For repairs to your equipment or additional info: email: rcarlsen at tds dot net
First on this list: how to pack equipment properly for shipping, and what can happen if you don't!
COMMODORE
POWER SUPPLIES, new replacements for your old or missing PS.
THE
COMPUTER SAVER, a protection device for the C64 using the "brick" power
supply.
CBM-II
series computers: C128-40, B128-80 (aka 700), B256-80, & the P500.
C16
computer: schematics
C116
computer: schematics
C64 computer:
repair articles, schematics, service manual, Computer Saver for your C64,
adding a reset
switch (warm and cold), using an EPROM to replace the PLA, adding heat
sinks to IC's, and more.
C65 computer:
motherboard photo only
SX64 portable
computer: repair articles, schematics, adding an "invisible" reset switch,
disk drive swap,
photos, keyboard repairs, how to replace missing handle caps, the SRQ line
mod, etc.
PET64 computer:
photos, ROM binaries, & misc info.
Plus/4 computer:
a beginners tutorial, service and troubleshooting mauals, power connector
info., computer Saver
C128 computer:
repair articles, schematics, VRAM upgrade, PS repairs, etc.
C128DCR
USA (metal case) computer: repair articles, schematics, adding a fan, WP
bypass, drive # change, etc.
VIC20
computer: repair articles, schematics, etc.
1541 disk
drive: repair articles and schematics, drive reset mod, etc.
1551 disk
drive: schematics only
1571 disk
drive: repair articles and schematics, PS info, reset mod, transit card,
etc.
1581 disk
drive: schematics, PS, reset mod, diagnostic procedures and bug fixes.
Enhancer
2000 disk drive: schematics, photos and service manual
MSD SD-1 and
SD-2 disk drives: repair information, schematics, Ops manual, CLD MassDupe,
etc.
FSD-1 disk
drive: photos and DOS ROM binary file
FSD-2 disk
drive (aka Oceanic OC-118 & Excelerator+Plus): photos and DOS ROM binary
file
INDUS-GT
disk drive: schematics, photos & ROM binary files
SFD-1001
disk drive: schematics, DOS ROM binaries, etc.
BLUE
CHIP and AMTECH disk drives: 1541 and 1571 clones, external transformer
power pack
The
datassette (C2N and 1531): some common problems and their solutions
17xx series RAM EXPANSION units: schematics and board layout.
Commodore monitor schematics and hardware repair information.
The uIEC/SD module from Retro Innovations (Jim Brain)... some early experiments
MISCELLANEOUS REPAIR ARTICLES, "HACKS" AND OTHER INFO.
Pinouts
of various Commodore connectors
A
replacement power switch for your Commodore monitor
A
replacement power switch for the C64 and C128
Testing and
evaluating the SID (sound) chip in your computer, sound clips, a small
BASIC test program, etc.
How
to install a switch to change your disk drive from device 8 to 9
Keyboard
repair
Desoldering
IC's safely
Power
supply testing and repair
Testing
control ports with a small BASIC program
Adding
a fan to cool your computer or disk drive
How
to install a safe and simple write-protect bypass circuit in your disk
drive
How
to repair a cassette or datassette tape
Diagnostic
cartridges: what Commodore factory techs used to repair computers
Adapters
to replace Commodore ROMs with newer EPROMs
Jason-Ranheim
EPROM burner and Promos 2.0 software
The CMD
RAMLink, some generic information
Pict-o-guide,
screen shots of common faults.
Use a C128
PS on your C64 by adding (pigtail) a C64 power connector to the supply.
Misc. hardware
and software: diagnostic and other cartridges, zip files, printers, Ketek
enclosure,
VIC1020, VIC20 switch, CSI switch,etc.