TechTopics
Issue 2, 1985 Tid-Bits
C-64 Diagnostic
Diagnostic Disk Manual V2.0
Vic-20 Diagnostic
C-64 Service manual
TechTopics
Issue 2, 1985 Tid-Bits
C-64 Diagnostic
Diagnostic Disk Manual V2.0
Vic-20 Diagnostic
C-64 Service manual
TechTopics
Issue 1, 1985 Monitor 1
Troubleshooting the 1702 monitor.
Collated into chart form. The 1702 is the most common monitor in the field at this time.
TechTopics
Issue 7, 1984 Computer 4
Model: C16, Plus 4
LINE DEFINITIONS
TechTopics
Issue 6, 1984: Computer 3
Model: PLUS 4
NOTE: Visual inspection is critical in this unit!
The upright position of many of the components used on the board can create problems.
It is possible for them to be shorted to the shield or to each other.
Make sure they are evenly spaced and do no contact the shield.
Areas of particularly vulnerable to this problem are:
Bottom right Corner – caps
BottomĀ center – J1-J6
Top Left – Ferrite Beads
Center – Twisted Caps
TechTopics
Issue 5, 1984 Model C16
Visual inspection is critical in this unit!
The upright position of many of the components used on the board can create problems.
It is possible for them to be shorted to the shield or to each other.
Make sure they are evenly spaced and do no contact the shield.
Techtopics
Issue 4, 1984 Computer 1
Model C-64
UPDATE: To Date there are 3 version of the 64 PCB assemblies in use