16x2 LCD Mystery [update]

anyway, how come you didn't mention DSCF5903.JPG and DSCF5917.JPG since i thought these were my best pictures sended

DSCF5903.JPG - The resolution is too low. I cannot tell where the black wire goes at the Arduino end or at the LCD end. I cannot read the resistor value.

DSCF5917.JPG - The black wire is not visible against the black table. The resistor value is obscured by the black wire. The Arduino terminals are not identifiable.

The devices were moved between the times that these two pictures were taken. Who knows what else changed?

edit; i used the voltage meter to messure the voltage on a led, but it just keeps showing 0.00 volt so its broken somehow (i did try to messure both current and voltage on the lcd but it show 0.00)

That means that there is no current flowing (assuming that the voltmeter is OK).

Did you try measuring the voltage coming out of the Arduino? If you measure 5 volts there then you know that the meter is good and something else is causing the problem. You could have blown out the LED backlight or you could have a poor connection to that backlight.

Don