Sometimes you can't go to bed because you "just gotta know!"

Adrian’s Digital Dungeon! Would make a great 8-bit adventure game.

handful of semi useful things to know - the ROMs in Macintoshes use the standard 27XX ROM pinout, so you can easily replace the ROMs with 27C512 EEPROMs if you wish. Additionally, an 800K drive *will* work with a Macintosh 128/512 with the original 64K ROMs. It will only be able to boot from 400K MFS disks, but, once booted, the original ROMs can read 800K formatted MFS (but not HFS formatted) disks. Try it with a floppy Emu and a 128k!

You have become one of my favorite youtube channel content creators. Your personality and presentation are superb. You communicate clearly and concisely and your passion for your work is second to none. I also love that you deal with "vintage" hardware and you make them come back to life! Adrian, please keep up the great work and I wish you the best. I own my original C64 bought new in the early 1980's that I bought to get me through college term papers and I could not have done as well as I did without it. Kudos for all you do!

ngl, "Mac's a Million" is a pretty clever name.

The power supply issue is one of them prime reasons why it's always a good idea to make sure everything is working before doing diagnostics, just as you'd point out when doing C64 repairathons, chasing a fault that isn't actually on a piece of hardware is such a pain to deal with, and the facepalm of discovery often hurts... :P

Those "minaral deposits" could probably be easy removed using EvapoRust (as well as the rust itself).

Enjoyed the late-night power-supply shenanigans! Didn't see that twist coming at the end, lol!

The white residue is ionic contamination. According to Chemtronics, "if not completely removed during cleaning, these ions can establish a continuing corrosion cycle, producing more lead chloride and lead carbonate (white residue) and hydrochloric acid, which will attack the copper in the board laminate." You get it from old flux used back in the day if you try to wash it with hard water. They sell a special solvent just for cleaning this white residue (as well as old, crusty or sticky, hard to remove flux.)

Adrian White must have sneaked into the basement during the day and removed the +12 pin from that power supply adapter board.

OMG. I love that you don't hide mistakes. It makes me feel more human when I do the same...

Troubleshooting past 1 in the morning and adding addendums to addendums. That just sounds like peak Adrian to me! 😝

Oooh! Adrian after dark!

Hi Adrian, always enjoy the video's. Before all the work removing the mods for the ram expansion, can you swap the two boards over too see if the working ram board works on the corroded mother board then if the corroded ram board works on the working motherboard, to see if it's the expansion or motherboard causing the fault.

47:45 some time later ... Adrian will find the metal sock of the connector on another board, hehehehehehhehe

This 'Darkmode Adrian's' is awesome! Please keep dark mode enabled! :D So cozy!

Enjoy all your content. With how easy it was to remove the ram expansion board I was surprised that you didn't try swapping the ram boards to see if the fault was on the ram boar or motherboard or both.

The night time, is the right time for hacking.

Easy to go down the rabbit hole troubleshooting vintage computers!

Ah, Adrian, you have learned the very important lesson in debugging-QUESTION EVERYTHING! ;-) Love it. Keep up the great work. I especially love that you kept at it until you found the root cause. I can’t tell you how many nights I’ve stayed up doing exactly the same thing. Every once in a while, you’ll go to bed out of frustration, get a terrible night’s sleep, only to wake up and go, “duh”, and the problem will be solved instantly… It’s how the mind works… Don’t question it-just go with it. It’s a beautiful thing…

Thank You for all of the info that you have given us on this particular Mac upgrade. Mac's A Million is the coolest name for an upgrade ever!

*Sigh...* Adrian, Adrian, Adrian... OK, just a few things about the Mac and even Lisa (Mac XL). Note: Anything mentioning the Mac 128/512K also includes the Lasa (Mac XL) 1) The Mac 128 CAN accept 800K Double Sided Drives. and Boot from it. The Issues are: A) ROMs The non Enhanced ROMs used in the 12*/512K Maca can only use System 1 to System 3.2/Finder 1.1 to Finder 4.1. It can not use System 4.2 to System 6.0.8 / Finfder 4.5 to Finder 6.1.8... BEcause ... B) You have two flie formats to deal with: Macintosh File System (MFS) and Hieracrhical (sic?) File System. The MFS id a flat file system like on the old 8-bit systems with "fake" directories. HFS has true sub director trees. 2) In the past people tried to mix and match format with utter failure. MFS is for the older System 1.0 to System 3.5, HFS is for System 4.2 to system 6.08. System 7 uses HFS+ which is still compatible to the with HFS and Bootable on the Mac with newer ROMS. Putting on an older system onto a newer format, you just get a disk that will attempt to boot and then crash. Same if you put the newer system onto an MFS formatted sik, it will attempt to boot and then crash. Also, an older system disk (MFS) will not be abe to read the file content of the HSF disk. The newer HSF system can read an MFS Disk but can not write to it. If it does, it will scramble the directory. The Newer ROMs found on the 512Ke and Plus will read, boot and write from a older MFS System Disk so there is some compatibility there with older apps and files. HFS can ready MFS floppies but can not write to them or (again) it will screw up the directory. But you can read from a MFS Disk and copy it to a HFS Disk. That is a saving grace os some sort... The old days of the B/W Macs were basically the Wild Wild West days of Macintosh. Even back in the early 1990s, Jobs ended use of the Floppy port on Color Mas, he told parts makers to stop making the DB-19, used in the floppy Port. Some did, others didn't. making the part obtainable but expensive. My ol friend and Mentor (RIP) Dr. Hank Levinson , figured out that you can take a Serial Port DB-25 and cut it down and shape it into a DB-19. It took a lot of work but it was doable. You an even cut the hood into shape an d lightly solder the pieces together. A lot of his repairs and modifications are on the Apple II Newsgroups, which aere google searchable. So for us, at the time he made DB-19s because they are also used on the newer Apple IIe/c/gs as well as the Macs. And just remember one thing, Adrian... What ever gets you through the night, is alright.

Love the nighttime vibe! 🌃

Pebkac, thank you for the video!

I dig the nite time feel! A fun change

Thanks for another awesome video Adrian, Mac videos always remind me of high school even though those were Classics I used. I remember seeing the older Plus models in a storage room in the back. I'm sure if they could feel they would show a sad Mac icon being forgotten in the back like that just like this failed Mac. Electronics is surprisingly robust, but it isn't invincible. Enough bad treatment and recovery becomes a chore. It's rarely impossible, but the level of difficulty increases with each component that needs replacing or repairs.

never seen rivets either, good to know! great video as always!

I really like the color in the background.

Back with another one of them block rockin' addundums

Really enjoyed the late night video!

Looking forward to the next video on the second motherboard will be interesting to see the extent of the water damage

Awww, what a nice vibe!

you're so smart! what fun

Love the late night motif … and as always …. Riveting!

26:43 i didn't know those were riveted either.... Always assumed they were flooded with solder, it's so clean looking for a rivet.

very comfy!

Love the nightcore basement!

Thanks for the encores! LoL

Hilarious ending to this video. You couldn't let go of the problem this late at night. Hahaha, so funny 😂 Maybe that missing connector pin from your Pico is still somewhere in another Apple motherboard.

ok the 43:00 moment is great and so relatable :D as is the later addendum, finding your own mistake, thinking that's it, it isn't, then finding another mistake that's the actual problem

Perfmount

20:47 Looks like the board was designed or manufactured in Seattle, Washington. Just to the right of the "Inc" part of the company name, between the P and C, is the top of the Space Needle.

Now I was thinking, if you don't have a case the motherboard could go in, maybe build a Mega-mac with an enlarged case that *looks* like a classic mac, but has multiple drives and an LCD screen. Yeah, I know, that's more like something Sean would do over on ActionRetro.

Nice!!

25:35 its almost like those connectors became sacrificial anode and stopped the rest of the thing from rusting, it probably wasn't soaked in water too, just the outside of the chassis.

Totally loving the after hour mood!

Great stuff Adrian, another very enjoyable video, but careful with all this classic Mac stuff you're going to make me want to get one too!😂 Love the after hours vibe and the never ending addendums, now go to bed!

I like the 'After Dark' vibe nice to watch while in bed.

ZAJEBISTY TEMAT "After Dark"! Lubię sobie czasem po zmroku usiąść i podłubać w ulubionym sprzęcie 😎 Keep up the awesome work and keep'em coming!

I have that same power supply solution for an SE/30 board in a custom case I made for it. I didn't butcher an SE/30, I got the board only that had been "worked on" that I had to actually repair. I don't have any Macintosh chassis, my classic Mac is a iici that I use along with my iigs, so I just designed a case similar to the iigs and printed/fabricated everything needed. The funny thing is, with color through a card along with all the other possible upgrades I could manage to get it's actually a surprisingly strong machine (or maybe not surprisingly, for me that has only used a couple original Macs and a base model Classic it feels like a whole different experience to say the least).

Adrian After Dark

The chemical "CLR" is a perfect job for this mess. It should remove the Calcium, Lime and Rust caked on it.

Hardware like life finds a way.

Welcome to Adrian's Digital Basement After Dark. Hehehe...

The field found machine was way worse for wear. I think you can get both of these working.

My family had a 512Ke with an HD20 and it absolutely worked, although most of the time we used the floppy style HD20 with Mac Plus (and yes I know it would have been much better to use a SCSI drive with the Plus).

Does anyone else get excited when they see a new video?

I wish I could give this video multiple thumbs up for the addendums :-)

Great vid 👍 we live and we learn by our mistakes 👍

Not to beat a dead horse...You could try the RAN upgrade card from the non-working board on the one that actually boots. That would at least tell you whether it works or not. The connectors are already there. It wouldn't be too hard.

"But wait, there's more!!!" :D

Retro Hack Shack guy will be litigating you for the "after hours" theme.

I have a macintosh nubus video card from 1989 that maybe a prototype you can add more vram to it as well seems to be rare.

I wonder if you missed soldering it, and when you pulled it off the other mac, the contact got yanked down into the connector housing.

At the opening I am thinking. “Adrian Black in Black”

ADB² After Dark...we gotta find you an old copy of the original After Dark screensaver.

Happens to me all the time. PICNIC - Problem In Chair, Not In Computer. 😉

Shellite / Naptha will probably do a good safe job of removing that residue.

(continues watching just in case there's a third appendum....)

Hi love your videos. I have an extra mac classic CRT tube and that looked great but the damage to the classic motherboard was very bad, unrepairable. If you are looking for a tube, I am looking for a working keyboard for an Atari 800XL may be do a trade?

This is the dankest Adrian content. Unhinged with the late night second channel content full of follies and jollies. Love it.

Rust Converter will help the ports on that one.

You have to remove the corrosion. You can't do that with water. Many products out there. Even things like deoxit have acid as an ingredient.. You can totally remove that corrosion. Liquid Tin - I used to pour this over my freshly done circuit boards. You can do that after removing the corrosion. But you have to remove the corrosion first.

Adrian, I have a bottle of Deoxit 100L (different from the spray you use) that I want to send you. It's so much better. Also, You might want to try some Rustoleum Rust dissolver gel on those d sub jacks. The dissolver gel contains phosphoric acid (like in coca-cola) that converts iron oxide into iron phosphate which is easily removed from the metal. I have used it on some rusty DIP chips with success.

Heh. You could put the motherboard, with the adapter, into a clear acrylic shell and have it as a "minimalist mac".

Would giving the boards a soak in CLR help with the corrosion

Hi Adrian, I would like to see a Video where you put this motherboard in a 3D-printed classic Macintosh-Case with a LCD-Screen and maybe modern keyboard and mouse attached to it...???? Please....

Adrian Black After Dark! 😂

Maybe try swapping the ram expansion boards

Just an idea, but since you don't have the original case and screen, what if you made a portable/luggable or custom form-factor out of it? Cram the motherboard, PicoPSU, RGB2HDMI, and an LCD into another case from something with a dead LCD/motherboard. Maybe even a modern style iMac, the 2010 era iMacs are easy to get for cheap.

I want to see a compact mac run from a lithium ion battery and or usbc hacked in place of the original psu

to test the sound/audio remove the headphone jack and solder wires to another jack or phono connectors?

After dark? Where are the flying toasters or fish?

Thanks for always providing riveting content 😜 actually tho

@36:00 Yes, you could run System 7 from the HD20. The question is rather if System 7 allows a 512ke with additional RAM to run it.

12:21 its because it got "enshrouded"

What do you do with all your restoration projects after the fact?

Could you test the other expansion board on the working system to confirm if it works?

Vote for new channel: Adrian's Basement After Dark [III] ;-)

Isn’t pin 2 on the Mac plus logic board empty? Pin 10 is +12v ?

What is the Zilog chip on the board?

The Late Night Show with Adrian Black. The show that never ends 😁

Tactical paperclip.

why did you not swap the ram boards between the two ?

why not take the memory expansion from the known working 128k board and try on the 512k board? or try the questionable memory board on the known working 128k motherboard?

Just connect second memory boart to the first motherboard?

It happens when you work after midnight that some silly mistakes happen, the other day my monitor started going into a black screen. So I unplugged it and reached for the spray can of contact cleaner, but because I was a bit tired I didn't quite read what was written on the can. It didn't say contact cleaner but contact glue. #&%!. Big error 40. I wouldn't recommend it, but there hasn't been a loose connection since. In Danish, error 40 means human error, the error is 40 cm (16 inches) from the screen. Are you also saying "error 16"?

so what time *did* you get to bed in the end? 😅

obligatory pun: it's a macintosh, so it should stand the rain fwiw...!

i wonder how much nicer it would look if soaked in Evap-o-rust..