why my lcd1602 with i2c only display a character?

the code://YWROBOT
//Compatible with the Arduino IDE 1.0
//Library version:1.1
#include <Wire.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27,16,2); // set the LCD address to 0x27 for a 16 chars and 2 line display

void setup()
{
lcd.init(); // initialize the lcd

// Print a message to the LCD.
lcd.backlight();
lcd.setCursor(0,1);
lcd.print(“Helloworld!”);
}

void loop()
{
}

my fault or the hardware is already unfunction?

the code://YWROBOT
//Compatible with the Arduino IDE 1.0
//Library version:1.1
#include <Wire.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27,16,2); // set the LCD address to 0x27 for a 16 chars and 2 line display

void setup()
{
lcd.init(); // initialize the lcd

// Print a message to the LCD.
lcd.backlight();
lcd.setCursor(0,1);
lcd.print(“Helloworld!”);
}

void loop()
{
}

my fault or the hardware is already unfunction?

My reply to this post mysteriously disappeared - along with the picture the OP posted!

Did you reply to the crosspost?

dannable: Did you reply to the crosspost?

That is indeed the case. I thought removing it without notification was a bit rude - to me, not the OP. Not even a draft survived. So I am not going to re-write it.

@qiyeleong - see http://forum.arduino.cc/index.php?topic=359482.0