I have a LILYGO ESP32 T_Display v1.1

I try to be in deep sleep mode with this board. I am not able to go below 36ma. In principle I should reach something below 1ma

Nothing is connected on the board and the small red LED has been removed.

I did a lot of research and did a ton of testing.

Can anybody help me ?

Here is my code:

#include <TFT_eSPI.h> // Hardware-specific library
#include <SPI.h>

TFT_eSPI tft = TFT_eSPI();

void setup() {

tft.init();

delay(10000);

tft.writecommand(ST7789_DISPOFF);// Switch off the display
delay(5);
tft.writecommand(ST7789_SLPIN);// Sleep the display driver
delay(5);
pinMode(TFT_BL,OUTPUT);
digitalWrite(TFT_BL, LOW); // Should force backlight off

//gpio_hold_en(GPIO_NUM_4);
//gpio_deep_sleep_hold_en();
esp_deep_sleep_start();

}

void loop() {
  // put your main code here, to run repeatedly:

}

Thank's a lot !