adafruit motorsheild v1.0 stopped working

well i bought the adafruit motor shield v1.0 around 3-4 years back and it was working perfectly fine at that time.
well i used it for a project of mine and it hasn't been used since then.Now it doesn't work even if i upload the test code form the library that is motor party.
the same works on a sheild i created with l293d you can take it as using a bare l293d without any library needed.the shield just can say an alternative of breadboard.
here's the code

// Adafruit Motor shield library
// copyright Adafruit Industries LLC, 2009
// this code is public domain, enjoy!

#include <AFMotor.h>
#include <Servo.h> 

// DC motor on M2
AF_DCMotor motor(2);
// DC hobby servo
Servo servo1;
// Stepper motor on M3+M4 48 steps per revolution
AF_Stepper stepper(48, 2);

void setup() {
  Serial.begin(9600);           // set up Serial library at 9600 bps
  Serial.println("Motor party!");
  
  // turn on servo
  servo1.attach(9);
   
  // turn on motor #2
  motor.setSpeed(200);
  motor.run(RELEASE);
}

int i;

// Test the DC motor, stepper and servo ALL AT ONCE!
void loop() {
  motor.run(FORWARD);
  for (i=0; i<255; i++) {
    servo1.write(i);
    motor.setSpeed(i);  
    stepper.step(1, FORWARD, INTERLEAVE);
    delay(3);
 }
 
  for (i=255; i!=0; i--) {
    servo1.write(i-255);
    motor.setSpeed(i);  
    stepper.step(1, BACKWARD, INTERLEAVE);
    delay(3);
 }
 
  motor.run(BACKWARD);
  for (i=0; i<255; i++) {
    servo1.write(i);
    motor.setSpeed(i);  
    delay(3);
    stepper.step(1, FORWARD, DOUBLE);
 }
 
  for (i=255; i!=0; i--) {
    servo1.write(i-255);
    motor.setSpeed(i);  
    stepper.step(1, BACKWARD, DOUBLE);
    delay(3);
 }
}

please help

An L293D is ofcourse the wrong chip for most modern low-impedance stepper motors.
Did you use the same stepper as 4 years ago?
Leo..

We'll first of all I am using dc motor not stepper .And yes the whole project is same as it was 4 years back .
The dc motors still work with direct supply.And the project is as it is (it was an obstacle detection robot)
I don't understand what has happened cause I even replaced the l293d but didn't work

Didn't get any reply

Archut:
Didn't get any reply

Didn't get the full picture.
Just the code, and "it used to work, but now it doesn't".
Should we use a crystal ball?
Leo..