Key benefits Fast fault identification: quickly finds open circuits and short circuits between a video card's goldenfinger PCI/AGP/PCI‑E connector and the motherboard without probing each pin with a multimeter. Accurate diagnostics: detects opencircuit faults and CPU shortcircuit failures with 100% accuracy, helping you avoid timeconsuming guesswork. Saves time: a dedicated tester speeds up troubleshooting so you can move from inspection to or replacement more efficiently. What this tool does Tests the data bus connections between the video card chip/CPU and the motherboard PCI/AGP/PCI‑E interface. Detects open circuits and shorts of the bus lines to ground. Provides a standalone testing step after visual and basic electrical checks. Compatibility and function Designed for AGP and PCI‑E video cards and for checking the PCI bus interface between the card golden finger and the motherboard. Specifically targets opencircuit conditions and CPU shortcircuit failures on the video card data bus. Performance and reliability Rapid, dedicated diagnostics tailored to image/video card workflows. Built for consistent detection of open and short faults; stated detection accuracy: 100% for open circuits and CPU shortcircuit failures. How it fits into a workflow 1. Visual inspection: check the video card for burnt marks, broken PCB traces, or obvious physical damage. 2. Power verification: confirm voltages on power rails are within expected ranges. 3. Use the tester: if appearance and voltages are normal, use this tester to measure whether the data lines between the GPU/CPU and the motherboard PCI interface are open or shorted. Typical use scenarios bench for computer technicians: rapidly identify whether a nondisplaying or unstable video card has open data lines or a CPU short, reducing diagnostic time. Preinstall verification: confirm a used or repaired AGP/PCI‑E video card has no open or short faults before installing it into a system. Field diagnostics: determine whether an intermittent or blurry display issue is caused by databus connectivity faults versus power or mechanical damage. Why professionals use it Eliminates repetitive multimeter pinbypin checks of the PCI/AGP/PCI‑E interface. Provides a clear next step when visual inspection and voltage checks are inconclusive. Integrates into standard GPU/video card troubleshooting procedures without extra equipment setup. Included functionality (as per original specification) Opencircuit detection between video card golden finger and motherboard. Shortcircuit detection of data bus lines to ground. Detection of CPUrelated shortcircuit failures on the video card. Note on use Use after confirming visible condition and power rails; the tester is intended to diagnose databus open/short faults as described above.