ESP32-S3 Camera (Goouuu-Cam) Power Pown Pin for Deepsleep

I have purchased this ESP32-S3 model with camera adapter which works fine with these settings

esphome:
  name: $hostname
  platformio_options:
      board_build.arduino.memory_type: qio_opi
  
esp32:
  board: esp32-s3-devkitc-1
  framework:
    type: arduino`

but I cannot get the camera to power off during deep sleep and therefore have too high power consumption during sleep:

with camera connected

my camera setting are these:

esp32_camera:
  external_clock:
    pin: GPIO15
    frequency: 20MHz
  i2c_pins:
    sda: GPIO4
    scl: GPIO5
  data_pins: [GPIO11, GPIO9, GPIO8, GPIO10, GPIO12, GPIO18, GPIO17, GPIO16]
  vsync_pin: GPIO6
  href_pin: GPIO7
  pixel_clock_pin: GPIO13
  power_down_pin: GPIO42 # tried 21 14 46 03 47 41
  # Image settings
  resolution: 1600x1200
  max_framerate: 1fps
  idle_framerate: 0.02fps
  jpeg_quality: 10
  name: ESP32 Camera

The camera wont be powered down.
I found the schematics and Pin outs here.

there is a OV PWDN listed but I could not figure out which GPIO it is connected.

  power_down_pin: GPIO42 # tried 21 14 46 03 47 41

I tried several but could not get it to work.
Maybe this board does not allow a power down?
Any help is much appreciated.

sleep without camera