iFixit - Answers With Device "Macintosh plus"

Macintosh plus: Rifa capacitor replacement on macintosh

Sun, 01 Feb 2026 15:02:16 -0700

Hey dudes, my rifa capacitors on my 1986 macintosh plus finally went up in smoke. I would like to know if there are any rifa cap replacments online. Playing the Oregon Trail on my Mac was one of my favorite things to do and I would love to start playing again. If you guys have any recommendations, I would be super grateful. Also, can I still use my Macintosh with blown rifa capacitors? Stupid question but just wanted to know!

⟐ Commented February 01, 2026 at 15:02 MST

Macintosh plus: My Macintosh plus floppy drive runs continuously and won’t eject

Thu, 22 Jan 2026 18:13:50 -0700

When I turn on my Macintosh, it makes a weird noise and every time it makes noise it the inside little thing spins around and stops for a second and then continue spinning around and stops, and when I try to put a system floppy disc in it it will not work and show the red X screen while the thing continue spinning and won’t eject

⟐ Answered January 22, 2026 at 18:13 MST

Macintosh plus: Macintosh Plus Trouble shooting.

Fri, 21 Oct 2022 06:13:12 -0700

I have had trouble with this machine a lot but i need a little help.

I noticed some broken solder mask and broken traces but i know those traces are not important because they go to the battery compartment. But i need to know why wont it start. When i turn it on it makes a Hi voltage sound. Like a Click-THUMP sound and then nothing happens. Sometimes it does it over and over again or just once.

When i power it off after the sound/s then power it on again the sound does not happen and there is no sign of life!

SYMPTOMS: A HI Voltage Click-thump sound , no startup BONG, No video or sound , and a black screen.

Also can someone give me the list of capacitors on the analog board?

These are some broken traces

NOTE: not my image!

⟐ Answer accepted October 21, 2022 at 6:13 MST

Macintosh plus: Analog International parts are causing confusion

Sat, 14 Mar 2020 11:00:34 -0700

Does all this sound correct this system does not work?

Analog seems to be 120/240V international MACINTOSH 630-0108 1983-84-86 it also has an orange sticker that says 630-5289 240V but the board still has w12 still installed.
The analog cover has 120V with W12 still in place checked

# Logic is a 820-0174-c 1986 630-4122-[|||||]

The computer is a MACINTOSH PLUS 4MB 120VAC
MONITRON Taiwan R.O.C 157-0042A
Tell me if all of this sounds correct?
Also, what does R10 on the log board used for?

⟐ Commented March 14, 2020 at 11:00 MST

Macintosh plus: Dead Macintosh Classic M0420

Mon, 11 Aug 2025 13:19:07 -0700

I found in my cellar a Mac Classic M0420 (belonging to my dad).

I tried to restart it, but it won't give any sign of life.

I disassembled it, and the different boards do not show any signs of damage (no capacitors or battery leaking). It looks like something related to the power supply. Do you know how I could test the capacitors on the logic board without having to extract them?

⟐ Answered August 11, 2025 at 13:19 MST

Macintosh plus: Sad face mac error 0143B8 on power up

Sat, 23 Sep 2023 09:41:44 -0700

I have a yard sale Macintosh Plus with external DirectDrive20 by Jasmine. When I turn it on, I get a sad-face Mac error code of 0143B8. I haven't been able to find this code on the internet. Can anyone tell be the bad news on this one?

⟐ Answer edited September 23, 2023 at 9:41 MST

Macintosh plus: The monitor is bright and has horizontal sweep lines?

Sat, 24 Jun 2023 07:23:08 -0700

Hi, i have Macintosh Plus with the same trouble. How did you managed with this problem?

⟐ Commented June 24, 2023 at 7:23 MST

Macintosh plus: Can I retrieve my old data from the MacintoshPlus or Micronet hd?

Sat, 15 Jun 2019 14:50:20 -0700

My first computer, a Macintosh Plus was connected to MicroNet hard drives and they worked for a long time and printed to an ancient ImageWriter. But the Macintosh Plus/Micronet set up recently failed and the old MacWrite files cannot be retrieved. I would like to retrieve some personally important data. The data is also present on a floppy disk (in a MacWrite application). Can you help me?

⟐ Commented June 15, 2019 at 14:50 MST

Macintosh plus: Why is my Macintosh plus displaying these strange lines?

Mon, 17 Dec 2018 14:22:06 -0700

It starts up with the normal BEEP and then slowly shows and image. But is shows these strange lines up and down the screen on top of the image. And the screen is black and not gray. And yes the floppy disk is there and it has a ? in it. This image here looks the same but it has lines going thru the floppy disk and not behind it.

Also it has grey on the screen and mine has black. Idk if this is important but when i hold down the interrupt button it shows a line going down the screen and i think that its the lines i see slowed down. It looks like when you record a CRT and a line going down appears.

⟐ Commented December 17, 2018 at 14:22 MST

Macintosh plus: Can I take case off only and still be safe?

Thu, 06 Dec 2018 18:30:23 -0700

I want to take off the rear of the Macintosh plus case and still be safe? i only want to take the back off and clean it. I dont want to touch any of the components.

⟐ Answer accepted December 06, 2018 at 18:30 MST