Removing IC's from any retro computer can be tricky. But this Commodore C64 is hiding a nasty trick.

It also proved to be a very tricky repair with Dead Test displaying only a pink screen and no other clues. Using the Oscilloscope provided some hints which eventually led me to the solution. Or possibly blind luck did.

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00:00 Introduction 01:05 Pink Screen 02:15 Bad Socket 02:48 Test Vic2 03:17 First Theory 04:03 CPU? 07:31 Remove CPU 09:30 Hooked Legs! 12:59 Test CPU 14:30 New CPU Socket 15:10 Remove PLA 17:20 Test PLA 18:19 Replace Bad CIA Socket 20:25 Taking Stock 22:45 Removing Ram 24:10 Second CIA 25:25 Microscope View of Legs 27:32 Test CIA 27:47 Colour Ram 28:10 UPDATE 29:14 Remove Character Rom 31:45 Test Rom 33:24 Test SID 33:37 Last Checks 34:14 Test Data Lines 34:35 Test Harness 35:21 Goodbye!

#c64 #commodore64 #computerrepair