jhd 162a (lcd) Not working well

Hey..i am new n arduino world..so i want some help.
i connect my LCD display(JHD 162a) as per given in Wiring a Character LCD | Character LCDs | Adafruit Learning System and uploaded hello world program..but all i get is like in the attached image.I used 20k pot instead of 10k..Will that be a problem?
Thanks in advance!

IMG_0314[1].JPG

nevil010:
Hey..i am new n arduino world..so i want some help.
i connect my LCD display(JHD 162a) as per given in Wiring a Character LCD | Character LCDs | Adafruit Learning System and uploaded hello world program..but all i get is like in the attached image.I used 20k pot instead of 10k..Will that be a problem?
Thanks in advance!

The 20 K pot is not the problem, something else is wrong. We will need to see a photograph of your connections and a copy of your code.

Also, change the title of this thread from 'Need help!' to something that reflects what you need help with.

Don

wiring is really messy.
Code:
LiquidCrystal lcd(7, 8, 9, 10, 11, 12);

void setup() {
// set up the LCD’s number of columns and rows:
lcd.begin(16, 2);
// Print a message to the LCD.
lcd.print(“hello, world!”);
}

void loop() {
// Turn off the display:
lcd.noDisplay();
delay(500);
// Turn on the display:
lcd.display();
delay(500);
}

I would start by checking for solder bridges between the pins on your LCD. It looks like you have used a lot more solder than you need.

Don