C64:
chips vs symptoms and diagnostics.
C64
"blank screen" symptom: what it means and how to fix it.
C64C:
chips vs symptoms and diagnostics.
C64
& C128 "joystick" control ports: troubleshooting the ports, joystick,
mouse, paddles, etc.
C64/128
memory problems: "out of memory in 0" error message and others.
PLA
replacement using an EPROM and adaptor
SX64:
Disassembly, diagnosis, and repair.
SX64:
how to add a computer reset switch without drilling any holes in the case.
SX64
disk drive change: how to swap the drive with a stand-alone 1541 mechanism.
The Commodore
Plus/4 computer: a beginners tutorial.
That
crazy square connector... how to change the power socket on the Plus/4
so you can use a C64 supply.
C128:
chips vs symptoms and diagnostics.
How
to upgrade the C128 from 16K to 64K of VRAM.
C128:
80 column picture "bending" and distortion on Commodore monitors.
1541
disk drive: chips vs symptoms, diagnostics.
1541
disk drive: diagnostic procedures.
1571
disk drive: common problems and solutions.
1581:
Bug fixes and diagnostic procedures.
MSD-SD2:
how to add a device # select switch.
MSD-SD2: link
to operators manual, schematic, and service info.
Adding
a reset switch to your Commodore disk drive.
A simple
modification to safely defeat write protection without disabling disk change
updates.
How
to add a device change switch (8 to 9, 10, or 11) to your Commodore disk
drive.
The
disk drive "transit" card: what it's for and how to make your own. .jpg
image
Adding
a reset switch to your Commodore computer.
How
to install a fan in your C64, SX64 or 1541
How
to add a fan to your Commodore C128DCR (Metal Case USA model)
Color
monitor adjustments: how to do convergence, color purity, and greyscale.
How
to replace the power switch in your Commodore monitor.
How
to desolder and replace chips in your Commodore equipment.
How
to repair a broken audio/data tape cassette.
How
to clean and repair your Commodore keyboards.
Connector
pinouts for Commodore equipment.
How
to make and install heat sinks for IC chips in Commodore equipment.
Repairing
a "wall wart" power supply.
How
to safely test and evaluate the C64 "black brick" power supply.
Schematic
for a repairable C64 power supply (.jpg format).
The
computer saver: an add-on to protect your computer from the "black brick"
supply.
