In the green channel only, the LED directly below (row y + 1) the one being lit is always on faintly. In a dark room, you can see this effect more. You should be able to replicate this by loading a slightly modified firmware that fills the front buffer with nothing but one dot at (0,0) with RGB = 0F0. The LED at (0,1) should be glowing faintly.Is this a hardware issue? Or ... does it happen in all channels but our eyes are just more sensitive to the green in particular?I modified the firmware to do nothing but light first two columns (to reduce the PWM-related issues to minimum) and I'm still seeing this faint glow.Ideas? Suggestions?

Please help.

I didn't find the right solution from the Internet.

Seeedstudio Forum ? View topic - Hardware issue?
Smart Gadget Video Example