It's not a problem, it's because the phone is pulling to much Wattage out of the charger and so it cuts on and off, because it can't charge both at the same time. If you plug in another device with lower power consumption, like a USB alarm clock or something, this won't happen.
Wonder if it's anything to do with the way the phone charges. I have an Xperia and so does someone else in these comments. Same issue. As someone below said - it must be the phone drawing too much current or something. It happens to mine even if I don't have the surface plugged in at the same time.
I am like 4 years late for the video. Maybe I can help future people looking for a solution. My surface book 2 charger just had this issue. I got the charger to work again by using an easer to clean the pins on the charger.
Hi. My Surface PRO charger does not work sometimes and I could not charge my Surface PRO . After Some plug in and Plug out AC input or charger port on the Surface PRO, it take charge and it happen when Surface PRO on or off. How can I solve this ? 🌹🌹