This 4-in-1 Dead Test & Diagnostic Cartridge with Test Harness is the ultimate tool for troubleshooting Commodore 64 systems. Each board is fully assembled and tested on an actual Commodore 64, ensuring reliability. 

The package includes:

• Diagnostic Test (586220) – For comprehensive system checks

• Dead Test (781220) – Ideal for diagnosing non-booting machines

• DesTestMax – Advanced diagnostic tool designed specifically for troubleshooting issues

• 1541 Floppy Drive Diagnostic – Specialized diagnostic test for the 1541 floppy drive

Full Test Harness – Covers all ports

• Keyboard (Internal) This must be connected for the test to run correctly.

• Expansion Port 

• Cassette Port 

• Serial Port 

• Userport

• 2 Control Ports

Compatible with all Commodore 64 models, this kit supports both NTSC & PAL computers. The included keeper ensures everything stays organized when not in use.

About J&G Supply Co:

I do this to help keep these old machines running.  I hope to deliver quality products to as many people as need them. I stand behind my products and will do what I can to ensure value and a pleasurable experience.  Thank you to my many customers, I strive to continue to earn the trust you have put in me.

📦 Ready for immediate, free shipment from the USA!