Update cutipy_power_test

cutipy_power_test.py

@@ -41,10 +41,10 @@ class PowerTest():
                 self.standby(self.led2)
                 break
             elif self.switch3():
-                self.lcd_init(self.led3)
+                self.lcd_sleep(self.led3)
                 break
             elif self.switch4():
-                self.lcd_sleep(self.led4)
+                self.wifi_sleep(self.led4)
                 break
             pyb.wfi()
 
@@ -82,7 +82,6 @@ class PowerTest():
 
         pyb.delay(500)
 
-
         pyb.standby()
 
         return None
@@ -118,3 +117,6 @@ class PowerTest():
         lcd.write('Going to standby')
         pyb.delay(1500)
         lcd.sleep()
+        pyb.delay(500)
+        pyb.standby()
+