The 3.5' LCD show only white screen,dim white and black after i upload the code to the arduino

So hi there!This is a major problem that most people encountered which mean there were many forum that have discussed this prob and i have tried every solutions i encountered but i still have the same problem.

My fellow friends,please do help me.Thanks in advance

this is the code

[code]

*/

#include <UTFT.h>
#include <URTouch.h>
#include <SoftwareSerial.h>
#include <DFRobotDFPlayerMini.h>
#include <DS3231.h>
#include <Arduino.h>


//==== Creating Objects
UTFT     myGLCD(SSD1289, 38, 39, 40, 41); //Parameters should be adjusted to your Display/Schield model
URTouch  myTouch( 6, 5, 4, 3, 2);
SoftwareSerial mp3Serial(11, 10);  // RX, TX
DFRobotDFPlayerMini myDFPlayer;  //
DS3231  rtc(SDA, SCL);
void printDetail(uint8_t type, int value);

//==== Defining Fonts
extern uint8_t SmallFont[];
extern uint8_t BigFont[];
extern uint8_t SevenSegNumFont[];

extern unsigned int MusicPlayerButton;
extern unsigned int AlarmButton;
extern unsigned int ButtonPlay;
extern unsigned int ButtonPause;
extern unsigned int PreviousButton;
extern unsigned int NextButton;
extern unsigned int VolumeDown;
extern unsigned int VolumeUp;

int x, y; // Variables for the coordinates where the display has been pressed
char currentPage, playStatus;
int iV = 15;
int trackNum = 1;
int b = 16;
int aHours = 0;
int aMinutes = 0;
boolean alarmNotSet = true;
String alarmString = "";
float currentTemperature, temperature;
static word totalTime, elapsedTime, playback, minutes, seconds, lastSeconds, minutesR, secondsR;
String currentClock, currentHours, currentMinutes, currentSeconds, currentDate;
String timeString, hoursString, minutesString, secondsString, hoursS, minutesS, secondsS, dateS;


void setup() {
  // Initiate display
  myGLCD.InitLCD();
  myGLCD.clrScr();
  myTouch.InitTouch();
  myTouch.setPrecision(PREC_MEDIUM);

  // Initialize the rtc object
  rtc.begin();

  // Music
  Serial.begin(9600);  // set serial monitor baud rate to Arduino IDE
  mp3Serial.begin(9600);  // BY8001 set to 9600 baud (required)
  myDFPlayer.begin(mp3Serial); // tell BY8001 library which serial port to use.
  delay(800);  // allow time for BY8001 cold boot; may adjust depending on flash storage size

  drawHomeScreen();  // Draws the Home Screen
  currentPage = '0'; // Indicates that we are at Home Screen
  playStatus = '0';

  myDFPlayer.volume(15);
  delay(100);
  currentTemperature = rtc.getTemp();
  currentDate = rtc.getDateStr();
  currentClock = rtc.getTimeStr();
  timeString = rtc.getTimeStr();
  currentHours = timeString.substring(0, 2);
  currentMinutes = timeString.substring(3, 5);
  currentSeconds = timeString.substring(6, 8);
}


void loop() {
  // Homes Screen
  if (currentPage == '0') {
    // Checks for change of the clock
    if ( currentClock != rtc.getTimeStr()) {
      timeString = rtc.getTimeStr();
      hoursS = timeString.substring(0, 2);
      minutesS = timeString.substring(3, 5);
      secondsS = timeString.substring(6, 8);

      myGLCD.setFont(SevenSegNumFont);
      myGLCD.setColor(0, 255, 0);

      myGLCD.print(secondsS, 224, 50);

      if ( currentMinutes != minutesS ) {
        myGLCD.print(minutesS, 128, 50);
        currentMinutes = minutesS;
      }
      if ( currentHours != hoursS ) {
        myGLCD.print(hoursS, 32, 50);
        currentHours = hoursS;
      }
      // Checks for change of the date
      dateS = rtc.getDateStr();
      delay(10);
      if ( currentDate != dateS) {
        myGLCD.setColor(255, 255, 255); // Sets color to white
        myGLCD.setFont(BigFont); // Sets font to big
        myGLCD.print(rtc.getDateStr(), 153, 7);
      }
      // Checks for change of the temperature
      temperature = rtc.getTemp();
      delay(10);
      if ( currentTemperature != temperature ) {
        myGLCD.setColor(255, 255, 255); // Sets color to white
        myGLCD.setFont(BigFont); // Sets font to big
        myGLCD.printNumI(temperature, 39, 7);
        currentTemperature = temperature;
      }
      delay(10);
      currentClock = rtc.getTimeStr();
    }
    // Checks whether the screen has been touched
    if (myTouch.dataAvailable()) {
      myTouch.read();
      x = myTouch.getX(); // X coordinate where the screen has been pressed
      y = myTouch.getY(); // Y coordinates where the screen has been pressed
      // If we press the Music Player Button
      if ((x >= 55) && (x <= 120) && (y >= 125) && (y <= 190)) {
        drawFrame(87, 157, 33);
        currentPage = '1';
        myGLCD.clrScr();
        delay(100);
        drawMusicPlayerScreen();
        delay(100);
      }
      // If we press the Alarm Button
      if ((x >= 195) && (x <= 260) && (y >= 125) && (y <= 190)) {
        drawFrame(227, 160, 29);
        currentPage = '2';
        myGLCD.clrScr();
      }
    }
  }

  // Music Player Screen
  if (currentPage == '1') {
    if (myTouch.dataAvailable()) {
      myTouch.read();
      x = myTouch.getX(); // X coordinate where the screen has been pressed
      y = myTouch.getY(); // Y coordinates where the screen has been pressed
      // If we press the Play Button
      if ((x >= 116) && (x <= 204) && (y >= 77) && (y <= 165)) {
        if (playStatus == '0') {
          drawFrame(159, 121, 42);
          drawPauseButton();
          myDFPlayer.playFolder(15, 4);  //play specific mp3 in SD:/15/004.mp3; Folder Name(1~99); File Name(1~255)
          delay(100);
          playStatus = '2';
          return;
        }
        if (playStatus == '1') {
          drawFrame(159, 121, 42);
          drawPauseButton();
          myDFPlayer.play();
          delay(100);
          playStatus = '2';
          return;
        }
        if (playStatus == '2') {
          drawFrame(159, 121, 42);
          drawPlayButton();
          myDFPlayer.pause();
          delay(100);
          playStatus = '1';
          return;
        }
      }
      // If we press the Previous Button
      if ((x >= 45) && (x <= 95) && (y >= 97) && (y <= 147)) {
        drawFrame(70, 121, 26);
        myDFPlayer.previous();
        delay(100);
        drawTrackBar();
      }
      // If we press the Next Button
      if ((x >= 227) && (x <= 277) && (y >= 97) && (y <= 147)) {
        drawFrame(252, 122, 26);
        myDFPlayer.next();
        delay(100);
        drawTrackBar();
      }
      // If we press the VolumeDown Button
      if ((x >= 35) && (x <= 75) && (y >= 165) && (y <= 209)) {
        drawUnderline(45, 205, 65, 205);
        if (iV >= 0 & iV <= 30) {
          iV--;
          drawVolumeDown();
        }
        myDFPlayer.volumeDown();
        delay(100);
      }
      // If we press the VolumeUp Button
      if ((x >= 230) && (x <= 280) && (y >= 165) && (y <= 209)) {
        drawUnderline(235, 205, 275, 205);
        if (iV >= 0 & iV <= 30) {
          iV++;
          drawVolumeUp();
        }
        myDFPlayer.volumeUp();
        delay(100);
      }
      // If we press the MENU Button
      if ((x >= 0) && (x <= 75) && (y >= 0) && (y <= 30)) {
        myGLCD.clrScr();
        drawHomeScreen();  // Draws the Home Screen
        currentPage = '0';
        return;
      }
    }
    // Updates the track bar
    if (playStatus == '1' || playStatus == '2') {
      trackPlayTime();
    }
    // Printing the clock in the upper right corner
    myGLCD.setFont(BigFont);
    myGLCD.setColor(255, 255, 255);
    currentClock = rtc.getTimeStr();
  }
  // Alarm Clock Screen
  if (currentPage == '2') {
    myGLCD.setFont(BigFont);
    myGLCD.setColor(255, 255, 255);
    myGLCD.print("MENU", 5, 5);
    myGLCD.print("Set Alarm", CENTER, 20);

    // Draws a colon between the hours and the minutes
    myGLCD.setColor(0, 255, 0);
    myGLCD.fillCircle (112, 65, 4);
    myGLCD.setColor(0, 255, 0);
    myGLCD.fillCircle (112, 85, 4);

    myGLCD.setFont(SevenSegNumFont);
    myGLCD.setColor(0, 255, 0);
    myGLCD.printNumI(aHours, 32, 50, 2, '0');
    myGLCD.printNumI(aMinutes, 128, 50, 2, '0');
    myGLCD.setColor(255, 255, 255);
    myGLCD.drawRoundRect (42, 115, 82, 145);
    myGLCD.drawRoundRect (138, 115, 178, 145);
    myGLCD.setFont(BigFont);
    myGLCD.print("H", 54, 122);
    myGLCD.print("M", 150, 122);

    myGLCD.drawRoundRect (215, 60, 303, 90);
    myGLCD.print("SET", 236, 67);
    myGLCD.drawRoundRect (215, 115, 303, 145);
    myGLCD.print("CLEAR", 220, 122);

    alarmNotSet = true;

    while (alarmNotSet) {
      if (myTouch.dataAvailable()) {
        myTouch.read();
        x = myTouch.getX(); // X coordinate where the screen has been pressed
        y = myTouch.getY(); // Y coordinates where the screen has been pressed
        //Set hours button
        if ((x >= 42) && (x <= 82) && (y >= 115) && (y <= 145)) {
          drawRectFrame(42, 115, 82, 145);
          aHours++;
          if (aHours >= 24) {
            aHours = 0;
          }
          myGLCD.setFont(SevenSegNumFont);
          myGLCD.setColor(0, 255, 0);
          myGLCD.printNumI(aHours, 32, 50, 2, '0');
        }
        // Set minutes buttons
        if ((x >= 138) && (x <= 178) && (y >= 115) && (y <= 145)) {
          drawRectFrame(138, 115, 178, 145);
          aMinutes++;
          if (aMinutes >= 60) {
            aMinutes = 0;
          }
          myGLCD.setFont(SevenSegNumFont);
          myGLCD.setColor(0, 255, 0);
          myGLCD.printNumI(aMinutes, 128, 50, 2, '0');
        }
        // Set alarm button
        if ((x >= 215) && (x <= 303) && (y >= 60) && (y <= 80)) {
          drawRectFrame(215, 60, 303, 90);
          if (aHours < 10 && aMinutes < 10) {
            alarmString = "0" + (String)aHours + ":" + "0" + (String)aMinutes + ":" + "00";
          }
          else if (aHours < 10 && aMinutes > 9) {
            alarmString = "0" + (String)aHours + ":" + (String)aMinutes + ":" + "00";
          }
          else if (aHours > 9 && aMinutes < 10) {
            alarmString = (String)aHours + ":" + "0" + (String)aMinutes + ":" + "00";
          }
          else {
            alarmString = (String)aHours + ":" + (String)aMinutes + ":" + "00";
          }
          myGLCD.setFont(BigFont);
          myGLCD.print("Alarm set for:", CENTER, 165);
          myGLCD.print(alarmString, CENTER, 191);

        }
        // Clear alarm button
        if ((x >= 215) && (x <= 303) && (y >= 115) && (y <= 145)) {
          drawRectFrame(215, 115, 303, 145);
          alarmString = "";
          myGLCD.setColor(0, 0, 0);
          myGLCD.fillRect(45, 165, 275, 210);
        }
        // If we press the MENU Button
        if ((x >= 0) && (x <= 75) && (y >= 0) && (y <= 30)) {
          alarmNotSet = false;
          currentPage = '0';
          myGLCD.clrScr();
          drawHomeScreen();  // Draws the Home Screen
        }
      }
    }

  }
  // Alarm activation
  if (alarmNotSet == false) {
    if (alarmString == rtc.getTimeStr()) {
      myGLCD.clrScr();
      myDFPlayer.volume(25);
      myDFPlayer.play(1);
      delay(100);
      myGLCD.setFont(BigFont);
      myGLCD.setColor(255, 255, 255);
      myGLCD.print("ALARM", CENTER, 90);
      myGLCD.drawBitmap (127, 10, 65, 64, AlarmButton);
      myGLCD.print(alarmString, CENTER, 114);
      myGLCD.drawRoundRect (94, 146, 226, 170);
      myGLCD.print("DISMISS", CENTER, 150);
      boolean alarmOn = true;
      while (alarmOn) {
        if (myTouch.dataAvailable()) {
          myTouch.read();
          x = myTouch.getX(); // X coordinate where the screen has been pressed
          y = myTouch.getY(); // Y coordinates where the screen has been pressed

          // Stop alarm button
          if ((x >= 94) && (x <= 226) && (y >= 146) && (y <= 170)) {
            drawRectFrame(94, 146, 226, 170);
            alarmOn = false;
            alarmString = "";
            myGLCD.clrScr();
            myDFPlayer.stop();
            delay(100);
            currentPage = '0';
            playStatus = '0';
            myDFPlayer.volume(15);
            drawHomeScreen();
          }

        }
      }
    }
  }
}

void drawHomeScreen() {
  myGLCD.setBackColor(0, 0, 0); // Sets the background color of the area where the text will be printed to black
  myGLCD.setColor(255, 255, 255); // Sets color to white
  myGLCD.setFont(BigFont); // Sets font to big
  myGLCD.print(rtc.getDateStr(), 153, 7);
  myGLCD.print("T:", 7, 7);
  myGLCD.printNumI(rtc.getTemp(), 39, 7);
  myGLCD.print("C", 82, 7);
  myGLCD.setFont(SmallFont);
  myGLCD.print("o", 74, 5);
  if (alarmString == "" ) {
    myGLCD.setColor(255, 255, 255);
    myGLCD.print("n u h a f a", CENTER, 215);
  }
  else {
    myGLCD.setColor(255, 255, 255);
    myGLCD.print("Alarm set for: ", 68, 215);
    myGLCD.print(alarmString, 188, 215);
  }
  drawMusicPlayerButton();
  drawAlarmButton();
  drawHomeScreen();
}

void drawMusicPlayerScreen() {
  // Title
  myGLCD.setBackColor(0, 0, 0); // Sets the background color of the area where the text will be printed to black
  myGLCD.setColor(255, 255, 255); // Sets color to white
  myGLCD.setFont(BigFont); // Sets font to big
  myGLCD.print("MENU", 5, 5); // Prints the string on the screen
  myGLCD.setColor(255, 0, 0); // Sets color to red
  myGLCD.drawLine(0, 26, 319, 26); // Draws the red line

  myGLCD.setColor(255, 255, 255); // Sets color to white
  myGLCD.setFont(SmallFont); // Sets font to big
  myGLCD.print("n u h a f a", CENTER, 215); // Prints the string on the screen

  // Volume Bar
  myGLCD.setColor(255, 255, 255);
  myGLCD.fillRect (78, 184, 78 + 150, 184 + 8);
  myGLCD.setColor(240, 196, 30);
  myGLCD.fillRect (78, 184, 78 + 75, 184 + 8);

  // Track Bar
  myGLCD.setColor(255, 255, 255);
  myGLCD.fillRect (48, 50, 48 + 224, 50 + 8);
  myGLCD.setFont(SmallFont);
  myGLCD.setColor(255, 255, 255);
  myGLCD.print("0:00", 8, 48);
  myGLCD.print("-0:00", 276, 48);

  drawPlayButton();
  if (playStatus == '2') {
    drawPauseButton();
  }
  drawPreviousButton();
  drawNextButton();
  drawVolumeDown();
  drawVolumeUp();
}

void drawMusicPlayerButton() {
  myGLCD.drawBitmap (55, 125, 65, 64, MusicPlayerButton);
}
void drawAlarmButton() {
  myGLCD.drawBitmap (195, 125, 65, 64, AlarmButton);
}
void drawPlayButton() {
  myGLCD.drawBitmap (118, 79, 83, 83, ButtonPlay);
}
void drawPauseButton() {
  myGLCD.drawBitmap (118, 79, 83, 83, ButtonPause);
}
void drawNextButton() {
  myGLCD.drawBitmap (227, 97, 50, 50, NextButton);
}
void drawPreviousButton() {
  myGLCD.drawBitmap (45, 97, 50, 50, PreviousButton);
}
void drawVolumeDown() {
  myGLCD.drawBitmap (50, 177, 16, 23, VolumeDown);
}
void drawVolumeUp() {
  myGLCD.drawBitmap (241, 175, 34, 28, VolumeUp);
}
// check for if Mp3 Player is stopped
bool checkFor_mp3IsStopped() {
  if (myDFPlayer.available() > 0) {
     printDetail(myDFPlayer.readType(), myDFPlayer.read()); //Print the detail message from DFPlayer to handle different errors and states.
    return true;
}
else return false;
}

// Highlights the button when pressed
void drawFrame(int x, int y, int r) {
  myGLCD.setColor(255, 0, 0);
  myGLCD.drawCircle (x, y, r);
  while (myTouch.dataAvailable())
    myTouch.read();
  myGLCD.setColor(0, 0, 0);
  myGLCD.drawCircle (x, y, r);
}
void drawRectFrame(int x1, int y1, int x2, int y2) {
  myGLCD.setColor(255, 0, 0);
  myGLCD.drawRoundRect (x1, y1, x2, y2);
  while (myTouch.dataAvailable())
    myTouch.read();
  myGLCD.setColor(255, 255, 255);
  myGLCD.drawRoundRect (x1, y1, x2, y2);
}
void drawUnderline(int x1, int y1, int x2, int y2) {
  myGLCD.setColor(255, 0, 0);
  myGLCD.drawLine (x1, y1, x2, y2);
  while (myTouch.dataAvailable())
    myTouch.read();
  myGLCD.setColor(0, 0, 0);
  myGLCD.drawLine (x1, y1, x2, y2);
}

// Sound bar
void drawVolume(int x) {
  myGLCD.setColor(255, 255, 255);
  myGLCD.fillRect (78 + 5 * x, 184, 78 + 150, 184 + 8);
  myGLCD.setColor(240, 196, 30);
  myGLCD.fillRect (78, 184, 78 + 5 * x, 184 + 8);
}

// Clears the track bar
void drawTrackBar() {
  myGLCD.setColor(255, 255, 255);
  myGLCD.fillRect (48, 50, 48 + 224, 50 + 8);
}
// Updates the track bar
void trackPlayTime() {
  totalTime = myDFPlayer.readState();
  delay(10);
  elapsedTime = myDFPlayer.readState();
  delay(10);
  minutes = (int)elapsedTime / 60;
  seconds = (((float)elapsedTime / 60) - minutes) * 60;
  playback = totalTime - elapsedTime;
  minutesR = (int)playback / 60;
  secondsR = (((float)playback / 60) - minutesR) * 60;

  myGLCD.setFont(SmallFont);
  myGLCD.setColor(255, 255, 255);
  myGLCD.printNumI(minutes, 8, 48);

  myGLCD.print(":", 16, 48);
  myGLCD.printNumI((int)seconds, 24, 48, 2, '0');

  myGLCD.print("-", 276, 48);
  myGLCD.printNumI(minutesR, 284, 48);
  myGLCD.print(":", 292, 48);
  myGLCD.printNumI((int)secondsR, 300, 48, 2, '0');

  int trackBarX = map(elapsedTime, 0, totalTime, 0, 224);
  myGLCD.setColor(255, 0, 0);
  myGLCD.fillRect (48, 50, 48 + trackBarX, 50 + 8);

  if (totalTime == elapsedTime) {
    myDFPlayer.next();
    delay(30);
    myGLCD.setColor(255, 255, 255);
    myGLCD.fillRect (48, 50, 48 + 224, 50 + 8);
  }
}

void printClock(int x, int y) {
  if ( currentClock != rtc.getTimeStr()) {
    myGLCD.print(rtc.getTimeStr(), x, y);
    currentClock = rtc.getTimeStr();
  }
}

void drawColon() {
  myGLCD.setColor(0, 255, 0);
  myGLCD.fillCircle (112, 65, 4);
  myGLCD.setColor(0, 255, 0);
  myGLCD.fillCircle (112, 85, 4);

  myGLCD.setColor(0, 255, 0);
  myGLCD.fillCircle (208, 65, 4);
  myGLCD.setColor(0, 255, 0);
  myGLCD.fillCircle (208, 85, 4);
}
void drawHomeClock() {
  timeString = rtc.getTimeStr();
  currentHours = timeString.substring(0, 2);
  currentMinutes = timeString.substring(3, 5);
  currentSeconds = timeString.substring(6, 8);
  myGLCD.setFont(SevenSegNumFont);
  myGLCD.setColor(0, 255, 0);
  myGLCD.print(currentSeconds, 224, 50);
  myGLCD.print(currentMinutes, 128, 50);
  myGLCD.print(currentHours, 32, 50);
  drawColon();
}
[/code]

if you notice any mistake that i missed,please do tell me .Thank youuuuu

8 August-i uploaded the code but sometimes the lcd just show me a dim white screen or sometimes black .I have tested the lcd before uploading my code using theMCUFRIEND_kbv(graphic test and bit map at the example) and it worked out just fine so hmm.

Im using arduino mega 2560 and 3.5 lcd(lcd link i bought is below this)
https://shopee.com.my/3.5-inch-ili9486-480x320-TFT-Touch-Shield-LCD-Module-Arduino-Uno-Mega2560-Raspberry-Pi-Display-i.132528683.9808090937?position=10

the lcd driver chip is 101(just so you know)

Hello
The linker is looking for the references to the button functions called.
I guess header file is missing. DonĀ“t ask me which one.

This does not look correct!

extern unsigned int MusicPlayerButton = 0x1040;

etc

Well can you explain and what should i do?

I showed you how to edit the first line . . now it's up to you!

This does not look correct also.

I would suggest

extern unsigned int MusicPlayerButton;

i see thank youuu

Well,the code is fine but when i upload it the lcd tft still showing white screen and sometimes it's white and dim before going black and then dim white again