If you own an Anbernic RG353VS handheld gaming system..... there are times when the system will not power up or boot.
One thing you can try is this.. very simple (happens sometimes when you switch sd cards for TF1)
1. Press the reset button (you don't have to hold it. Just press it for a second).
2. Now press and hold the power button until the light comes on.
I know.. it seems obvious.. but I didn't know something as simple as that would fix the problem.
