STM32f4769I Display is not working

[KSark.1]

Can you please help me understand why the display of the STM32F769I-DISC board is not working anymore , it was fine 4 days ago , i recently installed the latest software packs and IDE's and tried to flash some custom application and the display was gone , I thought I was doing something wrong so I tried to flash the demo code from the st site still no luck , I have found that the display backlight is on and the right hand(please see the image highlighted in red) side is hot to touch (~45-60ish ).

I am very positive that there was no short circuit or physical damage to the board.

I want to know if the software configuration (from cube mx or touchgfx ) can damage the display ? If yes then please help me understand those scenarios . I will buy a new display but want to be sure that that new display also wont just stop working like this one did.

[KDJEM.1]

Hello @Kankan Sarkar​ and welcome to the Community 🙂 ,

Could you please check if the display is damaged or not by using the LCD_DSI examples from the STM32CubeF7 package.

If the STM32F769I-Discovery board is attached to a MB1166-A09 LCD display revision, you just need to enable the right target hardware as defined in stm32f769i_discovery.h

By default, the old board version with OTM8009A is selected ,

/* options in order to select the target board revision: !!!!!!!!!! */
/* USE_STM32F769I_DISCO */ /* Applicable for all boards except STM32F769I DISCOVERY REVB03 */
/* USE_STM32F769I_DISCO_REVB03 */ /* Applicable only for STM32F769I DISCOVERY w/ MB1166-A09 LCD daughter board connected on */

Please let me know if the problem is still persists.

Thank you.

Kaouthar

[KSark.1]

That might be a probable cause , I will give it a try this eve.

Btw , i have tried to load the demo software found here , do you think that the the demo is also built for STM32F769I_DISCO_REVB03.

[KSark.1]

So i have tried to uploading one of the example project binaries and the display did not work . After a teardown i found this(highlighted in red boundary) whole region was hot (i could not keep my finger on there for long) but not burning.
 

Ordered a new display unit  , hopefully i do not brick that too.