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The LC575 was released in early 1994 as a respectablyspec'd and affordable allinone Macintosh for home and education markets. The form factor and design didn't change from its 550 and 520 predecessors Apple stuck to a formula that worked, simply increasing the speed and capability.

After the LC575, Apple changed the internal harness. This made the 575's logic board a soughtafter upgrade option for compatible Mac released in '9394, mainly the woefully underpowered Color Classic. Many people have robbed 575's of their boards, leaving empty shells, and the secondary market for working boards is out of reach for many regular collectors now.

I came across this sadly neglected and abused example from a longclosed school. It has been pushed around a moldy garage for many years, and likely sat under a water leak or outside... but hopefully we can save it!

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CREDITS:

Thanks again to Nickposting & Techknight on the Retro Electronics Repair Discord for their support and advice

Make sure you subscribe to ‪@BigBadBench‬ for his fun Saturday streams (   / @bigbadbench  ) and ‪@THEtechknight‬ (   / @thetechknight  ) for his wealth of technical expertise they are the team that can get this board over the finish line!

Thank you to PCBWay for sponsoring this video. You can check them out at https://www.pcbway.com/

CHAPTERS:
00:00 Intro
01:00 Awful Conditions
01:30 Cleanup & Inspection
02:30 Logic Board Cleanup
03:52 Sponsor
04:30 Logic Board Cleanup Continued
05:44 Recapping & Reflowing the Board
07:23 First Test Boot
07:50 Logic Board Troubleshooting
08:39 Asking Friends For Help
09:20 Chips Need Swapping
11:10 Road Trip!
12:58 Getting Overwhelmed
16:29 Test Boot 47
16:53 Chassis Teardown
18:37 Rust Repair 1
20:20 Rust Repair 2
20:42 Rust Repair 3
21:57 Accepting My Limits
23:43 What's Next


#apple #LC575 #575 #68k #Macintosh #retrocomputing #nostalgia #SchoolComputer #educationcomputer #vintagecomputer #90s #PCBWay