Nematron IWS‑3005T‑012 is a compact 6 × 9 inch resistive touch screen workstation designed as an operator interface for industrial control systems. Common failures on this model include degraded touch response due to capacitor leakage in the touch controller, display flicker from failing CRT backlight drivers, and power supply voltage drops that trigger the built‑in diagnostic LED. Initial troubleshooting should verify the 115 VAC/120 V input with a multimeter, inspect the internal power regulator for overheating or blown fuses, and check the touch matrix signal integrity by measuring the I/O lines against the reference timing diagram. If the screen remains unresponsive, perform a quick visual inspection of the CRT tube for bulging or cracked glass before proceeding to replace the backlight driver module.[oss-gpt-20b]