What should I do if the advertising display is black, has no power indication, and shows no response when plugged in?
Don’t rush to request repairs—often the issue is minor. Follow these steps in order to check, and you’ll likely resolve it yourself.
Start with the simplest checks:
Check the power supply
Test the outlet with another device (e.g., phone charger) to confirm it works. Ensure the advertising display’s power plug is fully inserted.
Check the power switch
Look for a physical power switch on the side or back of the display. Switch it to ON and try again. Many issues stem from missing this step.
Check the power strip and electrical panel:
If using a power strip, ensure its switch is on, or try a different strip.
Plug the display directly into a wall outlet to rule out power strip issues.
Check the electrical panel for tripped circuit breakers.
If there’s still no response:
Try a different power cord
Many displays use standard “IEC” power cords (like desktop computers). Try swapping with a known-working cord.
Check internal connections
⚠️ Ensure the power is disconnected before proceeding!
Open the back panel and check if key internal cables (e.g., between the power board, mainboard, and screen) are loose or detached.
If the issue persists after all checks, it may be a hardware failure.
Common causes include:
Faulty power board (most common) – provides power to the device.
Damaged mainboard – less frequent but possible.
Contact our support with the following information prepared:
Model and serial number (on the label at the back).
Purchase date (to confirm warranty status).
Detailed description (e.g., “No light or response after plugging in. Tried different cords and outlets.”).
Steps you’ve already attempted, to avoid redundant guidance.
Final reminders:
⚠️ Safety first: Avoid opening the device if you’re unsure, especially near power components, to prevent electric shock or further damage.
✅ Under warranty? Contact us directly—unauthorized disassembly may void the warranty.
We hope these steps help! If the issue remains, our technical team is here to assist.
"This article is part of the 'Advertising Machine FAQ' series. If you are experiencing other issues, such as unresponsive touch screens, black screens, etc., feel free to visit our [Advertising Machine Common Problems and Solutions (FAQ) Center | Ultimate Troubleshooting and Maintenance Guide] for quick answers."