The BackBit Chip Tester ups your game with vintage computer diagnosis and repair. Tired of playing a guessing game with swapping chips? Don’t want to risk putting bad chips in a good machine (and vice versa)? Want to do as little desoldering as possible? Then the BackBit Chip Tester is your solution.
See complete documenation here.
- Designed for use with the Commodore 64, but capable of being expanded to other hardware with firmware upgrades;
- Diagnoses chips in-circuit to help you decide which chips to desolder;
- Diagnoses loose chips to save you from purchasing unnecessary replacements;
- Pays for itself when it helps you rescue a machine you’ve given up on;
- Deduces problems with integrated circuits, making it much easier to narrow down wiring problems and corrosion;
- Supports testing 5V logic of chips in the Commodore 64 (and some related machines);
- Capable of “ripping” ROM chips to Micro SD card (card not included);
- Sturdy “sandwiched” PCB case with 3D-printed buttons and standoffs;
- The same quality of technical support you have come to expect from the BackBit cartridge.
About in-circuit testing:
- Test clips are not included (you must purchase 3M or similar 0.3″ and 0.6″ width DIP IC clips with minimum pin count for the chips you want to test);
- If you use a larger clip that overhangs a chip, the tester can be configured to test at different vertical offsets;
- For easy writing, ONE CLIP ADAPTER IS INCLUDED to attach the clip to the tester’s socket (can purchase additional clip adapters here);
- WARNING: DO NOT USE for in-circuit testing while machine is PLUGGED IN, as this can damage the tester permanently.
- One clip adapter to make it easy to wire in an IC test clip (can purchase additional clip adapters);
- 6′ micro USB cable for power (must provide your own USB power).
Optional accessories available for purchase:
- Additional clip adapters for wiring additional IC test clips;
- CartRip™ adapter to rip ROM images directly from a Commodore 64/128 cartridge.
Recommended accessories to test in-circuit (not sold by BackBit):
IC Test Clips (this is the minimum set to be able to test nearly all chips in the C64 easily)
*make sure you do not get “nail head” clips as those don’t attach to jumper wire
*if you get a 24 or 28 pin clip, make sure to get the wide one, i.e. 0.6″ width
*these are much cheaper used or new old-stock on ebay
* use male/female extension wire; any square pin wires with 2.54mm spacing should work;
* best to get configurable-sized headers like these, as single pin jumpers tend to get jammed with so many in a row; you just use a few of these for each side of the junction, i.e. 2x 10 pins for the 20 pin clip, 4x 6 pins for 24 pin clip, 4x 10 pins for 40 pin clip, or other combinations will work:
https://www.adafruit.com/product/3146 or https://www.adafruit.com/product/3145