Is there any method to check the leakage LEDs in a LED matrix?
I’m building my own matrix by using unbranded cheap Chinese OVAL LEDs. They have no datasheet/specs.
*Some LEDs lights up but take lots of current (like a short circuit).
*Some LEDs current passes when they are reverse biased.
Due to the above scenarios, when my matrix working I see inactive LEDs lights up slightly. I tested individual LEDs by using an analog multi-meter(X1K range).
*When I see the pointer moving both sides, then the particular LED has a problem. I replace them.
*Some LEDs I see the pointer moves more than others, means it takes more current than other LEDs. I replace them as well.
Now the problem vanished & I get a nice display.
I have 512 LEDs in each matrix block, Is there any easy method to check those leakage LEDs in a matrix?