Commodore 64 repair logs for the C64C motherboards

Commodore 64C

This sub-section holds the repair jobs I have done on Commodore 64C motherboards:

Assy 250469 Rev. 3 #1 – black screen (MPU)
Assy 250469 Rev. 3 #2 – black screen (power switch, KERNAL/BASIC ROM, RAM)
Assy 250469 Rev. 4 #1 – startup screen with scrambled characters (CHAR ROM)
Assy 250469 Rev. 4 #2 – black screen (power switch, RAM, MPU, CIA)
Assy 250469 Rev. 4 #3 – black screen (RAM, Kernal/Basic, CHAR, CIA, power switch, 7406, 7408)
Assy 250469 Rev. 4 #4 – no Serial Port access (CIA x 2, 7406, diodes)
Assy 250469 Rev. A #1 – blank startup screen with blinking cursor (SID)
Assy 250469 Rev. A #2 – row on keyboard not functioning (broken trace on PCB)

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