Performa 410

Also known as the LC II – A Mac for the masses.

The LC II was a modified version of the earlier LC. Running a 68030 32-bit CPU on a 16-bit data bus and hard limited to 10 MB RAM maximum, with virtual memory support, it’s slower than the older Mac IIx, despite having the same processor.

Narrative »

A drop-off from a client, likely from a local school. Nothing particularly special about this machine.

Vital Stats »

  • Model Number: M1700
  • Serial Number: F2338HV622L

Acquisition Data »

  • Acquisition Date: Pre-2005
  • Acquisition Method: Donation
  • Acquired From: Client Dropoff

Physical Condition »

  • Vitals: System Software 7.1P3, 8MB RAM, 80MB SCSI HDD with TimesTwo compression installed.
  • Condition: Good, some yellowing.
    • 5 December 2015: Completed capacitor repair and floppy reconditioning. Machine works properly.
    • 12 October 2015: system seems to work fine. Noticed electrolytic capacitors leaking on board. Machine out of service until capacitors can be replaced. Capacitor replacement guide:  https://wiki.68kmla.org/Capacitor_Replacement
    • 30 November 2014: Cleaned floppy, replaced PRAM Battery. SCSI HDD took about an hour to start responding. Ran Disk First Aid – passed.
  • Other: Original ADB cable is missing. Power cable not present. None of the associated packaging is present. Manuals are not present.

Associated Accessories »

  • Apple Keyboard [M0116] {1194795}
  • Apple Desktop Bus Mouse [G5431] {LT050F9BC22}
  • Original keyboard and mouse present None

Photographs »

Repair Process
Macintosh LC II/Performa 410 logic board before capacitor removal.
Macintosh LC II/Performa 410 logic board before capacitor removal.
Macintosh LC II/Performa 410 closeup of leaking electrolyte before capacitor removal.
Macintosh LC II/Performa 410 closeup of leaking electrolyte before capacitor removal.
Macintosh LC II/Performa 410 closeup of leaking electrolyte after capacitor removal.
Macintosh LC II/Performa 410 closeup of leaking electrolyte after capacitor removal.
Macintosh LC II/Performa 410 logic board after capacitor removal.
Macintosh LC II/Performa 410 logic board after capacitor removal.

At this point, the board was cleaned extensively using cotton swabs and isopropanol.

Macintosh LC II/Performa 410 logic board on lower rack of a common dishwasher ready for a cleaning.
Macintosh LC II/Performa 410 logic board ready for a cleaning. Three 9-minute cycles without detergent on “rinse only” did the trick.
Macintosh LC II/Performa 410 logic board after a trip through the dishwasher.
Macintosh LC II/Performa 410 logic board after a trip through the dishwasher.
Closeup of capacitor 10 repair on Performa 410 motherboard.
Closeup of capacitor 10 repair: used a bit of solder wick as a bus since the capacitor was so close to the audio jack.
Makeshift clamp used to hold capacitors for pre-tinning.
Makeshift clamp used to hold capacitors for pre-tinning.
Super closeup of the capacitors with ruler for scale.
Super closeup of the capacitors.

At this point, I lost one of the capacitors somewhere in the carpet, and discovered I ordered the wrong voltage of another. Ordered new parts and waited a week.

Completed, repaired Performa 410 motherboard.
Completed, repaired motherboard.
Picture of Macintosh Performa 410 operating properly after capacitor repair.
Now, that’s a happy Mac.