Troubleshooting Verifone Audrey display issues. Diagnose half-screen failures, potential causes, and safe solutions for retail environments.
Record any instances of physical impact or damage.
Gather information from Telus support.
Check for widespread problems.
The LCD display is controlled by an internal graphics processing unit (GPU) which outputs a signal over a low-voltage differential signaling (LVDS) or similar interface. A partial display failure suggests a disruption in signal transmission, a voltage issue affecting part of the display panel, or a software-level issue altering the display's render region. ESD (Electrostatic Discharge) can also corrupt the display driver's memory. Update processes can sometimes introduce software bugs impacting display output. Cable strain on the display connector may introduce signal degradation. Check for proper voltage levels using external diagnostic tools without opening the device.
The Verifone Audrey terminal displays only half of the screen's intended output. The issue began following a Telus maintenance window.
Do not attempt to open the terminal casing. This will void the warranty and potentially damage the device due to PCI-PTS anti-tamper mechanisms. Ensure the terminal is disconnected from the power source during inspection and cleaning. Avoid using liquids directly on the terminal. Handle cables with care to prevent damage or strain.
Implement cable strain relief measures to prevent damage to the display cable.,Regularly clean the terminal screen with an anti-static cloth.,Ensure the terminal is placed on a stable surface to prevent accidental drops or impacts.,Maintain adequate humidity levels, especially during dry winter months, to minimize ESD events.,Adhere to Verifone's recommended maintenance schedule and firmware update procedures.
Try pressing and holding the 'CLR' and '.' (decimal point) keys simultaneously while powering on the device. This may initiate a diagnostic mode or clear corrupted display settings in some Verifone models. Perform this ONLY if documented in the Verifone Audrey manual, otherwise proceed with caution as undocumented key combinations can cause further issues. Consider using a USB ESD wrist strap when handling the device, especially in dry environments.