The 64 Doctor by Trilogic provides comprehensive fault finding and diagnostic tests for the Commodore 64 computer.
 
64 Doctor complete with port testers, full manual & free comprehensive diagnostic & repair guide.
 
The 64 Doctor by Trilogic, the ultimate professional diagnostic cartridge for the Commodore 64. Whether you're a vintage computer enthusiast or a repair technician, this invaluable tool provides a comprehensive suite of testing and diagnostic tools to keep your Commodore 64 in top condition. The 64 Doctor helps identify and repair hardware and software issues, making it the perfect choice for diagnosing and troubleshooting any problems with your beloved Commodore 64. With its easy-to-use interface and powerful diagnostic capabilities, the 64 Doctor is a must-have for anyone looking to maintain and repair their Commodore 64. Invest in the 64 Doctor and ensure your Commodore 64 performs at its best for years to come.
 
Here is a list of what's tested:
  - Video chips and video banks
  - CIA chips
  - CIA NMI & CIA IRQ interrupts
  - 6581 Sound Chip
  - User Port
  - Keyboard
  - Serial port
  - Expansion port
  - Joystick ports and Joysticks
  - Kernal ROM
  - BASIC ROM
  - Cassette

Simply plug in the testers and switch your C64 on for the test that details the status of each of its components.
 
Includes comprehensive repair guide - Explains step by step how to locate faults and identify chips, How to dismantle the keyboard, Includes Commodore part number guide, Full of tips and hints - many only known to the trade, How to desolder chips the professional way - Written by professionals with a vast knowledge of the 64 faults & repairs.
 
Includes manual, cartridge, user port and serial port testers.
PAL and NTSC compatible.