iFixit - Answers With Device "Macintosh 128K"

Macintosh 128K: Sad Mac Face & error code 040090

Thu, 15 Dec 2022 12:35:36 -0700

This one got sent into me for repair. I'm getting a Sad Mc face and error code 040090. I don't remember what this code indicates. Anyone have an idea?

⟐ Commented December 15, 2022 at 12:35 MST

Macintosh 128K: Does Anyone Know Where I Can get a Capacitor Replacement Kit

Fri, 20 Oct 2023 08:31:35 -0700

My old sources have dried up on finding these capacitor replacement kits. Does anyone know where I can get them or have them put together or a list of what I need to order from Mouser?

I also need a working 400k floppy drive.

⟐ Answer accepted October 20, 2023 at 8:31 MST

Macintosh 128K: Where to find OS/SW disks for 128k?

Wed, 11 Feb 2015 05:17:39 -0700

IHA 128k MAC and somehow the OS disk is damaged. Any idea where fresh floppies may be had?

⟐ Answer accepted February 11, 2015 at 5:17 MST

Macintosh 128K: How to discharge a CRT without killing myself?

Fri, 23 Nov 2018 09:30:02 -0700

So I have seen other threads on how to do this, but I need a very detailed guide. I have never discharged any CRT before. How do I do this? What tools will I need? Should I wear any special gear/tools?

⟐ Answer edited November 23, 2018 at 9:30 MST

Macintosh 128K: How to fix "out of memory" error

Sun, 09 Jun 2019 07:18:50 -0700

I started up my macintosh with normal system tools disk but it always says out of memory and lets me click restart but when I put my smooth talker disk in it will work but any other disk whether system tools or other applications it will say out of memory. how do I fix it?

p.s. I doubt this has anything to do with it but two days before. I changed the floppy drive to a new one same type and stuff just a new one that works better.

⟐ Answer accepted June 09, 2019 at 7:18 MST

Macintosh 128K: Disk Drive Not Working

Mon, 18 Jul 2016 01:50:33 -0700

After turning on computer, and inserting a disk, the drive doesn't engage and pull the disk in. Normally, you insert a disk and it gets grabbed by the drive and pulled down into the computer. Now, the "grabbing" part doesn't happen. I can't get the disk to stay in the computer.

Don't know if it just needs cleaning or the motor burned out. It kind of wore out.. it started to happen here and there over a year or so before it just stopped working all together. So, it seems to be a mechanical issue and not an electronic one.

Before I take it all apart.. I thought I would pause to see if others had any input on this. Thanks-

⟐ Commented July 18, 2016 at 1:50 MST

Macintosh 128K: Macintosh Classic: buzzing sound

Mon, 30 Sep 2019 09:45:07 -0700

Hi all,

So I have just received a Macintosh Classic from eBay, with a reported failed HDD but upon inspection it's clearly been knocked about during transit. A refund isn't an option as I got it for next to nothing, and I really want to get it repaired.

The issue:

Upon turning it on, there was no display but I got the chime sound. I opened it up to reveal the board on the back of the CRT had come loose, so I reattached it and booted it back up. Not it makes a horrible buzzing (kind of electric) sound, which made me immediately turn it back off. I reopened it and booted it back up to find that the sound was coming from the clear tube that holds the board. Also, you can see faint blue “electric bolts" from said (and pictured) tube.

As the board was off when I received it and I can hear it's coming from there, I think it's clearly something to do with that. But a more educated guess and/or some tips would be fantastic.

I have checked for bulging capacitors and all of the usual things and all appears to be ok visually. As I said before, when the board was off there was no buzzing sound, that only started when I reattached it. But when he sent it, I seen pictures of the same Macintosh displaying a faulty HDD image, so I don't think anything has failed due to natural causes in the time it took to ship it.

It's a Macintosh Classic by the way.

Many thanks in advanced.

Andy

⟐ Answered September 30, 2019 at 9:45 MST

Macintosh 128K: unhappy face on my mac plus

Thu, 12 Mar 2020 10:48:24 -0700

Hi, I have a MacPlus and I am now getting the 030004 unhappy face. I understand thatto be a ram memory problem. I reseated ram a few times with the same result. do you know where I can get replacement ram and operating disk?

⟐ Answer edited March 12, 2020 at 10:48 MST

Macintosh 128K: Sad Mac Face & Error Code 0F003

Thu, 15 Dec 2022 14:24:43 -0700

I found this piece of history on my wife old house attic, I’ve replaced the rear battery, but on start give me this “Illegal Instruction” error.

There’s a way to fix it?

Thank you all

Alex

⟐ Commented December 15, 2022 at 14:24 MST

Macintosh 128K: Speaker makes a ticking noise, no chimes or video.

Fri, 17 Dec 2021 07:19:57 -0700

I’m trying to get my old 128K Mac up and running. All the boards/caps look good. I do not have the backup battery installed but it is on order. However, when I power it up, the speaker makes a noise like tic, tic, tic over and over and there is no chime or video. Any ideas?

⟐ Commented December 17, 2021 at 7:19 MST

Macintosh 128K: Macintosh Classic not booting to Hard Drive (SCSI)

Sun, 18 Oct 2020 06:51:47 -0700

Hello there,

I recently bought a Vintage Macintosh Classic Computer from eBay and when I first booted the machine up, It booted normally to the Hard Drive.

However a few hours later, i booted it up again (4th Boot I think) and it suffered the checkered board screen failure. Then I turned off the computer and then turned it on (kinda panicked when I saw the screen failure). Then after that, it booted normally, only to learn that in the next boot, it got stuck in the blinking floppy disk question mark which it has been doing so ever since.

Now I’m fully aware about this issue, i’ve reset the PRAM and attempted to boot to ROM. It seemed to boot to ROM fine, its just not the HDD, I have some valuable games and office apps there on the Hard Drive (I have no game and application floppy disks, just system and utility ones) and I totally don’t want to lose them.

So I don't know whats happened. I know the fact that the capacitors and speaker are failing but this is an issue I am suffering. I am somewhat new to vintage Macs so I am kind of aware of the dangers of opening a old Mac and discharging the CRT before working.

I’ll provide more information if needed.

Thanks

Nathan

⟐ Answer accepted October 18, 2020 at 6:51 MST

Macintosh 128K: How do you fix a badly-crashing Macintosh (someone else's)?

Sun, 11 Oct 2020 07:48:01 -0700

Someone’s Macintosh 128K on YouTube makes funny sounds with clanking noises, and then crashes on a white screen with the crash sound playing. Does anyone have any suggestions for this person? They will thank you!

⟐ Answer accepted October 11, 2020 at 7:48 MST

Macintosh 128K: Floppy drive keeps ejecting disk

Sun, 01 Mar 2020 08:25:49 -0700

Hi, I tried to boot my Macintosh Fat Mac (upgraded from original 128K. I’m the original owner) and the system disk gets ejected after a a second or two. My Mac does chime when powered up. Its been several years since I booted this Mac but it worked fine last time using same system disk.

⟐ Answer accepted March 01, 2020 at 8:25 MST

Macintosh 128K: How do you discharge the CRT?

Sun, 24 Nov 2019 23:54:01 -0700

I have a Macintosh 128K that I just purchased from Kijiji and I hear a rattling sound. I'd like to open the machine to see if it's something I can easily resolve but based on this iFixit teardown and folks in these comments I understand there are risks due to a capacitor on the CRT. How exactly do you discharge this so that I can safely open the Mac?

⟐ Answer accepted November 24, 2019 at 23:54 MST

Macintosh 128K: Macintosh Classic CRT cathode crackling

Tue, 17 Sep 2019 04:46:28 -0700

Hi, is there anything I can do to fix the cathode in this Apple Macintosh Classic? When powered on there is crackling sparks and a loud crackling sound. No image is displayed. Image links:

https://ibb.co/KmmhS8P

https://ibb.co/Yb6XqsN

Is the CRT done for? It’s a pity because the rest of the computer is quite tidy and in pretty decent condition.

Appreciate the help very much. I have checked a lot of manuals both found nothing with regard to this particular issue.

⟐ Answer accepted September 17, 2019 at 4:46 MST

Macintosh 128K: Where can I take a 128K Mac to get the disk drive repaired?

Wed, 21 Aug 2019 06:19:23 -0700

I just unpacked my 128K Mac which has been stored for years. It turns on and asked for the system disk. The disk drive does not appear to be working when I insert the system disk. It does not pull it in. Is there some place I can take the Mac to diagnose the problem and fix it?

⟐ Answered August 21, 2019 at 6:19 MST

Macintosh 128K: Resurrect Mac512 400KB floppy drive?

Wed, 10 Oct 2018 07:08:46 -0700

Cleaning house and came across my original Mac 512. Hasn’t been fired up in many years, figured I’d give it a try. Good news is the electronics (boards & CRT) are working! Bad news is the floppy drive is jammed in eject position. I have an external 400KB drive, it has same issue. Took the external drive apart and can see, as reported on the web, the original lubricant for all the hinges and sliders has turned to glue. Got it kind of cleaned & loosened up, but not enough to insert/eject freely. I’m certainly willing to disassemble further and keep trying, but also wondering if perhaps anyones knows of a good refurb service for my drives or source for refurbed drives? Thanks!

⟐ Commented October 10, 2018 at 7:08 MST

Macintosh 128K: Computer restarts in the middle of disk boot

Sun, 19 Aug 2018 21:53:22 -0700

I am trying to boot an original Macintosh. I have 4 different bootable disks, each results in a happy face and the computer proceeds to boot from them, but then about a couple seconds into the process the computer resets and goes back to the power-on startup screen.

Any ideas what might be causing this? Dirty heads? Bad RAM?

Thanks!

⟐ Answer edited August 19, 2018 at 21:53 MST

Macintosh 128K: Macintosh Plus Analog board keeps blowing its Fuss and Thermistor.

Fri, 23 Feb 2018 20:22:38 -0700

Hi I bought a Macintosh Plus from Canada ( I'm from Ireland) and plugged into my step-down converter then I flicked the switch on the back and I heard a really load pop, so I opened the machine the 2.5A tube fuse was blown ( black sot inside the tube) and the thermistor at R39 had blown in half. I checked over the Analog board and I cant seem to find any thing else damage besides the fuse and thermistor, so I order 10 Ohm 3A Power NTC Thermistors and I received them today (a month later) I have soldered the new thermistor in and the fuse is still blowing and the new thermistor looked to be slightly damaged at the tip of the leg. I'm mainly wondering if anyone has experienced this before and if so did they find a way to resolve it ?

Cheers.

⟐ Commented February 23, 2018 at 20:22 MST

Macintosh 128K: Why won't my screen turn on?

Tue, 07 Mar 2017 05:44:46 -0700

Whenever I turn on my Macintosh 128k, I hear the startup beep but the screen doesn't turn on. Sometimes it flickers but that's it. Does anyone here know how I could fix this?

⟐ Answer accepted March 07, 2017 at 5:44 MST