LCD displays full white light instead of the message when powered
Hi @yasmine1205
The information provided generates the possible help.
Use a red paint and paint it.
The light will turn red.
RV mineirim
@yasmine1205, your topic has been moved to a more suitable location on the forum. Installation and Troubleshooting is not for problems with (nor for advise on) your project 
See About the Installation & Troubleshooting category.
Please provide a wiring diagram and your code. When posting code, please don't forget to use so-called code tags so the forum software does not mangle it, it's easier to read and easy for others to copy; use the </> as shown below.
We cannot help you unless you provide adequate information.
What exact LCD. There are many styles and sizes and different interfaces.
What Arduino board?
Post your test code.
Post a diagram showing how your wiring should be.
Post photos showing how your wiring actually is.
Beautifully put! 
I guess adjusting the potentiometer might help.....But code and schematic are important.
As we found in this concurrent post. 
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