Sadly couldn't afford one but what an object of desire. Beautiful!

[@OsmosisHD]

@13:44 Now that's some very very precision engineering. Brilliant

[@famillePuces]

Hi Dave, nice video. I would be interested in knowing a little bit more about the tuner and the techniques that were used in that design. Thanks!

[@scottfirman]

I loved that technology back then. Funny as I sit here and watch this on a device that is flat and takes up hardly any room. just amazing. What went into those was nothing short of pure awesome. What would you say is the most important thing that changed technology from then to what we use today?

[@nekomasteryoutube3232]

This thing looks like that back in the day and maybe even now could be used as a Portable TV and be used at home as a TV on its own or as a Video-8 VCR, sorta like how a Regular VHS style VCR would be hooked up to a TV and used for playing VHS or changing the channels.

[@DAVIDGREGORYKERR]

I don't think that I will be opening my Video8 camera to see what's inside.

[@antsgamingvideosn2b]

Sony later came out with MiniDV based Video Walkman/GV- series models. Last one was the HD700

[@thoriumriver]

What you do after shooting the video? Do you re-assemble the stuff or you just throw it away?

[@MatthewSuffidy]

I never thought of it before but how do all the signals contact out of a rotating head like this? Is there just one tap at the top of the rotating head, that is the data out? There maybe has to be a supply voltage to the head board.

[@eXactModellbau]

Hi I like Your macro footage. What camera are You using?

[@Seegalgalguntijak]

Oh yes, reliability was an issue, the display was the first thing to go on these machines. It started becoming white in the center and that spread out towards the sides, until you could hardly see anything. Just like in the video where you turned this one on before you took it apart.

[@aaronazz]

For those interested in videotape threading goodness, check out any U-Matic, Betacam, Betacam SP deck. Splooooge!

[@DB7MM]

0:51 You can't beat a product that has a telescopic antenna rod. Well said, Dave. Antennas - the bigger the better. You really should get a ham radio license.

[@tohopes]

Doing the "Walkman" tear-down so soon after knee surgery? You're walking on thin ice with Karma there, Dave..

[@radarmusen]

Good timing, funai has finally stopped making video. There was the last, wonder how many there still have one.

[@codebeat4192]

Do a minidisc walkman teardown. It always amazed me that it's possible to run it from only one AA battery for such a long period! What's inside that makes it that efficient?

[@martinda7446]

The delay line, note, was made by Asahi Glass. They made Pentax cameras in the mid 50s, before Pentax went it's own way I think? Pentax lenses still carried the Asahi name well past the 1970s. Anyone want to research...or knows already?

[@contemporiser]

Fascinating how many inventions had to come in people's heads prior to this, just to make it possible. And all that so someone can waste his/her time watching "Rambo".

[@Flutterwhat]

my dad had a police scanner in the late 90s that could actually tune into tv signals as well. had a similar form factor but it did not do tapes. I'm not sure if it was a sony or not but it wouldn't surpise me if it had a sharp display

[@douro20]

I guess this was their answer for bringing something similar to the portable Betacam decks to the consumer market.

[@JohnDoe-qx3zs]

Betacam was their product too! Maybe even the same camera plug, though I'm not sure.