Audrey terminal dim screen. Diagnostic report focusing on external causes, voltage checks, and software settings. No internal modifications.
Measure with a multimeter, confirm the adapter is rated for the device.
Check purchase date and warranty terms.
Power surges can damage the backlight circuitry.
LCD backlight intensity is typically controlled by pulse-width modulation (PWM) of the voltage supplied to the LED backlight array. A malfunctioning display driver IC or a voltage drop along the power supply line can cause reduced backlight intensity. Software settings can also affect the PWM duty cycle, thus impacting brightness. Electrostatic discharge (ESD) can corrupt firmware settings.
Audrey terminal screen exhibits reduced brightness despite brightness setting being at maximum.
Avoid any internal modifications. The Audrey terminal is a secure payment device and has tamper-evident features. Opening the casing will void the warranty and may render the device unusable. Handle with care to avoid electrostatic discharge, especially in dry environments. Ensure power cable is not a tripping hazard.
Regularly clean the terminal screen with a lint-free cloth and approved screen cleaner.,Ensure the power adapter is placed in a well-ventilated area to prevent overheating.,Avoid placing heavy objects on the display cable to prevent damage.,Implement ESD prevention measures, especially during dry winter months (e.g., anti-static mats, grounding straps).,Apply cable strain relief to power and display cables.
Many card terminals have a diagnostic menu accessible via a specific key combination during boot. Consult the service manual for the Audrey model to identify the correct key sequence. This menu may provide voltage readings or backlight test patterns to aid in diagnosis.