Lisa Troubleshooting and Repair

Mac TCP on OS 7.1 not working

Started by bmwcyclist

Replies: 5
Views: 80,919

September 30, 2025, 12:35:13 PM
by bmwcyclist

Twiggy froggy foam replacement

Started by ried

Replies: 5
Views: 11,103

January 14, 2026, 03:59:01 AM
by stepleton

Sun disk controller schematic

Started by Al Kossow

Replies: 5
Views: 59,650

April 30, 2023, 08:35:03 PM
by sigma7

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

Started by rayarachelian

Replies: 5
Views: 79,829

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

DataPower 1.8A PSUs: SG3524 regulator IC failing

Started by stepleton

Replies: 5
Views: 55,878

November 02, 2023, 05:53:38 PM
by nekonoko

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

Started by bmwcyclist

Replies: 5
Views: 67,846

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

Lisa cursor blinks rapidly, each keystroke prints multipe symbols on screen, why

Started by TorZidan

Replies: 5
Views: 64,204

October 27, 2024, 12:28:48 AM
by sigma7

Any tips for lubricating a Lisa keyboard?

Started by Huxley

Replies: 4
Views: 14,192

February 12, 2026, 02:24:03 PM
by stepleton

Profile sticking at Track 0

Started by blusnowkitty

Replies: 4
Views: 68,226

October 20, 2021, 05:39:55 PM
by compu_85

Misc Lisa peripherals repairs

Started by pintoguy

Replies: 4
Views: 58,287

July 14, 2022, 05:31:54 PM
by pintoguy

No startup - Lisa Power Supply Unit?

Started by Ona Beach

Replies: 4
Views: 55,818

April 24, 2024, 10:43:24 PM
by AlexTheCat123

Video Board

Started by AlexTheCat123

Replies: 3
Views: 46,719

January 31, 2025, 09:25:37 PM
by AlexTheCat123

Video checkerboard pattern

Started by nickpunt

Replies: 3
Views: 57,923

April 02, 2025, 03:09:08 PM
by sigma7

Keyboard totally not responding on Lisa 2/10

Started by MyTechAttic

Replies: 3
Views: 49,855

March 23, 2023, 09:14:45 PM
by MyTechAttic

I/O board with DELIBERATELY cut tracks!!!

Started by Exteban

Replies: 3
Views: 51,158

January 18, 2024, 04:47:22 PM
by sigma7

2MB memory boards missing a trace

Started by stepleton

Replies: 3
Views: 51,405

October 29, 2023, 05:33:19 AM
by patrick

Troubleshooting Bus Errors

Started by sigma7

Replies: 3
Views: 62,153

May 14, 2022, 05:21:38 PM
by sigma7

Twiggy drive head pressure

Started by stepleton

Replies: 3
Views: 53,905

February 19, 2025, 11:14:51 PM
by ried

Lisa Tripping GFCI

Started by jamesdenton

Replies: 3
Views: 133,890

August 31, 2025, 02:05:29 PM
by jamesdenton

File System Issues.

Started by bmwcyclist

Replies: 3
Views: 62,260

May 23, 2025, 02:49:36 PM
by bmwcyclist