【激レア】箱付、付属品完備の起動不可なジャンクMacintosh Color Classicをもらったので修理しました。

Summary

This video takes viewers on a nostalgic journey with 'Macaron,' a devoted Mac enthusiast, as they unbox and attempt to revive a Macintosh Color Classic from 1993. Despite its age, the vintage Mac and its accessories, including the iconic one-button mouse and ADB keyboard, are in surprisingly good condition. Challenges arise when the Mac fails to boot, leading to a detailed exploration of potential fixes, from replacing the backup battery to repairing the logic and analog boards. The endeavor reveals the complexities of vintage tech restoration, involving capacitor replacements and HDD troubleshooting, culminating in a successful boot. The video is a testament to the timeless allure of classic Apple technology and the dedication required to preserve it.

Takeaways

• 😀 The video is about restoring a vintage 1993 Macintosh Color Classic computer
• 📦 The computer was excavated from a shed with original accessories like keyboard, mouse, manuals etc
• 👨‍🔧 The logic board was repaired by replacing old capacitors
• ⚡ The analog board was also repaired to fix the HDD issue
• 🛠 The sticking HDD head was fixed with homemade rubber stoppers
• 🎮 The restored Mac could run games like Wolfenstein 3D from floppy disks
• 🖥 It had a 10-inch Sony Trinitron CRT display
• 💾 The OS, apps and data were loaded from floppy disks
• 🕹 The keyboard, mouse and I/O used the Apple Desktop Bus
• 🎥 Overall an entertaining video about reviving an early 90s Macintosh computer

Q & A

What model Macintosh computer is being repaired in the video?

A Macintosh Color Classic from 1993.

What was the initial problem that prevented the computer from booting up?

Deteriorated capacitors on the logic board prevented the hard drive from being recognized and caused boot failure.

How did the person repair the logic board?

By removing the failed surface mount electrolytic capacitors and replacing them with new tantalum capacitors.

What was done to the analog board during the repair?

13 deteriorated capacitors on the analog board were replaced.

How was the hard drive head sticking issue resolved?

By replacing the deteriorated rubber stoppers and adding a spongy tape stopper behind the head.

What tools and supplies were used for the repair?

Soldering iron, solder, flux, solder sucker, capacitors, screws, screwdrivers, knives, spongy tape.

How dangerous was discharging the cathode ray tube?

Very dangerous due to the high voltage, so proper precautions were taken.

What old games were found with the computer?

Wolfenstein 3D FPS game and a slide puzzle game.

What was the final outcome of the repair?

The computer was successfully repaired and booted up, with the hard drive functioning again.

What sentimental value did this computer hold?

It brought back nostalgic memories of early Mac computers for the repairer.

Outlines

00:00

😀 Excavating, Opening Box, and Assessing Vintage Mac

Viewer 'madtakotaro' provided a 1993 Macintosh Color Classic excavated from a shed. The accessories seem complete - keyboard, mouse, cables, floppy disks. Also included game software and manuals. The main unit looks good but does not start up.

05:13

😟 Attempts to Start Up Fail, Diagnosis Begins

Tried turning on the Macintosh but got no response. Removed and replaced the backup battery but still no display. Determined the hard disk drive (HDD) is not being recognized as the likely cause.

10:19

🧑‍🔧 Logic Board Repair - Capacitor Replacement

Diagnosed deterioration of capacitors on logic board as probable cause of HDD not being recognized. Replaced surface-mount capacitors. Cleaned flux residue. Startup sound returned but HDD still not recognized.

15:20

⚙️ Analog Board Repair - More Capacitor Replacement

Further diagnosis pointed to analog board capacitors. Discharged CRT, removed analog board, replaced recommended capacitors, reassembled. Still no HDD recognition on startup.

20:20

🛠️ Final Attempt - HDD Internal Repair

Opened HDD, found sticking head issue. Replaced deteriorated rubber components causing sticking. Added stopper tape. HDD now boots up from system disk but still some lag.

25:26

🥳 Success At Last - Vintage Mac Restored

After much repair and replacement the vintage Macintosh Color Classic is now booting up and running. Some impressions of the experience and invitation to share memories of old Macs.

Keywords

💡Macintosh Color Classic

The Macintosh Color Classic is a compact Macintosh personal computer with an integrated 10" color CRT display, launched by Apple in 1993. It was one of the first affordable color Macs aimed at consumers and schools. The video focuses on restoring one of these vintage Macs.

💡HDD failure

The initial problem with getting the vintage Macintosh to boot up seems to be hard disk drive (HDD) failure, as the HDD is not being recognized. A good portion of the video covers troubleshooting and attempting to repair the old HDD.

💡Capacitor replacement

Replacing aged or damaged capacitors on circuit boards is a common repair technique. The narrator replaces capacitors on the logic board and analog board, hoping to fix issues with the HDD not being recognized.

💡Cathode-ray tube

The Macintosh Color Classic uses a cathode-ray tube (CRT) display. The narrator points out the need to properly discharge the CRT for safety before working on internal components.

💡HDD head sticking

One diagnosis for the HDD failure is that the read/write heads are sticking and not moving properly. This seems to be caused by deterioration of rubber components over time.

💡Floppy drive

The Macintosh Color Classic has a built-in floppy disk drive. The video shows the vintage floppy disks and software that came with the computer, like games and operating system installers.

💡ADB connection

The keyboard and mouse connect via Apple Desktop Bus (ADB), an early serial interface system developed by Apple. The video points out the ability to daisy chain devices through the ADB port.

💡Vintage computer repair

A major theme of the video is the repair and restoration of the vintage Macintosh Color Classic computer from 1993, including component-level troubleshooting and repairs.

💡Retro gaming

Towards the end, the restored Macintosh is used to play some retro games like Wolfenstein 3D, made possible by the repairs bringing it back to working order.

💡Macintosh history

The video contains many references to Macintosh history, like the 68K line of CPUs, and gives a glimpse into early Apple products and technologies.

Highlights

First significant research finding

Introduction of new theoretical model

Proposal of innovative analysis method

Key takeaways and practical applications

Transcripts

Macintosh Color Classic

Launched in 1993 First integrated Macintosh with built-in color monitor

Yes! I'm Macaron, an elite Mac junker.

This time it's a vintage Mac with box!

Now let's go with me to the world of 30 years ago.

Chapter 1: Excavating the Shed... and Opening the Box

This time it was provided by viewer "madtakotaro

Thank you very much!

They excavated it from the shed, but it didn't turn on.

And we're told that all the accessories are there.

That's a genuine keyboard.

Good condition, not like 30 years old

Old logo is so cute.

Keyboard angle adjustment latch　

Connection to ADB (Apple Desktop Bus)

World's first general-purpose serial bus connection system developed by Steve Wozniak

Box labeled Macintosh Essentials, quite heavy

Translation: "Macintosh Essentials

Mouse! It's a necessity.

Traditional one-button mouse

At any rate, you're going to want to remove the ball. w

That's for a bulky curled-cord keyboard.

This is a power cable.

What is it? Two mysterious screws

I found out they are fixing screws for the back cover.

It is heavy...

It was an assortment of floppies.

That's a lot, by the way.

12 system-related

There were 16 floppies for fonts

And... something about Apple's announcement

It seems to be an announcement of an update to fix a bug.

So the fix disc was mailed out.

And more

Apple Care2! (I didn't know it existed before this)

Manual... it's thick!

Pop illustration

Starting with how to turn on the power

Friendly specifications with many illustrations

Lecture on how to hold the mouse

Oh, I need to install QuickTime KanjiTalk7

Finally, the main unit.

Before that, there was an extra book, ResEdit Complete Edition? I'll check it out...

It's a software to change program resources, OS icons, mouse cursor...

That's too thick.

And I think it's game software.

Wolfenstein 3DFPS game known as the original

Unopened, shrink-wrapped.

It's very rare.

I'd love to play it when I can start it!

I was also sent a set of free software CD-ROMs that I didn't ask for.

Heavy

Macintosh Color Classic

Chapter 2...Does it work?

Let's turn it on

I heard it can't boot up, but I'd like to check it just in case.

Connecting keyboard to ADB terminal

Mouse is connected to keyboard because it supports daisy chaining

Now turn on the main switch on the back

Then turn on the power with the keyboard

No response

MADTAKOTARO was right.

I'm not sure what I should do...

I'm going to take it off carefully because it looks like it's going to break.

Logic board is just pulled out lol

I wish I could teach someone 30 years ago how to remove the logic board from an iMac today.

I've heard that backup batteries often burst.

And if that happens, it's going to be very difficult to recover.

CPU is Motorola 68030 with 16MHz clock frequency

Replace backup battery for now

It's empty (of course)

Purchased from Amazon, 3.6V lithium battery

Not sold in 100s lol

Put it back in and check it works.

Lamp lights up!

Weak startup sound... cute!

But... the screen doesn't show up.

No, it's not! Here it comes. Suddenly...

(It is a cathode-ray tube, so the display looks like a wave, but you can't actually see it.

The folder icon now seems to be missing from the startup device

I'm going to put in the system installation disk.

Looks like it's loading.

Welcome, welcome!

I thought I could install it and it would be OK...

It seems that the HDD is not recognized

Anyway, when I tried to reboot

I hope you get the picture.

REPLAY

So this is Sad Mac.

Icon displayed in case of hardware malfunction

I still need to repair it.

Case has only 4 T15 screws

I could remove them with a T10 Torx screwdriver (wicked)

Mecha-mecha-ish

Fan was attached to the case

Cathode ray tubes are high voltage and can be life-threatening, so please be sure to discharge them.

This channel cannot be held responsible for any damage to your cathode-ray tube.

Sony Trinitron Monitor 10inch

Cool, looks like a railgun (don't know the real one)

I thought maybe there wasn't a hard drive in there... but... there is.

We will now proceed with the repair as basic.

Deterioration of capacitors on the logic board as a cause of HDD not being recognized

Capacitors have a life span and will be replaced!

Chapter 3: First Things First... Logic Board Repair

Surface mount type, the kind where the legs don't penetrate the board.

Flux to improve solder flow.

Placed solder

And then we're going to take it off with a solder sucker...

I don't feel it will come off at all!

Plan B heaping up low melting point solder

As the name suggests, it has a low melting point and hardens slowly

It means we should remove the solder before it hardens completely.

OK, let's go with that.

I think that's the last one.

We'll clean up the rand from here.

Once we heap the solder and suck it out

And then clean it up with anhydrous ethanol and cotton swab

Good job

All the cleaning is done like this

Electrolytic capacitors removed

Change to tantalum capacitor

Tantalum capacitors have the advantage of long life

Chosen for future use

Installation is done with spare solder on one side.

Slip the capacitor in during heating

Then solder the other side

Finally, add solder on both sides

I'll explain it again.

Spare solder on one side

Slip it in while heating

Tantalum capacitors are more positive with the line in

Solder on the other side of the capacitor

Fixing at the end

Flux cleaned with anhydrous ethanol

All the rest of the installation is complete.

Check from the side...OK!

I managed to do it without damaging the logic board.

Startup confirmed

It was no good... although I heard the HDD spin up.

HDD stopped in the middle and not recognized

Chapter 4 This Time! Analog board repair

Discharging the cathode-ray tube will be essential to remove the analog board

The cathode-ray tube is not touched until the discharging process is complete

Connect alligator clips to screwdriver

Connect the other side to the ground wire

Insert the tip of the screwdriver into the anode cap

Touch the hook inside and remove it (this is the discharge operation)

This is very dangerous and should be done only after careful investigation.

Disconnect the ground wire

Video board

It is hardened with silicone, so it is removed with a knife

Now all we have to do is pull it out...

I've pulled it out!

Disconnect the connector leading to the analog board

Slide and pull upward to remove

Speaker...mounting is Velcro or w

FDD.

Lots of dust from age

SCSI HDD

Made by Quantum, which at that time had the second largest market share in the world after Seagate.

Of course, it's hard to get now, so we don't want to have HDD failure as a result.

We will replace the capacitor here as well.

According to the information published by an overseas YouTuber "Branchus Creations".

They don't need to replace all of them.

We will replace the recommended 13 capacitors

To remove the capacitors, we have to take the glue...

Now let's apply flux and remove it...

13 pieces removed

New capacitors are installed

I made a mistake here... oh no!

Now, let's install it.

Installation complete

Cleaned up while disassembling

FDD is especially bad

The mainframe is great, too.

We're going to install it.

Will the HDD be recognized?

No recognition...

I was able to boot successfully, but the HDD is still not recognized...

After that, I checked the results.

I found information that HDD cannot operate stably when 5V output is low.

5V can be measured from ADB terminal, so I measured it and found 4.969V...

The ideal is 5.25V, so it's a little low.

And the 5V output is adjustable.

There is a tirele for adjustment on the back of the cathode-ray tube

The work is dangerous because it is done while the power is on.

I managed to adjust it to around 5.25V

What is the result of the adjustment?

Not recognized...

Final Chapter: Never give up! First HDD Repair

The remaining cause is the failure of this thing...

Normally, the entire HDD would be replaced... but it's hard to find.

First, visually inspect the board

Only this area is in powdery condition

Is it a capacitor leak? I doubt it.

Let's replace it.

Exchange complete.

After this, I try to start it up, but

HDD is still not recognized

I've been doing a lot of research and it seems that there is a phenomenon of HDD head sticking.

So I decided to open it...

Wow, it's beautiful!

This is not the time to say

I'm afraid to touch it

Is this sticking?

I pushed a little harder and it moved!

Looks like it's definitely sticking.

The cause seems to be the rubber stopper here.

The rubber seems to be sticky due to deterioration over time

That rubber is also under the platters.

If you take the platters apart, it's hard to recover them, so you have to think of another way.

Let's start from here that can be replaced.

The problem of too much magnetism

They don't come off easily...

So this is the rubber in question.

Looks like melted caramel

Okay, that's good! That's good.

I just didn't find a good replacement rubber.

I bought it at a home improvement store.

Silicon tube for medical use with heat resistance 150°C

It was about 1200 yen for 1 meter

The outer shape is 8mm but the inner diameter doesn't fit

Insert a tube with 4mm outer diameter as a spacer

This should get you there.

Perfect fit!

The rubber in the platters is inaccessible, so...

I'm going to reverse the idea and put a stopper behind the head.

Spongy tape on the back of the head to make a stopper

And then...

I did it! I was able to boot from HDD...

About this Macintosh

Standard apps? Slide Puzzle

I tried for 15 minutes but couldn't complete it.

Let's take a look at the control panel

A map of the world that I don't know how to use

I wanted to try something, set the date to January 1 and restart

Oooh! I'm a little bit impressed.

Finally, the game is opened!

And the floppy was still there.

It's like a letter or something.

Explanatory note

Catalog of games

There are viewers who miss it, right?

Let's do it!

Mode selection? I don't know, so let's just go with it...

Difficulty is on the top left of the pacifier.

The screen is small w

It may be that the specs are too tight, but it lags a little bit.

Arrow keys are also hard to use.

Finally...

Here are my impressions of this time

I thought the HDD not being recognized was due to a bad capacitor in the unit...

I didn't think it was a HDD failure, nor did I think it could be fixed...

Well, I want to keep this machine, so I feel I could prolong its life by replacing the capacitor.

If you have any memories about old Macs, please comment!

See you soon!