Why does the motorcycle screen go out when starting?
2 Answers
If the display screen goes out immediately when starting, this situation may be caused by a weak battery or leakage in the electric starting circuit. The following details the possible causes: Weak battery: It is recommended to check whether the battery is not holding a charge, whether there is a discharge fault in the vehicle's circuit and electrical components, and whether the vehicle's power generation and charging are normal. These are the main reasons for a weak battery. Additionally, check whether the battery terminals have poor contact, whether the battery's ground wire has poor grounding, and whether there is any loose connection in the fuses. Leakage in the electric starting circuit: If the motorcycle can be started by kick-starting, the dashboard brightness is normal, and the indicator lights are functioning properly, it can be determined that there is leakage in the electric starting circuit.
I've been riding motorcycles for many years and have encountered situations where the screen goes out during ignition, usually due to battery issues. Starting a motorcycle requires a large current surge, and if the battery is aged or undercharged, a sudden voltage drop may cause the instrument panel to lose power. For example, in cold weather or after prolonged storage, battery performance declines noticeably. I recommend using a multimeter to check the battery voltage, which should normally be above 12.6V; if it's below 12V, it's time to recharge or replace the battery. Check for rust or looseness at the battery terminals, clean them, and tighten them with a wrench. Avoid excessive use of electrical devices in daily use, such as keeping the headlights on for too long before starting, as maintaining the battery can reduce such failures. If the battery is fine, the issue might be unstable generator output, so it's advisable to regularly inspect the charging system. From the perspective of the electrical system, addressing this problem is relatively simple and effective.
