What Voltage LED should i get for the socket?

Question

http://img529.imageshack.us/img529/8378/0718081703li1.jpg

Answer 1

It doesn't matter.  The circuit was obviously designed for a standard LED so choose a color and find a size that fits and solder it in.  No problema!

Answer 2

Obviously, I can't tell, since no one can generate a schematic from a dark photo of a PC board.

But most LEDs are about the same, 2-3 volts, so get one and try it.  Except there seems to be a socket of some sort, so you have to find one that matches the socket, or just solder to the socket connections with a normal LED.

.

.

Answer 3

This circuit board looks like a computer board. It uses 1.6 volts LED,any color will do.