Sharp PC-7000 Restoration

I recently picked up this portable IBM PC compatible and need to give it a little TLC
This thing really wants to give me a hard time. This video didn't really go as planned and took much longer to make than I planed.
While I do have this thing pretty much done now the floppy drive is going to be a problem. I will see if there is anything underneath the Canon stickers on the back to see if they are sealed. I really hope someone recognizes the type of motor that is and can give me a hint at a replacement.
Original keyboard cable failing on the cable tester: • PC-7000 badCable
Playlists of more stuff like this:
Computers: • Computers
Repairs: • Repair
1980s: • 1980s
Other Links
KZbin: / akbkuku
Github: github.com/AkB...
Thingiverse: www.thingivers...
Patreon: / akbkuku
Discord: / discord

[@MrTruth-yn7pq]

15:25 What setup is needed for retrobrighting beyond plastic bins to hold the pieces, plastic wrap, hydrogen peroxide activator from a beauty supply store, water and sunlight? I dont understand why you make it out to be more complicated then it really is..

[@TechTangents]

I've acquired all the materials needed to take the ozone method to the next level. So I'm going to be trying that out. I don't like the idea of having to buy hydrogen peroxide all the time. The ozone method would be a zero consumable, completely renewable option that I could just drop something in a dedicated tank and let it set. I also don't want to rely on sunlight because I want my results to be consistent.

[@MrTruth-yn7pq]

Ahhhhhhh you're going high tech instead of oldschool like the 8-bit Guy. I'm looking forward to seeing the turbocharged ozone method in operation. Thanks for replying, it's appreciated.

[@dingdongbells3314]

He might not have a proper drive way for washing down the computer with his hose. That's a requirement if you've seen 8 bit guy's retrobrighting process.

[@StarkRG]

The ozone method still requires heat or UV light in order to make it progress faster otherwise you're probably looking at several weeks of constant immersion in ozone. I'm thinking, though, that the ozone method would have the added advantage that the electronics wouldn't need to be removed from the plastics since electronics tend to produce ozone on their own anyway (though they usually aren't bathed in it for extended periods). UV light isn't hard to produce artificially if you don't want to deal with the variability of sunlight. There are several UV-only LED grow-lights that you can get either online or from your local hardware store (the LED variety is going to be much more economical in the long run than fluorescent, though slightly more expensive initially).

[@olik136]

@@dingdongbells3314 you also have to live in ̶h̶̶e̶̶l̶̶l̶ Texas to get enough UV light from the sun

[@emretasdemir8028]

Retrobrighting is a necessary thing in almost every retro computer restoration.

[@DasMrOSi]

I always wondered how to make coiled up cables myself, now I know, thanks.

[@benbaselet2026]

I'm still wondering what they are good for..

[@DasMrOSi]

@@benbaselet2026 They stay put without being stiff

[@Ale.K7]

Nice machine and restoration! '78 '79 on the CPU are copyright years. I think the datecode is 533, 33rd week 1985.

[@0Wayland]

Your dedication to these projects is something else man, huge respect!

[@asagoodfriend]

Man you're the best. No BS NCS Music in background.. Only your peaceful voice and pure knowledge. 😊

[@freezetile8588]

What does NCS mean?

[@spikefallyt3350]

Gamecubes0 It means NoCopyrightSounds

[@freezetile8588]

Oh, I see. Thank you!

[@blackneos940]

@@freezetile8588That Profile pic tho. :P

[@freezetile8588]

:D

[@senorcapitandiogenes2068]

With your voice, your look and your attitude I could totally imagine you as a character from "Waynes World"

[@IgnazKevenaar]

Oh man the spring loaded cover of the keyboard cable going up is absolutely fantastic. Such eye for quality.

[@dripfreefpv9695]

I was happy to see this video show up. I picked up the same machine 5 years ago from a thrift store for 3 bucks. There wasn't much info online when I checked back then. Luckily I didn't need much because mine was 100% functional. I remember as I walked up on it in the store I thought it was a sewing machine.

[@pvc988]

You can 'invert' the coiled cable after it cools down to make the coil even more 'coily'.

[@johnharmer394]

I'm stoked to finally see a restoration video of this unit. I have one of these but the power supply is dead. I hope someone posts a repair video on that :-)

[@arminmertens]

Are you sure it's the backlight that's dipping and not the image on the lcd? Check the driving voltage of the lcd, i'ts probably a negative -24v rail. This may shake the contrast around making it look like the backlight is dipping. Also hate to be negative but the modem port is probably just a internal com port with some power rails alongside it. What I have done on some of my retro portables is to wire this up to a "wifi232" internally but make sure it runs on its own com port first sometimes it is shared with the external one. EDIT: For the modem. Just realized that you showed the bios on screen. So I checked and sure enough: Bad news: internal modem is serial. Good news: it has its own com port.

[@TechTangents]

I had a feeling it was going to be that since that connector was so much smaller than the one for the CGA card. Time for plan B then, I'll run a ribbon cable up from the bottom expansion port to the area where the modem would be and use that as mounting point for the ISA to CF adapter. For style points I may as well internally integrate an RPI0W onto that serial port while I'm laying out the board. The bottom port should definitely be full ISA since they planned on making an external ISA enclosure. I'm not sure if that ever happened, but it means the possibility is there.

[@arongooch]

This thing almost has the build construction of a modern day oscilloscope. Awesome video too.

[@dulceb1100]

I am really enjoying ALL of your videos. It's the weekend, the lawn is overgrown, and my garage could use a good cleaning. But I'd rather just sit in my Dark room, with a cup of Coffee and enjoy your TLC videos.

[@anthonybrunotheodd]

Love the music you used while you did the quick time of the cleaning.

[@gutless_worm]

I just nabbed a PC-7200 at a garage sale and the display is actually REALLY nice. Super crisp and bright by today's standards let alone for a 35 year old computer. Unfortunately I can find almost nothing on this specific model so I have no idea what change was made to make it so much better.

[@Fuzy2K]

I don't know if it's because I'm sleep deprived and feeling really silly, but I died laughing at "January 39th".

[@sadmac356]

I mean, it's a completely nonsensical value and that amuses me

[@draggonhedd]

You should replace the EL panel behind the LCD. You can get cut-to-size EL sheet in various colors, and it will REALLY do well for improving the visibility of the shoddy LCD contrast.

[@martypines2321]

J A N U A R Y 3 9 , 2 0 1 9

[@olik136]

the number of views of your videos is a nice example of how popularity is basically generated by the youtube algorithm that suggests videos- your videos are all really well made and interesting (well the one where you install office from diskette may be slightly less dense in information... :) ) yet a few videos have 10x the views than average... I like your stuff and I am looking forward to watch your computer wizardry that is absolutely out of my ballpark!

[@Handskemager]

First thought was, the cable looks like a RJ-11 telephone cable, got even more convinced when you said it was a 6 conductor cable :)

[@kuro68000]

I've seen those stepper motors before. Googling doesn't turn up anything but I guess that's because they are so old they never appeared in any online catalogues, but I've seen them or some that looked very similar (and may be compatible) in Japan before. An electronics shop in Akihabara had some if I recall... Probably Nichibei Shoji. Not a lot of help but maybe if you check Yahoo Japan auctions one will come up.

[@StuffWePlay]

Super relaxing video dude! Great restoration on this classic piece of tech!

[@pyroskelethor1562]

Now that’s some serious fucking technology

[@MRB16th]

You're damn right it is. And with the modem, external monitor, printer, a 10MB external hard drive and a backlight for night work - you have one hell of a machine.

[@elbiggus]

I know it's an old video, and I assume it's been mentioned before, but when you make a coiled cable the trick is to turn it "inside out" to reverse the handedness after the initial coiling - once you've done that, when the wire attempts to return to its original shape it actually tightens itself rather than straightening out.

[@Altoclarinets]

damn, remember when you could just walk into a store and buy a bottle of rubbing alcohol? Shit's wild

[@brianoconnell6459]

*chortles at the BIOS screen* I'm fairly sure your system isn't Y2K compliant.

[@babakht]

Wow that dual monitor gaming was so immersive!

[@osgeld]

you have to coil it, warm it to set the insulation memory, once its cooled back down, twist the entire thing inside out and then it will hold (that's how they make them for real real)

[@0raffie0]

Holy moly, you were all in on retrobrighting back then huh.

[@retr0life]

A cocktail of keyboard keys in that glass...

[@BollingHolt]

Cool little portable! And MAN, cable making! I will NEVER enjoy making cables. You have more patience than I have LOL.

[@TheButtercool]

Just got one of these, seems pretty cool. I don’t have a boot disk tho, so I can’t really use it. But still pretty cool

[@eduardoavila646]

20:30 I used to play games in that speed in my netbook, even dos ones like duke nukem

[@SUPERBOBESPONJA1000]

i haved 3 netbooks and the 3 played gta sa fine

[@mrlurchAU]

I do love a good luggable. I have bot a TRS80 4P and a Compaq. But both of these are CRT monitors, which would make yours a pretty early attempt at an LCD, so in that regard it could be worse :)

[@seanc.5310]

This guy is beating the pants off the 8-Bit guy in terms quality of content and I would love to see the sub count reflect how good this channel is. I'm tired of 30 minutes retro Brite videos which it feels like is the only thing happening on that channel these days. I love this channel for the raw knowledge and repair sequences and I found the key cleaning timelapse oddly mesmerizing.

[@Esth.1]

What? Maybe you have a short attention span, but 8-bit guy does so much more than retrobrighting! He's probably just as knowledgeable, and if not he makes sure to get to the bottom of things to get it fixed in the end after all. Don't diss him like that, they're both good channels!

[@seanc.5310]

@@Esth.1 I've seen every single one of his videos. He is very knowledgeable but the channel is way too boring now. Sorry, just the truth.

[@CoWinkKeyDinkInc]

you mean the not truth?

[@seanc.5310]

CoWinkKeyDinkInc very clever Mr Dink

[@Esth.1]

@@seanc.5310 With all respect: but I think you didn't get the definition of "truth" and "opinion".

[@RetroBerner]

did you try just putting new connectors on the old cable?

[@TechTangents]

No, being a coiled cable makes it really difficult to "bend test" it to see where the internal break is. And it is so hard to put a crimp connector on soft cables by hand that if I'm going to do it again I'm going to start with new cable with no problems.

[@RetroBerner]

right on, good luck

[@sevenfortyfour]

VETTE! is amazing. It would even run on a Mac 512k. A 3D polygonal game on a machine essentially from 1984 that fit on a floppy disk, and even had networked multiplayer. But it was at its best on an EGA PC or a Mac II class machine that could do 16 colors. I always had fun messing with the gravity and crashing into things and driving into the bay. Also if you ever need some filler music and don’t feel like coming up with anything (seriously, creative motivation is hard) I’ve got some old stuff on a Bandcamp page that you’re welcome to use

[@JessicaFEREM]

In coiled cables, there's usually a coiled plastic in the wire itself and then the cable is made around that, so it's basically impossible to make your own unless you make your own cable

[@leektah354]

No, the completed cable is coiled around a mandrel/rod then heated. After cooling the coil's direction is then reversed.

[@echristopherson78]

Excellent video on an underrated (and not well-documented AFAICT) computer. I'm also very curious about the ISA and/or HDD connections. Might you be willing to share the system disk image(s)? We have it running vanilla MS-DOS 3.1, but I believe we'd need the Sharp disk(s) to get into that setup menu.

[@TechTangents]

I don't have the original disks. It just has a key on the keyboard for entering the setup menu. It is thankfully unrelated to the OS.

[@echristopherson78]

Ah yes, there it is! I guess I forgot that bit after not poking at it for a while. Thanks.

[@jaybrooks1098]

It’s hard to terminate non solid pairs. That is how you make coiled wire. A pvc case can be tempered to any shape.

[@luha628]

Did you make the music for the time lapse?

[@TechTangents]

yes, that's why it sucks. I'm trying to force myself to make music for the videos in between projects.

[@luha628]

I thought it sounded pretty cool tbh. It adds a personal touch to it

[@tjyoyo3]

I thought it sounded pretty good tbh.

Man it doesn't suck, I loved it!

[@KarjamP]

@@TechTangents You already know how music works. That's the bare minimun needed to work with music properly; many of those who you may encounter don't know how music works, or they're too busy relinquishing their own personal tastes to properly care enough. You just need to learn how to hear, to listen to the sounds of your songs and to know what they're saying, so that you can deal with them, accordingly. (Those songs on my channel? Examples of what not to do; I am planning on uploading new music once I got a certain part of my long-term plans worked out, one of which, involved myself, figuring out how to hear my own songs as I compose them, but when I do my songs, I'll upload them.)

[@KJohansson]

Would love to pick one of these up, but currently the only items on eBay are in the States and shipping to Europe in "covid-times" are both expensive and time consuming.. Nice one!

[@mphaan]

I've got a 7100 (With 20 MB MFM hard disk) and the screen is perfect. Only problem is the HD fails every now and then. Any tips on attaching an IDE or other drive?

[@bdbensley]

it was very cool at the time. much smaller than the Compaq portable!

[@WX4CB]

just a note on the keyboard cable, what you can try to do is to coild the cable up, and once it's coiled then reverse the coil all the way and it should stay coiled

[@罗梦宇-i6p]

Use white heat shrink tube to make a twist cable. After it shrinks, it may look ugly, but works every time.

[@netherforager]

The Screen is sharp!

[@jamesvalentine925]

Nice restoration. I look forwards to seeing how it comes up once you're set up for retrobrighting. Did the power supply turn out to be ok in the end?

[@TechTangents]

So far it seems fine, just the odd flickering of the backlight. Which, upon retrospect, could be failing itself. "off" never fully turns off, "dim" is the same as off, "standard" is completely useless, and "bright" is the one that flickers. There is a spec in between some of the layers in the LCD that I intentionally did not try to remove. I read about someone attempting something similar and ruining the display because it is connected with a conductive adhesive based on their description. I didn't look for my self, I just filed it under the category of "not worth the risk". I assume the backlight is mixed in all that unpleasantness so I didn't bother trying to dig deeper to determine it's health.

[@jamesvalentine925]

I'd completely agree, back lighting was never intended to last this long. The only workable solution would be to replace the entire LCD panel which I imagine would be relatively easy to do (depending on the tilting mechanism), finding one on the other hand could prove to be a very long and possibly expensive experience with little guarantee that a 30 odd year old replacement would work any better. At least with it being a reflective LCD the back light isn't essential unless you plan on making it your new workhorse and need to use it at night.

[@legomasterj]

See my other comment on this video. The EL backlight is getting worn out, but it is not failing. They all do that.

[@crimsun7186]

The same principle used to do springs should be used for coiling cables, as the cable, much like a spring, will expand a bit once free from the thing it was wrapped to.

[@BEdmonson85]

If it's truely an EL backlight, you may want to look closely at the EL power supply circuitry. EL displays use high voltage to illuminate the panel, so it'll be converting the 12v up to some higher voltage.

[@joetheman74]

TO BE. It needs TO BE cleaned. It's not going down to the local walmart to buy some "cleaned" It needs TO BE cleaned!

[@georgemaragos2378]

Hi All, i had a Toshiba T1000 for a while at work back in 1988, it is probably 10 years newer than your sharp PC-7000, but the similarity is that they are both basically IBM XT class with 8088 style 4.7mh processor and i think it has 512 ram. The good points were the built in Dos 2 or 3 in ram , but it also had a built in 3.5 floppy, it would boot of that disk if it was a system disk. The negative was even when new the display was horrible, i was just wearing glasses at that stage and i dont think i could have done more than 1 hour on it at a time, glare and lack of contrast annoys me. Luckily it has a external CGA or EGA monitor cable, so at work or home i use the external screen. I am not sure if there was a switch to disable the built in LCD screen but i definitly remember that the screen refresh rate is very slow, even using Multiplan or Microsoft Works 1 or 2, luckily multiplan has options to change colors on the spreadsheet and menu and Works has a few preset colour "skins" or laptop or reverse option as color presets. Games, yeah pretty much no, i am sure i played a few but the ghosting effect is very annoying, ( rougue was ok as was a few star trek text based games ) or the basic style games. If you have a good working parallel port, try laplink, pinouts for the standard parallel port should be used as you wont have advanced or fast / turbo / enhanced parallel port options in the bios it works with 8088 processor and you can map a remote pc hard drive and "share or copy" it like a network drive, it will be slow but i can use a XT -AT machine to get files from a Pentium 100 running dos only ( DOS or Win95 - Win98 class machines, as later models do not allow old programs to function at hardware level eg Win 2000 - XP ) You only need to look at a calculator from the time of that style of LCD and compare the washed out style of text and lack of clarity - it did its job and worked and saved on power usage Regards George

[@JL-yi1fx]

You might see if that empty socket by the 8086 is for a 8087 math coprocessor . It might speed things up a bit for the game and other select applications .

[@MontieMongoose]

January 39th. The best day of the year.

[@IRNatman]

Favorite channel now, no joke. Thanks for the awesome content!

[@tomchilds2251]

The dates on CPU are usually the copyright for the die, brand name, and/or product names i.e. 8086 was made in 1978 or the product name Core 2 Duo was copyrighted 2005. I don't think I've ever seen a chip with a "date code" on it but it's possible manufacturer does it.

[@alexvar10]

That computer really needs some retrobriting! But aside from that, it looks great!

[@bubblegumgun3292]

00:28 sheit just got awesome

[@ksacche2589]

What series of fluke is that voltmeter?

[@tromick]

You should add some type of 8-Bit Guy 80's music. Or type of LGR, jazzy-comfort.

[@myquestlog733]

That's a cool luggable and I really like the Idea you expressed in the comments of trying to internally wire up a ISA to CF card! Another cool idea would be designing a full blown base unit faeturing multiple ISA connectors. Especially since that would let you use memory upgrades or different graphics cards and basically provide you with a full blown 8086 computer instead of "just" a luggable. But it probably isn't worth the extensive amount of work. Even though I will agree upon the CMOS battery working great for a 30 years old battery I would still replace it. (Or maybe unsolder it from the board and use some long wires to reconnect it while keeping it at a distance from the board.) The risk of the electrolyte spilling would make me too nervous. This is only based on instinct though. On that note: I have heard about replacing those cells with super capacitors. Would you consider this a good idea?

[@davidmcgill1000]

So it uses a 3 line phone cable to connect keyboard? Those definitely exist out there.

[@HoboVibingToMusic]

I got a challenge for you. If you wish. Make a 2000-2005 laptop work as a workstation and gaming machine for max 2007 games. Any OS, Any laptop, your software must be "younger" than laptops age (e.g 2001 laptop must use 2002-2018 programs). Games you should try to run: UT 99,2004 n 2007. DOSGames (VIA Dosbox), Half Life 1/2 and Blood 2. Have fun, if you accept this challenge. :)

[@abhimaanmayadam5713]

I've done this. Vaio A series.

[@DavidMadrigalHernandez]

This actually sounds pretty interesting. Would love to see him do this.

[@HoboVibingToMusic]

@@abhimaanmayadam5713 i did it with Vaio vgn series.

[@HoboVibingToMusic]

@@DavidMadrigalHernandez Fell on my head after i made a vgn series laptop work like a charm.

[@Slay1337pl]

now THAT'S ultrawide

[@pnadk]

It would be fun to use the case and keyboard for more modern hardware inside.

[@SumeaBizarro]

I listened more than watched this video but it reminded me of doing test and restore to a zenith EazyPC that was a 512k NEC intel clone all-in-one with pure black and white monitor built in. Man, does CGA ironically enough look good on monochrome monitors when PC's translate it to them. Same deal, only 720kb floppy drive, 2nd drive or HDD would been options someone who got the PC originally dis not opt in for, and finding zenith's specific DOS booter took it's own time. tl;dr: monochrome translated CGA is best CGA fight me.

[@Stoney3K]

The EL inverter or the tube/sheet for the backlit screen is probably a goner. You could try hacking an LED strip in its place.

[@Lurker1979]

I guess for the time. That is why some other portables where using CRTs. You would not have worry about back lighting.

[@TimothyTimPSP]

Seriously bummed that you didn't retrobrite. I was looking forward to the finished look of it. This is my first of ur videos. Do you ever retrobrite?

[@andreykldjian]

Try to recrimp ends on the original cable. It's unlikely that the cable itself is bad. It's more likely that the old RJ11 ends oxidized.

[@beauregardslim1914]

nice job on coiling the cable. I might try that. why so much trouble terminating it? I haven't had to buy one in quite a few years, but 6-pin crimp tools used to be quite common since "business" phones often had 6 conductors and even the $15 tools would do it.

[@robwebnoid5763]

Here in 2020! Not sure if anyone has asked yet & if you still have this PC, but could you drop in an Nec V30 cpu to replace the 8086? Could make it ~10%-15% faster. Maybe also try adding a slightly faster main oscillator to overclock it a little bit (or some sort of drop-in daughterboard, if it can fit). Did you also try to clean the disk heads with alcohol & swab, if you can get in there? Try also finding a pc-7000 user manual, if you don't have one, might have some more stuff in there as far as operation you may not be aware of. It is kind of odd that Slow & Standard speed look the same, it's supposed to switch between normal 4.77mhz & 7.37mhz, from what I've read. Finally, I have not looked at other youtube videos of this model, so maybe other clips have some more info, including user mods, to enhance this machine.

[@DrewberTravels]

OMG... You have a computer from a world where there are 39 days in january!?

[@orinokonx01]

Omg Mister Argent was mentioned! Weird seeing IRC peeps mentioned on KZbin...

[@nacabaro3737]

Nice lunchbox computer.

[@stevenspasstime5339]

love the channel. enjoyed the video on this system. i as well have one of these i plan to work on some time soon. did you ever find out about the connectors inside the system and for there pin outs. also. were you able to get a copy of the schematics for this system. . if you have any info on these systems that you could share. that would be greatly appreciated.

[@ethanspaziani1070]

Hey man I got to give you props you do a lot of really good work please keep up the good work I hope my likes and subscription help you out man

[@mikek5633]

Painful watching you make a 6 wire cable. Just use a coil cord from a Toshiba Strata phone system. Already black, coiled, 12 inches long (not stretched), crimped and ready to go. Used to connect the phone base to the console.

[@legomasterj]

I have a Sharp MZ-100 laptop from '89 and their LCDs went a long way in 4 years. It is 640x400 EL and blue but is is so bright and high contrast for the time. I modded mine to run on 6 AA batteries and it gets around 2 hours of battery life. Pretty nice machine to do stupid stuff like bringing it to the Coffee Shop to get wierd looks.Also, my power supply is good on this unit and it gets fed something like 7.5V instead of 6 from battery and the EL backlight still flickers. Same with my Tandy 1400LT. Both machines are pure white(no yellowing) so I can tell that these machines were used very little. All EL backlights flicker due to power supply changes. i.imgur.com/aKSrSGT.jpg Also, if you go into the SETUP and change only the display to inverse it will do it without a reboot.

[@TechTangents]

Wow that is a crisp display(I'm always kind of surprised Toshiba didn't make cars). This unit has had a full life and definitely has a lot of miles on it.

[@legomasterj]

Oh yeah, the transition from a bright blue to a dullish grey is basically the entire giveaway of an LCDs life. If I had an old LCD that was acutally worn out like that one, I'd maybe swap it for indiglo(more teal than blue) EL panel although the Sharp is more teal than blue. Do you mind elaborating on your "Toshiba should have made cars"? I don't totally understand outside of the question on the screen, I found the original SLA battery to be completely dead and I probably could have made some kind of complex LI-ION charger but I went for some good old AA batteries. The awesome thing about this as that Sharp never assumed you would take out the battery so they powered the RTC by the battery. No RTC battery, no problem! i.imgur.com/UUqKaCG.jpg

[@TechTangents]

Mitsubishi, Hyundai, and Samsung are all companies that have or had produced both consumer electronics and cars. Eastern companies tend to diversify the products they make much more than western companies. Toshiba has done almost everything but make cars. They were a pretty big company in the 90s and I'm just surprised they didn't also diversify into automotive like some other companies did. I didn't mean anything by mentioning it. It was just something that crossed my mind when seeing that image on the screen.

[@legomasterj]

Ok, I see. Interesting. This is one of the things I like about this channel so much, you actually respond to comments(well besides the video being great)!

[@jaybrooks1098]

Electroluminescent.. ooooh that is very sensitive to voltage drop.. ballast.. maybe a capacitor would help steady the voltage

[@kaitlyn__L]

Does DOS directly address each character-cell? I was under the impression that it sent serial ASCII to the monitor much like a UNIX terminal would. And of course since that process can happen to paper, the screen would just show whatever the most recent 25 lines of text were. That's how I always thought these old wide monitors did it anyway. Oh interesting, those keys are Alps mount. Are the switches actual Alps?

[@_Twink]

Always start with the battery, the original is usually on it's way out, causing weirdness.

[@newrhea13]

im dieing this is a beautiful machine

[@matts.8342]

You should just try changing the ends on the original cable. I'd bet that's all it is.

[@neverthere5689]

I have one of these a PC-7500, where can i find boot disks!! Awesome video btw!

[@Spaztron64]

Oh god...crimping....I know the pain, man.

[@eduardoavila646]

Spaztron64 Yeah, totally, me too :/

[@jamesvalentine925]

Crimping solid core is fine, stranded is hardly worth the hassle unless you want to give up on life. I used to do network installation 15ish years ago though so have done my fair share of Cat5e crimping (to the point of painful hands).

You should also reverse coil it after first coiling and heat it again, then the coil is more "snappy" and has more "spring" :D. Trust me, I've made dozens of coiled cables (also sleeved with Paracord or Techflex)

[@Rodville]

I know I'm a bit late to the game on this one. But How It's made did a piece that showed how phone cord was made. They got the snapback by inverting the coil after they heat set it. And by inverting it they just wound the coil in the opposite direction after it was set. It's hard to explain but I hope you understood. If not please go watch that segment to see what I'm talking about.

[@Hagledesperado]

This! ... is a ... (nice Doug DeMuro reference.)

[@hi-friaudioman]

D'S screws have two NUTS. LOL

[@KaterKomPuter]

Just thought you should get yourself a little Air Compressor for quick Cleaning / Undusting maybe..? ^^

[@TheMrProbasco]

Why wouldn't your just cut the ends off of the original and remake it that way?

[@ThePillenwerfer]

Do you know where the break in the keyboard cable is? It may have gone under one of the cord clamps in the plugs so a new plug would fix it.

[@urokosakanabito6706]

Did you ever find screen new old stock screen replacements?

[@BrainSeepsOut]

Me in 1985: IBM PC is clearly superior to Apple, can you even ultrawide, plebs?

[@user-pi5xz5je4y]

You could've tinned the wires to make them less soft.

[@tscdaofficial]

If the game is lagging on one of the world's first PC's...Win10 can't handle it

[@phonotical]

EL lighting does get dimmer over time, maybe try swapping it out

[@cd-lf8xm]

hey do you still have this? wondering if you've tried a NEC V30 chip on it? Might get those extra frames ;)