How to fix a Keytronic foam and foil keyboard

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How to fix a Keytronic foam and foil keyboard

Рет қаралды 62,544

Күн бұрын

#keytronic #foamandfoil #trs80 #refurbish
In the next installment of the TRS-80 Model II saga, I work on the keyboard so I can finally test to see if this machine is actually working.
Part 1: • Another left for dead ...
Part 2: • I actually got somethi...
Part 3a: • This is how to use an ... (using 8" drives on a PC)
Part 3b: • This is how floppy dri... (all about termination)
Part 4: • I'm really scared to t...
Part 5: • I fixed the TRS-80 Mod...
Part 6: This part!
Part 7: • Using an $25 Gotek flo...
--- Video Links
Texelec “Foam and Foil” Capacitive Pads for KeyTronic & BTC Keyboards:
texelec.com/pr...
TRS-80 Model II manuals:
electrickery.h...
TRS-80 Model II Github Archive:
github.com/psk...
Adrian's Digital Basement ][ (Second Channel)
/ @adriansdigitalbasement2
Support the channel on Patreon:
/ adriansdigitalbasement
-- Tools
Deoxit D5:
amzn.to/2VvOKy1
store.caig.com/...
O-Ring Pick Set: (I use these to lift chips off boards)
amzn.to/3a9x54J
Elenco Electronics LP-560 Logic Probe:
amzn.to/2VrT5lW
Hakko FR301 Desoldering Iron:
amzn.to/2ye6xC0
Rigol DS1054Z Four Channel Oscilloscope:
www.rigolna.co...
Head Worn Magnifying Goggles / Dual Lens Flip-In Head Magnifier:
amzn.to/3adRbuy
TL866II Plus Chip Tester and EPROM programmer: (The MiniPro)
amzn.to/2wG4tlP
www.aliexpress...
TS100 Soldering Iron:
amzn.to/2K36dJ5
www.ebay.com/i...
EEVBlog 121GW Multimeter:
www.eevblog.co...
DSLogic Basic Logic Analyzer:
amzn.to/2RDSDQw
www.ebay.com/i...
Magnetic Screw Holder:
amzn.to/3b8LOhG
www.harborfrei...
Universal ZIP sockets: (clones, used on my ZIF-64 test machine)
www.ebay.com/i...
RetroTink 2X Upconverter: (to hook up something like a C64 to HDMI)
www.retrotink.com/
Plato (Clone) Side Cutters: (order five)
www.ebay.com/i...
Heat Sinks:
www.aliexpress...
Little squeezy bottles: (available elsewhere too)
amzn.to/3b8LOOI
--- Links
My GitHub repository:
github.com/mis...
Commodore Computer Club / Vancouver, WA - Portland, OR - PDX Commodore Users Group
www.commodorec...
--- Instructional videos
My video on damage-free chip removal:
• How to remove chips wi...
--- Music
Intro music and other tracks by:
Nathan Divino
@itsnathandivino

Пікірлер: 428

@8antipode9 2 жыл бұрын

It's good to see Keytronic keyboards around. I'm from Spokane, and in college I had a part-time job at Keytronic running the "keytopper" machines. These machines had two massive vibrating hoppers, one with key caps and one with plungers. The vibration would march all of the parts into position and a pneumatic plunger would push the two together. These machines were finicky, and would only run about a minute at a time without jamming. If you were good (I did get good after a while), you could get them to run about five minutes without jamming. It was enough time for me to get some studying done while I waited for the next jam!

@douro20 2 жыл бұрын

And IBM was using robots- robots they developed and sold- to make their keyboards. Their robotics division existed into the early '90s when it was sold to Stäubli.

@ReganMarcelis Жыл бұрын

I grabbed one of these but a bit newer it is listed as black version (win95) of the Key Tronic LT 6500-3 ... I am hoping it is something other than these foam pads as it looks to be very decent shape so should work, I liked the height and curve of the keyboard plus it was basic but looked quality at least to me … I like to have a secondary plug in keyboard to my newer system, so hopefully it works…. (on a gigabyte x299x - 7820x CPU - workstation slash gaming pc) ....as I have a old ps/2 dual use port, if not there are adaptors? I am on Windows 10… I am again just wondering what type of keys my new but OLD keyboard has… Thanks for the cool story you had there, Steve-O-

2 жыл бұрын

17:55 "what can I do? The stand-off is just gone" => You could use your 3D printer (I spotted it at the beginning of the video behind you) to model and print that stand-off from ABS and then glue it on the place using acetone 😉 BTW - the same applies for covering/fixing the hole in the cover, but that would require a bit of more complex modeling, so I'd start with a simple stand-off, which would take just a few minutes in any free CAD

@falksweden 2 жыл бұрын

The hole in the cover would be quite simplie to print after cleaning the hole up with a fine toothed saw and making it square.

@Sheevlord 2 жыл бұрын

Or he could fabricate a standoff from a small diameter wooden dowel.

@th0m 2 жыл бұрын

100% thats the solution I thought he was building to the whole time.

@StrangelyIronic 2 жыл бұрын

Maybe the standoff, but I would just block up the case to make a mold then pour in expoxy and file/sand to get the correct shape and uniformity. That's a lot simpler than modelling the piece after cutting away more case material to make it easier to line up, printing the part, attaching the part, then going through the whole process of filler and sanding (not as important, but I hate the textured look of 3D prints, I always have to treat it like autobody work and do multiple passes of filler and sanding).

@Patchuchan 2 жыл бұрын

Also could use a brass or nylon stand off from the hardware store.

@paulpuhek7187 2 жыл бұрын

I work at Keytronic. I remember assembling many of those boards. I most likely designed the metal switch plate for that board too. We affectionately called these "sponge on a stick" switches, one of the best keyboard designs we ever built.

@maxtornogood 2 жыл бұрын

It's nice to see Adrian so happy when he gets things freakin' working!

@benbaselet2026 2 жыл бұрын

So therapeutic to watch these :) I would not leave any fingerprints on those foam pad foils though, or the guy re-re-restoring it in 2082 is gonna be real mad at you :-)

@stamasd8500 2 жыл бұрын

You could 3D-print (or have someone 3D-print for you) the missing standoff as well as the missing part of the case where the giant hole is, also in ABS. Then you could attach them using the same acetone welding method. Actually even better than plain acetone, is acetone in which one dissolves scrap ABS (which anyone who has a 3D printer accumulates over time). This makes a glue which doesn't drip that easily.

@Jimmy42222 2 жыл бұрын

I’d love to 3D print some standoffs and a patch for that hole in the back if I got the measurements!

@pacman10182 2 жыл бұрын

I'd be more than happy to turn some abs standoffs if he'd like

@l1nuxro07 2 жыл бұрын

Just a thought for repairing the broken standoff in the keyboard. Perhaps if you could 3D print a replacement post in ABS and acetone weld it back in. Of course if you don't personally have a printer, these could be ordered online, would just need to do a little CAD work to make the missing piece.

@battra92 2 жыл бұрын

Some public libraries even have this service.

@saskapriest 2 жыл бұрын

I was wondering if in the interim a slender, long bolt cut to size would work with two or three nuts in strategic places. It wouldn’t necessarily be fixed to the bottom plate (unless you drilled a hole) but it would stop the keyboard from warping down on that corner.

@wenpyle 2 жыл бұрын

wooden dowel cut to length and jb weld to bottom of case and a carpet tack to hold keyboard ... quick easy and inexpensive

@OscarSommerbo 2 жыл бұрын

This was my initial thought as well. The support doesn't even have to look good since it is hidden inside.

@IanSlothieRolfe 2 жыл бұрын

I was thinking just making a plastic or wooden block to support the keyboard would do, since its out of sight, and would prevent there being any stress on the keyboard frame and PCB. It could easily be made removable in case a more permanent solution presented itself.

@the_beefy1986 2 жыл бұрын

The physical restoration sounds like a job for the 8 bit guy :)

@8-bitbitsa821 2 жыл бұрын

Adrian, that missing standoff can be as simple as a Lego brick block… just to stabilize that corner. Only the height is important there, measure against the opposite left post 👍🏻

@Xsses 2 жыл бұрын

Why not, just 3D print one? It for sure will fit.

@SimonQuigley 2 жыл бұрын

why not just use a little bit of wood?

@sprybug 2 жыл бұрын

Why ask why? XD You can use all sorts of things. At one time I actually cut plastic standoffs off of other things I was salvaging parts from, just in case I'd ever need something like that for something else.

@Xsses 2 жыл бұрын

@@sprybug @Simon Quigley Because with 3D printing, you can relatively easily recreate the shape of broken thing and match the material (wood will not want to adhere to the same glue as ABS)

@felixcosty 2 жыл бұрын

@@Xsses Just an observation there is a hole where the standoff broke, a piece wood and a screw would fix it easy. I would just see if a brass PC stand off could be stacked up so it would fit and you would have a screw at the bottom and the treads at the top to hold the keyboard.

@oaquique 2 жыл бұрын

It's so nice to see a TRS-80 Model II restored and working! It was the first computer I had contact with and where I learned to code back in 1984. Very familiar screens and messages bring great memories! TRSDOS disk drives are numeric: 0, 1, 2. To exit from Basic back to the system, simply type SYSTEM and press Enter. Cheers!

@ForteIDB 2 жыл бұрын

Absolutely amazing, glad you were able to bring this piece of history back from the dead!

@mattalki 2 жыл бұрын

I grew up in a household that had a Model I. We used TRS-DOS when we first got our FDD, and eventually my father tried several operating systems before he settled on DOS-PLUS. We used that until he upgraded to his Tandy 1000 SX years later. It's really been a treat seeing you restore the Model II in this series. I hope you're able to actually use it to run some software. I also would love to see what it can do!

@ObiWanBillKenobi 2 жыл бұрын

This foam-and-foil keyboard restoration instruction came just in time for me. I am waiting for a pack from Texelec to use on a Compaq Portable 1 that very much needs it. Other than that, the Portable 1 is in immaculate condition!

@MatroxMillennium 2 жыл бұрын

It's interesting to see that your foil pads had degraded so much. My Model II came without a keyboard so I had to get one off eBay. Listed as untested, but when I plugged it in it was fully working without me having to touch those pads.

@pipschannel1222 2 жыл бұрын

Yeah that's what I've experienced as well. I have two Compaq machines from roughly the same era (roughly 2.5 years apart).. One was 100% functional while the other was completely toast keyboard wise.. Not 1 key was working properly. The foam was completely desintegrated and the foil was oxidized even worse than Adrian's Tandy while that thing is at least five years older than my machine. It must have something to do with the environment they were kept in. I think it must be the levels of humidity these keyboards get to endure... Maybe when it gets very dry the foil will desintegrate sooner? I guess the foil oxidizes because of moisture.. Anyway, I hate these Keytronic units because of this fragile design and they don't feel that great either, at least the Compaq units don't. But thanks to Kevin thousands of vintage keyboards all around the world get saved from the dead parts bin ;-) Really an excellent idea of him to produce these himself and help the retro community out! Kudos!

@jeffreyphipps1507 2 жыл бұрын

@@pipschannel1222 I didn't get the impression the foil was the problem, it was the foam in between the plastic and the foil (used to cushion potential damage to the foil). Foam from that period (or really any period) has a tendency to disintegrate to the touch. I had a case holding external parts made from that foam. I had to use a shop vac to suck out the loose foam dust and scrape the rest out - it was a mess. I am sure that it depends on how it is stored. Time, humidity, bugs, and probably more factors apply. I'm glad replacements exist.

@pipschannel1222 2 жыл бұрын

@@jeffreyphipps1507 The foil definitely was one of the problems (the desintegrating foam is as well of course like I also mentioned in my comment). I've had more than a few Keytronic keyboards that looked like Adrian's at 6:03 (check the top row right from his left hand) or even worse: Completely oxidized. There are some dark spots forming on the foil, which means it's oxidizing. On my keyboards the foil with these dark spots was 0% conductive (measured with my Fluke multimeter). I'd say that is a problem... The desintegrating foam makes conductivity even worse as it barfs all of its remains on the contact surfaces (you can see this 'dust' lying on Adrian's desk).. It's an awful and cheap design really. I'd take any mechanical or even rubber dome keyboard any time over these crappy Keytronic units..

@nickbnash 2 жыл бұрын

This series is incredible. Thank you so much for putting it together!

@ThorstenDrews 2 жыл бұрын

I'm glad to see this old machine is back working again. In the beginning of the series I was really concerned it was just a piece of junk that would be scrapped for parts in the end.

@notmuch_23 2 жыл бұрын

Model cement can "weld" ABS back together as well as it does Polystyrene: I've done it before. Also, I'm sure that missing standoff can be either 3d printed or molded and cast.

@Gigaswing 2 жыл бұрын

For putting pllasics together, you might consider using a special glue used in plasic-model-building...it does in principle the same thing as acenton, but is much more controllable

@Midcon77 2 жыл бұрын

Was just about to suggest this as well. Tamiya makes some good glues for this type of thing.

@handlesarefeckinstupid 2 жыл бұрын

Model glue is only for polystyrene plastic. I would imagine the case is ABS, therefore won't glue it.

@wbfaulk 2 жыл бұрын

@@handlesarefeckinstupid Tamiya actually makes one specifically for ABS.

@handlesarefeckinstupid 2 жыл бұрын

@@wbfaulk TBH I'd use araldite, that shit is strong.

@bionicgeekgrrl 2 жыл бұрын

@@handlesarefeckinstupid there are multiple solvent glues used in model making as not all plastics are polystyrene. One product used often is plastic weld by ema. It is strong stuff and works on abs as well as polystyrene.

@devttyUSB0 2 жыл бұрын

Your excitement when "IT'S FINALLY WORKNIG!!! IT'S FRIGGIN' WORKING!!!" is enticing, Adrian! :)

@nomadradio 2 жыл бұрын

Way, way cool! Bought a box of this keyboard's guts with no housings at a hamfest almost 40 years ago. Fed them into a 74163 shift register to mimic the Cherry parallel keyboard. Worked great with our hacked Xerox 820s and Franklin Apple ][ clones. Made a box that fed the parallel data into a UART and used it as a RS-232 keyboard on our S100 boxes. Borderline miraculous that you can get those foam/mylar pads. Bravo!

@clumsyacres2599 2 жыл бұрын

The very best part of any Adrian video is a moment like 24:28, and the absolute glee in "it's working!"

@bryantgyt 2 жыл бұрын

Adrian, I feel your joy at the end of the video! I purchased a brand new TRS-80 Model I back in '78.

@ropersonline 2 жыл бұрын

I'm very impressed by the 80x24 display, especially considering when that machine came to market. They even beat IBM to eighty columns! OTOH, this was a premium-price business machine, so it's not comparable to home computers that were stuck with fewer than eighty columns for a long time.

@AaronBockelie 2 жыл бұрын

When I was a kid and was given a beat up cardboard box with a TRS-80 CoCo, I remember the feeling of mystery and possibility trying to get it all figured out. (I was 8 or 9 years old I think) and this video really brought back that feeling. Thanks.

@bobvines00 2 жыл бұрын

Adrian, this has been a great series and I look forward to the following videos. Since you already know the keyboard "body" is made from ABS and the standoff is missing, you could simply order a small piece of an appropriate size of ABS from an online plastics supplier that has no minimum order (they _do_ still exist, I think! Or from Amazon....) and cobble up a replacement standoff. Obviously it wouldn't "look" original, but a missing piece and a keyboard that flexes when typing isn't original either, so I think an obvious replacement piece would be a good choice.

@Dave5281968 2 жыл бұрын

Absolutely amazing change in appearance! The keys shine so nicely that they look wet in the video. Another piece of truly great restoration from you.

@saskapriest 2 жыл бұрын

What an amazing journey this has been. Thanks for taking us along for the ride! So glad it’s “freaking working!” 😃

@paulravitsky2898 2 жыл бұрын

Didn't know someone made replacement pads! Nice job repairing the keyboard. Remember, don't leave a floppy in any drive while powering up or down.

@JARVIS1187 2 жыл бұрын

Dang it, I thought "hey, today he will finally finish up everything!" and started watching the video until I recognized, I already saw it. Sometimes it's hard to be a patreon :(

@objection_your_honor 2 жыл бұрын

Today, I learned that spiders have balls!

@0ctopities 2 жыл бұрын

half of everyone has balls, some girls have balls, lol

@Meowmaritus 7 ай бұрын

"I just watch KZfaq videos while doing this kind of work" I'm real into vintage keyboards and often have to work on them, and i watch your videos while working on them

@alextrusty2585 2 жыл бұрын

One if the coolest series of yours.

@thebyteattic 2 жыл бұрын

Although I have paid more attention to it in recent times, I relate to your focus on function over aesthetics. But treating that corrosion at least with some rust converter was a must, methinks ;-). You'll soon have to do it anyway, or the thing will crumble. But that aside, what a satisfying restoration this was, congrats!

@johnsonlam 2 жыл бұрын

The humidity in US is quite low, as I travel there 20 years ago, if the computer is inside a house or not expose outside, the rusting will be slower, and it seems not too serious, maybe when Adrian have time he'll do it later. The TRS is really not very friendly in both hardware and software. That's why it never appear in my city even back in 80's, just heard that the BASIC is compatible with Color Genie, which I have own it for a period.

@adriansdigitalbasement 2 жыл бұрын

Yeah it’s worth fixing and shouldn’t be too hard really. I’ll just have to pop all the sliders out … rust converter should do the trick. Luckily it’ll live indoors now in 45% humidity so indeed, it won’t really rust any further.

@temptorsent 2 жыл бұрын

@@adriansdigitalbasement - Try picking up a gallon of Evapo-rust for dealing with those rusty steel parts -- you don't even need to remove the plastic parts in most cases, and you can reuse the same batch of liquid many, many times.

@misterhat5823 2 жыл бұрын

@@johnsonlam LMAO. There are parts of the US that are humid and swampy and parts that are dry deserts.

@johnsonlam 2 жыл бұрын

@@misterhat5823 Yeah I know, but for the inland area guess the humid is not extreme like the place I live, always got humid over 75%, I've visit US many years ago, even the soap added ingredients to make skin oily. I think few people like to live in high humidity area.

@rille47 2 жыл бұрын

w0w dude, epic repair, amazing to be able to share the experience with you, it´s been a treat to follow all the episodes. Great work! The skills you posses is above and beyond.

@techkev140 2 жыл бұрын

Really appreciate those like yourself that create videos about older hardware. Makes me wish in the day i had opened my ZX Spectrum, Atari ST, Amiga A500 and PC. Oh wait, I've been inside PC builds since the 90's, and i did take apart my later Amiga A1200. But unknown hardware that I've never owned is always interesting, as it something i will likely never see or handle in person. Keep going Adrian.

@ObiWanBillKenobi 2 жыл бұрын

**Congratulations!!** This is the most impressive computer restoration I have ever seen!

@kimtaylor2741 2 жыл бұрын

Wow - great timing. I'm currently trying to get the keyboard for my Brother EM-1 typewriter working and it has the same "foam and foil" keys as this keyboard. I'd never seen them before. Thanks for the mention of TexElec's replacement pack - and thanks in general for your amazing videos!

@andyd3xtrous 2 жыл бұрын

I bet you wasted precious DeoxIT the first time you tried to fix it.

@principals16842 2 жыл бұрын

Going by Betteridge's Law of Headlines, I bet it doesn't frickin' work. (At least, not at first.) Can't wait to see!

@paulstubbs7678 2 жыл бұрын

Good to see it working, that missing post can probably be replaced by a long metal thread screw and a few nuts and washers. Two nuts at the top can be locked together and adjusted to give a perfect level support

@PaulinesPastimes 2 жыл бұрын

Fantastic! Your excitement at it working must recall the same excitement the original owner experienced when switching it on for the first time. Wonderful result.

@solarbirdyz 2 жыл бұрын

This has been amazing, I'm just astounded you got that absolute monster up and running. Great job.

@cairsahrstjoseph996 2 жыл бұрын

Congrats on getting it working! Persistence pays off. You sounded happy like it was time for presents on Christmas!

@OneSmallStepWeb 2 жыл бұрын

What a great save. This was one hell of a basket case say the start. Great to see it has been saved.

@crushboss 2 жыл бұрын

"Spider Balls" !! You must have awesome vision Adrian!

@RKelleyCook 2 жыл бұрын

OK perfect timing, I needed to fix a few keys on my 40+ year old TRS-80 Model 1 I just retrieved from my parents home. I ebayed a key puller last week, but watching this I think I know what is likely wrong before starting. So I ordered a set of the keytronic pads from TexElec. Thanks Adrian

@paulravitsky2898 2 жыл бұрын

Hopefully the pads you ordered aren't expensive. The standard Model 1 keyboards were either a Hytec {shiny key caps} or Alps {textured keycaps}. The Alps are not repairable and the Hytec has spring brass contacts that may be cleanable.

@erickvond6825 2 жыл бұрын

With as much as I've seen you accomplish over the years I had no doubt in my mind. My favorite part is where you get so excited when you get it working. I love your content and I hope you're able to continue creating for many years to come.

@oak_meadow9533 9 ай бұрын

congratulations on a good rebuild, I would love to have a working TRS DOS system. You are blessed indeed.

@1stage 2 жыл бұрын

I've started using Krud Kutter (red label) for cleaning PCBs before I use IPA. Due to supply issues, IPA is super expensive, so I use it sparingly/rarely. Also, IPA can remove some original paint/ink markings from the factory, so I start with the KK spray, then thoroughly rinse with water, and dry with compressed air. Krud Kutter is also very good at removing cigarette smoke residue on old arcade machines that were in bars or restaurants (gross!). And now 303 Aerospace Protectant is my new favorite thing! Thanks for the tip. I commonly use inexpensive massage lotion (unscented) for revitalizing or cleaning ABS, PVC, rubber, or urethane (particularly old t-molding and bumpers on arcade machines), but this will be my "hard plastic" revitalizer.

@tolgainci 2 жыл бұрын

Great to see that dead machine working once again! +1 for 3D printing the missing standoff and the giant hole where the connector is

@tiemanowo 2 жыл бұрын

10:16 I really like the music from Nathan Divino. Makes watching your videos even more enjoyable.

@craigsmith3645 Жыл бұрын

Adrian, good job on this! You can put some stiff foam under the keyboard for support. Trim the height & glue it to the base with a dot of RTV. You could make a new hole for the connector in the undamaged part right next to broken hole and remount it there. I would find some plastic pieces and RTV them inside the broken hole so that dirt and stuff doesn't get inside.

@gavinmitchell3709 2 жыл бұрын

Please make sure to update the discriptions of the last few videos to include this link as part 6, the name mislead me into believing we were still waiting. Thanks for the series! It somehow keeps me entirely interested while making me tired enough to sleep at the same time, and you don't know how much that means to a person that has a really hard time going to sleep.

@adriansdigitalbasement 2 жыл бұрын

Heh, I have to say sometimes when I'm tired my own videos put me to sleep. (And others as well.) I think it's natural if you have things on your mind that listening to someone talk about something can relax the mind. I went and fixed the links on all the videos just now. Thanks for the reminder! I need to make a playlist .... and also get back to the machine, it's been sitting there waiting for me to try to fix it some more. (Now it re-broke)

@JenniferinIllinois 2 жыл бұрын

I love your excitement when you get things working. 😁😁😁

@adambourne5523 2 жыл бұрын

I'd loved this to have actually come out on xmas eve! knowing the TRS 80 was functioning would've been the best festive present ever!! I'm sure it made your xmas Adrian

@thethufir 2 жыл бұрын

While it is so much fun to watch you go through the processes of restoring the old hardware, the best part of your videos is the genuine joy you show when you get stuff to work! Keep up the great work Adrian! :)

@archivis 2 жыл бұрын

I once had to tryto clean spider stuff from the one and only gas grill we ever bought. To get access to the venturi holes you had to dissemble basically 95% of the grill because everything was in a spiral so every part you removed was covered by another part taking 14+ hours to get access to the vventui and despider them. When 6 months later the venturis were clogged with spiders we gave up up on it and replaced the charcoal grill that we had been using previously. No more massive gas grill maintenence. :)

@RetroJack 2 жыл бұрын

I'm loving this journey - thanks Adrian!

@orchestratedpassage9468 2 жыл бұрын

Would love to have the TRS-80 Model II but like a lot of us I gots enough projects😁 Congrats on bringing this one back!

@jhonbus 2 жыл бұрын

Every one of your videos I smile to myself as you say "Without further ado, let's get right to it," and then instead of getting right to it we get right to the the intro song. I don't know if it has a name already but I move to name the intro song "Without further ado"

@ScarletSwordfish 2 жыл бұрын

I am amazed and impressed at how you've gotten this machine working again. You've done such great work here.

@kepamurray1845 2 жыл бұрын

You're worried about paint after achieving what you have done? Even after saving this unit? Get on with your good work and ignore the trolls. I would love to give you multiple thumbs up on your vids. A working unit is exponentially better than an aesthetically pleasing unit that is inoperative. Good work man!

@crazyedo9979 2 жыл бұрын

Without the housing the computer looks similar to my first homebrew PC. Brings back memories.😁

@stephendouglas684 2 жыл бұрын

My favorite adb series!

@Niederrheiner74 2 жыл бұрын

Thanks for that great video, it's awesome that the machine works and that all those efforts of you paid off. I really felt happy for you when you realized it works.Looking forward to more of these great videos from you in 2022! Greetings from Germany and all my best wishes for the new year!

@twistedexistence3603 2 жыл бұрын

When you picked up that floppy, in the beginning, I almost spit my beer! =)

@squirlmy 2 жыл бұрын

where are you? it's not even 9:30 AM pacific time, are you drinking the breakfast of champions? lol

@andymouse 2 жыл бұрын

Yeah it looked absurd !

@Okurka. 2 жыл бұрын

*milk

@ropersonline 2 жыл бұрын

...said the actress to the bishop in recounting how she first encountered an eight inch floppy...

@twistedexistence3603 2 жыл бұрын

@Ching McChong LOL!

@sublime2craig 2 жыл бұрын

A real Retro Nerd would of taken a swig off of that dirty keycap water to get the essence of the 80's back into their bloodstream! Love the content and vids and please keep up the awesome work!

@Pest789 2 жыл бұрын

I did a car PC project years ago and played with ABS and acetone a lot during that process. You can get raw ABS chips (or scrap) and melt them in acetone to make a slurry that acts like a filler putty. I made some and used a PET mustard dispenser to store and apply it. You could either 3D print a standoff and a filler panel or find some scraps that can be bodged together into them and permanently bond them to the keyboard case using the slurry. Then it would be a simple matter of a little "body work" and paint to get it smoothed out and looking 100% from the outside.

@WilliamHostman 2 жыл бұрын

You could use a combination of INKEY$ and ASC functions to check the arrow keys and such. 10 A=inkey$ 15 print asc(a) 20 goto 10 As for the standoff... just drop a small (2-4mmx40mm) bolt in, and epoxy it in place (head down), putting two nuts then a washer to hold the corner up, and a washer and nut on top, then chop the excess off. You set the bolt, then send both under-board nuts below needed height, set the upper of the two to correct height (with board and washer in place while you do, then lock it in place by tightening the lower against it. The top of the board, you're just screwing down to prevent bounce. Then trim with the dremel to keep the bolt from interaction with case top. For real slick finishing, you cut a straw to match the bottom edge of the top nut, set it around the bolt, and fill with epoxy. (bonus if the straw doesn't adhere - Mold release may be of use.)

@Eyetrauma 2 жыл бұрын

Love the aesthetics of the disassembled system and the shiny keyboard, it's like something you'd see in a movie like Dark City or Brazil or something.

@ralphj4012 2 жыл бұрын

For any future ABS repairs try Evo Stik extra strong PVC pipe weld which dissolves / welds similar to acetone, without the drips (though it will still mark plastic if it gets on your fingers). You may be able to use a self-adhesive PCB standoff to support the top right of the keyboard. There may be just enough room (next to the broken section) to drill a new hole for the connector.

@apocalypsevingt-cinq156 2 жыл бұрын

The TRS saga is awesome.

@harpingon 2 жыл бұрын

Now that 3d printers have come down in price a lot, I'm sure a little printer would come in clutch for making fill ins for cases, and that stand off. I never had one of these, though I did use an ICL DRS20 that had 8" drives.

@johnsonlam 2 жыл бұрын

Great job, definite TRS 80 is a very complex computer to restore.

@JamesPotts 2 жыл бұрын

We need "It freakin' works!!" t-shirts.

@elmariachi5133 2 жыл бұрын

What you can do: Use resin putty to form a new stand with your hands. After it hardened make it fit using a file. I am concerned that even a little pressure on the upper right keyboard, while using the numeric pad, will cause inappropriate stress on the tiny upper pin of the remaining bolts, shearing them sideways. So using this keyboard might lead to having no standoffs pretty soon. I also like to dip older worn out structural parts like the plastic bolts in ABS glue/acetone for a very short moment and then have them drip off, so at least their surface gets 'reconditioned' for improved strength. Btw: I would recommend to never remove the remains of the glas fiber pen with your bare hands. The broken little parts are nearly invisible when they get get stuck deep in your skin, bringing pain for weeks or even months before you might be able to get rid of them.

@tony359 2 жыл бұрын

amazing! It almost sounds like the 1966 USS Enterprise computer interface! :D

@fernandoorozco3751 2 жыл бұрын

With the plastic off, it looks like a computer from Fallout. LOL. Great job BTW. Even though I have no serious interest in retro computing, I found this build fascinating.

@charlesjmouse 2 жыл бұрын

Awesome, pleased for a positive result for all your hard work.

@Jimblefy Жыл бұрын

Awesome fix dude. I'm loving this series. Thanks :)

@candydeebe2725 2 жыл бұрын

CONGRATS ON AN AMAZING JOB, ADRIAN

@thegrays3303 2 жыл бұрын

The keyboard i used to love was the IBM 5150 keyboard. Use to love the noise it made when you were typing on it.

@darrenwendell1723 2 жыл бұрын

Love your excitement !

@parrottm76262 2 жыл бұрын

I love your partial keyboard restoration. If mine, I wouldn't do any more to it, but I understand how others might feel different.

@ms-dosman7722 2 жыл бұрын

It's funny how you watch YT videos while doing mundane retro restore tasks, because that's what I'm currently doing watching you! :D

@SC-CAJUN 2 жыл бұрын

Always a good day when the content is Model II !!! Thanks Adrian!

@GeeFunk84 2 жыл бұрын

I can honestly say that this very computer has become one of my favourites on the Internet.

@davidsmall6322 2 жыл бұрын

Another great, concise tutorial.

@rager1969 2 жыл бұрын

It was a Christmas miracle! For the keyboard, you should make a rough support block/stand-off for the keyboard and a mounting block for the DIN connector and hot glue them in. Use wood or 3D print it. It doesn't have to be pretty (you won't really see it), just a little secure to protect the keyboard and cable.

@rony12345ification 2 жыл бұрын

Congratulations Adrian it was a great restoration! thank you for share.

@patriziopolcri995 2 жыл бұрын

Great job Adrian...I know that feel when a long time stopped system boots up again! Now we are ready for the next chapter...

@joas372 2 жыл бұрын

Love this series! Looking forward to seeing some programs run on this cool computer.

@bitoxic 2 жыл бұрын

Great job Adrian! This has been a massive project... you magic got this old machine working like a charm! 😁👍

@annareismith6843 2 жыл бұрын

Thank you so much too. I always look forward to your videos.

@dennisbartello7682 2 жыл бұрын

Good to see the poor keyboard all happy and young again! This is on the same level as getting a Yamaha DX7 mk 1 up and running. Ahhhh... =_=

@abcd1239me 2 жыл бұрын

We had one of these computers with the two expansion disk drive unit, and it worked

@kevinshumaker3753 2 жыл бұрын

Congratulations, sir. Haven't played with a Model 2 since one of my ex's employers ran their books off of one, say around 1982-83...

@markfernandes5674 2 жыл бұрын

Sounds of a happy man! For the win Mr B 🙂

@colday74 2 жыл бұрын

Hey Adrian. You go on about these being dirty and rusty, but that field C64 was way way worse. And over here in the UK I have repaired WAY worse. You know, that person you visit in a block of flats where the whole communal area smells of alcohol and cigarettes, and they get the computer out of a random damp and rough storage area. The computer (an Amstrad CPC464) stank my car out. It turns out that his cat slept on it. It was rough. But is clean now and happily works whenever I power it up. I have a lot of stories like this. Fun fun fun.