14:57 - I ran into so many weird sockets/slots/connectors back in the day that I never figured out as they were rarely used and now in 2023 I'm watching these retro channels, having my mind blown to finally discover their purposes and that there are still parts to fit them floating around out there.

I love these solid IBM machines, well... except when they try to use some weird proprietary connectors XD

About bent pins: some time ago I found an AMD K6-2 450MHz with few corroded pins which just fell off so I used dremel to clean corrosion and soldered new pins made of cutted resistor legs and it is working fine so it is not a big problem to fix something like this.

Ya i’ve bent a pin before on this style cpu pins on a mac. Very simillar, they are suprisingly robust and can generally be bent back once without too much stress. But bend it again, the stress fractures are too much and it’ll prolly be time for plan B. If you do need to solder a new pin, i love how there’s such a large pad to work with.

There was actually a fair amount of bible/religious software and games, much of which came out in the multimedia era that this PC came from. I remember Foone had a couple of Twitter threads about bible games, but I can't find it in their wiki. Hopefully if they didn't wipe the drive, you might be able to find some of those games/software on there.

The solder tool is called a "solder needle".

12:30 I've never saw such a damper on any floppy drives which I have serviced. Probably way better than smash those heads every time you insert a disk.

Amazing motherboard, with so many upgrade paths! Perfect for us tinkerer! Nice pin repair, I wasn't aware of that tool.

Ah, Intel's famous LIF socket. LIF = Lotsa Insertion Force. I never liked that socket either, I always felt like I was going to break something either inserting or removing a chip from one.

What an interesting project! I'm liking that case aesthetic, and looking forward to the next part(s)!

Part 2 here: kzfaq.info/get/bejne/od6Sns6hypzbloE.html New on patreon.com/Epictronics

Nice machine, and great video as always! Thanks for the shout out!

Hey Epitronics! I have one of these IBM PS/1 computers just like yours, except I think mine is a slightly newer version. Mine has all four ram slots already installed, but it only has four instead of eight cache slots. Also my co processor slot is Zero Insertion Force and says IBM OVERDRIVE Ready. Otherwise I think the board is the same. I might come back and comment on this comment if I find other oddities. EDIT 1 I notice your Cyrus Logic graphics chip is the GD5424. Mine is different, being a Cyrus Logic GD5426. Also my board came with a full 1mb video ram soldered on. My board does not have the strange single inline socket yours has for video memory. The date code of the chip is the 14th week of 1993. Which mirrors the date on many other chips on my board. Additionally, I noticed that my BIOS part number is different. Yours is 65g9498. Mine is 52g2974 IBM Corp, 1993 All rights reserved PF3A. Regarding the resistors you hack in a later video to change the bus speed. R174, R175, and R176. My board is configured from the factory to where R174 and R175 are pulled low. That is the same configuration you used when you put a DX2 66 in the second slot. It's really interesting how IBM simply reconfigured one board across multiple computers to fit multiple hardware specifications. I conclude that I REALLY like this motherboard.

Upgraded my 486DX2 with that exact sound blaster CD/card combo back in 1993/1994. If memory serves me, it cost a pretty penny back then. The game called the 7th guest is what made me want to upgrade. Fun times!!

those needles are actually sold! not that i am a tinkerer as this by far, but did see you can use mechanical pencil tips to straighten those

With regards to the Panasonic drive, I bought the same drive for either my original 386sx40 or after I upgraded to a dx2/66. Even though it was a Creative branded drive, you could get them on their own as well, I only got mine as they had ran out of Cr562 models in the shop and I had it plugged into a Aztech sound galaxy 16.

Fascinating.

They're called desoldering needles.

This is the first time I have seen your channel, I like it a lot. I subscribed, I liked, and here is my comment :)

Nice! I found a Creative CR-563-B CD drive just last weekend! Mine is badly in need of some retrobrite work. Great video!

This was my first PC in 1994, just a 486dx33 instead. Interestingly it was sold by IBM with the creative 2x CD-ROM and Sound Blaster 16 already installed + good little amped speakers. I even found the original HDD 170Mo 3 days ago and it was still working though noisy 😂Thanks for the video and memories

Nice work on those pins.

Super cool!

Lovely find that. :)

You know what. I skipped this video because I thought it was an April Fool's joke based on the title and because it was April 1st. I had already seen so many April Fool's videos that day I was just too tired of them. Then I just watched part 2 and find out, this wasn't an April Fool's joke. So here I am to catch up. I guess the joke was on me!

As usual very fun!

With a CPU pin that mangled, I usually just solder on a new one off of a donor CPU rather than spending a ton of time straightening it. You don't even need a microscope to do it on these old CPUs like you do with modern AMD AM4 CPUs since the pins are so large and well-spaced. Still, you did a great job with that mangled pin!

that handle on top looks a lot like later IBM and eventually Lenovo desktops. Current models don't really do it but as recently as the ThinkCentre S30 it had a big nice handle like that, plus one on the back so you could easily lift the whole PC up. More recently on something like the P620 the front is recessed and there's grip extending horisontally from the front.

YT just recommended me this channel, great stuff 👍 Also I was never a fan of the non dip package push sockets either, as I had a clone 486 66Mhz machine back in very late 95 I had gotten 2nd hand that my parents helped me upgrade to a Pentium Over Drive 100 Mhz chip, that felt like it was going to snap while putting it in, along with a few other upgrades so I could run Win 95 for my school work till I could save up a few years later when I finally got my first after school job in summer 98 working at a gas station/liquor store by our house, so after working all summer, and then some I ended up building a 550Mhz Super Socket 7 AMD K6-II based system that I used for a few years on Win 98, and 98se, and because of that I have so much love for this era of computing, and it's my 2nd favorite era after having a Commodore 64(later C128), and Apple IIe sitting on the monster 80's wooden computer desk in my bedroom, with an Epson Dot Matrix Printer that worked with both the Commodore, and Apple machines. 😊

We had a nearly the same computer, Model 2168. It had 66-MHz 486DX2, and another 4 MB RAM was added in the store besides the factory 4 MB, as well as a 210-MB HDD besides the original 130-MB drive. The CD drive was double speed as well, but I don't remember if it was branded as Creative or Panasonic, or whether it was connected to the sound card or motherboard. (Hmm, now that I think, the two HDD's might have taken all the IDE slots on the motherboards, so probably the CD drive was connected to the sound card (SB16).) I have no experience about PS/2's, so I don't know how much they would have deviated from "standard" IBM compatibles, but for my taste the PS/1 was quite non-standard enough. The main issue was that the expansion card slots are on a riser board, so upgrades by replacing the motherboard would have been impossible; even if a standard motherboard would have fitted in, the cards wouldn't have aligned with the openings in the back. The power switch is a "soft" switch, like on modern computers. (Which means, replacing the power supply with a standard one might be problematic.) The PS/1 has feature named "Rapid Resume", which, with proper DOS drivers, worked like the hibernation feature on more modern (Windows 95 and later) computers. I learned about it when a game (Doom or something like that) crashed and completely hung, and since the computer didn't have a reset switch, I had to use the power button. To my surprise powering off took some time, and when powering back on, the computer returned to the same state as before "powering off", a hung game on the screen. I later learned that holding down the power button will force the computer off without storing the contents of RAM. Also, the floppy drive might be a bit non-standard, so replacing it too could be a problem. (When we got the computer, the indicator light on the floppy drive didn't work, so the seller ordered a new one, and it took some time to arrive, so it might have been some IBM specialty too. So, it'd be best to treat the existing components with care; replacing them with standard ones might not work, or might require extra work and knowledge.

You sure that that PC isn't possessed??!! Maybe that's why it's in a church and BOLTED DOWN so it can't levitate into the air! 😵😲😁

I had one exactly the same but the CPU was IBM Blue Lightning 486 equivalent.

I'm doing the exact same thing on a couple of 2168, even ordered the same replacement fan yesterday 😂. One of mine I picked up in superb condition, supplied with the CRT in original boxes, keyboard etc, but missing the Fort Lock chassis access key so had to order a replacement from a US dealer. I have an unboxing video I am yet to upload. This one is upgraded: I have replaced harddrive with two CF (could not get XTIDE running satisfactorily), and CDROM into sound blaster IDE in same way (as only 1 IDE with two channels on main board), also PC speaker split to the SB. CPU fan for its DX. Then a gotek and a ISA network card. The second machine is not in as good condition, lots of dust and rust to chassis and some green stuff on motherboard, does boot but the PSU 'pumps' for 30 secs or so until it gets up enough steam to fully power on unit. It's this one I am cleaning currently so will have to do some testing on that PSU to see what the issue is. I'm new to restoring old PC, other machines are Amstrad PC1640 and Gateway 2000 G6-300. Thanks very much for your great and instructive videos!

@3:24, I guess not everyone was paying attention to "thou shalt not steal," eh?

That handle on the case was carried right into the ThinkCentre line, quite interesting.

Wasn't the purpose of the PS/2 line to make a completely proprietary hardware design that would force manufacturers to license the MCA bus? It really wasn't a leap ahead of the existing ISA bus machines coming out around the same time.

So how is this a Priest's computer? I was watching to show my friend who's a pastor and no mention anywhere.

My first computer was an IBM PS/1 2131 386SX/16, 2mb Ram, and 80mb HDD. Cost about $1800, and the printer was another $250. Had a 2400bps modem which could use to connect to Prodigy. Color VGA with Windows 3.0

IBM did NOT skimp on the steel.

@18:30 a minicanal pencil works great too 0.05 better then 0.07. got a messed up 387 of eBay for 99 cents and bent it back to shape

I had the same ps1 with a 386 33mhz with a missing front plate. I used the ones to db25 printer port software. Then used some No$gb on it because I did not have a game boy.

Maybe put a bit of solder onto the double bent pin, to stabilize and smoothen it a bit.

The design of this PC reminds me of the first computer that I called my own: An IBM Aptiva with a Pentium 100MHz. I know mine was the successor to this line, though.

i just LOVE to see someone stick a fort in psu ROFL lol i already seen someone done it with toaster lol

Exelente reseña 👌

That is the same CD-ROM drive of a 3DO !

A BIC pen can also be used to straighten pins. I use to straight out pins on 486's and Pentiums all the time.

Thanks for sharing those BIOS part numbers. I've been looking for some bins. Would love to have Tom's version shared somewhere. I have an ODP 75 with 16 KB of cache I want to use in my IBM 2155-54.

where is the cross on the pc case ?

I bought one of them sound cards about a couple of years ago, cost me over £100 but well worth it. Mine doesn’t have the hanging bug either.

Interesting, like!

Nice stuff as usual. Be sure to recap that (if I am not mistaken) Teac floppy drive. The motor board specifically with the SMD caps. They tend to leak an I have seen a few A500 drives with destroyed motor boards. PS: Fck ZIP Ram. They are just a blytch. Kisses: An Amiga 3000 wannabe user.

Great vid as always! If you ever want to try to get the zip-memory working,I used this ZIp-ram: HM514260ZP8 for video on the same board sitting in my PS/1 2133, and that worked flawlessly. I also did the CPU bodge on that board after seeing your video on the PS/1 2133. However, I can't find any of those excellent videos any more, have you taken them down?

Great✌

Great video! It seems that around the 4x87 socket there is an extra row and column of pins.... so I wonder are they functional? Is it possible to support pentium overdrive?

I have a very similar machine. 2168-26P. No volume knob and has a Multimedia sticker on the front. 20mb ram and 66mhz processor. Running dos 6.22 and windows 3.11.

Could you link to where you found the hacked bios? I have a ps/valuepoint 425 which seems to have an identical bios

Those are desoldering needles, or at least that's what I've been told that they are.

Are the keys very fragile when they were made or is it because they dry out over time?

TRY SQUEEZING THE BENT PINS WITH NEEDLE NOSE PLIERS TI FINISH THE STRAIGHTENING JOB

You run out of time so quickly!

Secure wipe that HD :p

What about putting for now on part 1 and part 2 in your video’s sothat we will know whether a video about about a certain subject is complete are only part of snother video,other then that, great attempts to restoring stuff.

Snipping metal stuff over electronics is a REALLY bad habit.

Those CD-ROM drives are known to be problematic. The ATAPI version is much more reliable.

A priest that cherishes The Bible has no business using technology like PCs or tablets or smartphones. God would not approve.

mmmm LPX form factor. Total crap design. I have an LPX motherboard machine and it has some unique challenges. Glad they stopped using this form factor.

Remember don't copy that floppy...