Lisa Troubleshooting and Repair

CPU Error 40 during POST (MMU issue)

Started by ried

Replies: 1
Views: 35,327

March 16, 2025, 02:46:54 PM
by sigma7

CPU board versions and revisions?

Started by bmwcyclist

Replies: 0
Views: 32,421

March 23, 2025, 06:45:06 PM
by bmwcyclist

CPU Board Debugging - White Screen

Started by fri0701

Replies: 10
Views: 66,626

January 29, 2024, 01:29:33 PM
by sigma7

CPU 42 error...

Started by bmwcyclist

Pages1 2

Replies: 18
Views: 112,413

March 23, 2025, 06:45:49 PM
by bmwcyclist

Can you operate a Lisa without an I/O board?

Started by stepleton

Replies: 5
Views: 44,760

March 26, 2023, 11:21:27 AM
by ried

BLU LLF Failing

Started by blusnowkitty

Pages1 2

Replies: 15
Views: 93,822

January 04, 2025, 11:58:26 AM
by mikerofone

BLU and Priam Datatower puzzlement

Started by Al Kossow

Replies: 13
Views: 70,452

June 24, 2024, 01:48:22 PM
by Al Kossow

Black screen on a Lisa 2/10 Mac XL

Started by Lisa_in_Paris

Replies: 2
Views: 34,605

December 19, 2023, 10:10:24 AM
by fri0701

Asante' EN/SC and MacWorks+II, Sun SCSI, address error

Started by bmwcyclist

Replies: 5
Views: 45,058

October 17, 2025, 01:41:13 PM
by sigma7

Apple Lisa Widget Drive Help

Started by Max1227

Replies: 6
Views: 75,223

January 31, 2021, 04:23:22 PM
by mactjaap

Apple Lisa Scrolling and Jumpy Display

Started by AlexTheCat123

Replies: 12
Views: 116,508

May 06, 2020, 08:19:04 PM
by AlexTheCat123

Apple Lisa PSU error 47 on cold boot

Started by ried

Replies: 8
Views: 53,643

September 01, 2024, 06:07:04 PM
by ried

Apple Lisa 2 I/O board problem - garbage on the screen

Started by greniu

Replies: 13
Views: 131,986

April 14, 2025, 02:28:02 PM
by sigma7

Apple Lisa 2/10 starting up with Profile only; red light stays on

Started by mactjaap

Pages1 2

Replies: 22
Views: 147,884

March 18, 2021, 06:14:47 PM
by compu_85

Any way to get your hands on a replacement for I/O board RP3?

Started by stepleton

Replies: 7
Views: 53,272

October 04, 2022, 04:22:25 PM
by stepleton

Another cautionary tale... a missing card stop brought down my machine

Started by ried

Replies: 2
Views: 47,101

October 05, 2025, 02:18:04 PM
by AlexTheCat123

And so the Lisa adventure begins

Started by blusnowkitty

Pages1 2

Replies: 21
Views: 146,025

June 21, 2021, 06:27:53 PM
by stepleton

A few bad blocks on a Widget

Started by ried

Replies: 1
Views: 39,486

September 21, 2025, 04:53:19 AM
by stepleton

Advice for removing the connector on the back of the CRT without breaking it.

Started by rayarachelian

Replies: 5
Views: 66,001

May 26, 2020, 12:00:46 PM
by compu_85

400k floppy problems. Rom issue?

Started by Steve100

Replies: 2
Views: 38,810

October 09, 2024, 05:15:49 PM
by Steve100