Dead LCD on StickC

[Mati]

Strange think happend, one of my stickC got a problem with internal LCD screen. Its dark without any backlight.
2 weeks ago all was fine when i validate env Hat, both stick was fine until now.

Any clue for HW debug ? or RMA process ?

Via com all looks good i am able to program it but without any responce on LCD.

Boot code:
19:15:04.485 -> I (8) boot: ESP-IDF v3.3-beta1-695-g34c1c5686 2nd stage bootloader
19:15:04.485 -> I (9) boot: compile time 11:10:42
19:15:04.485 -> I (9) boot: Enabling RNG early entropy source...
19:15:04.485 -> I (13) boot: SPI Speed : 80MHz
19:15:04.485 -> I (17) boot: SPI Mode : DIO
19:15:04.485 -> I (21) boot: SPI Flash Size : 4MB
19:15:04.532 -> I (26) boot: Partition Table:
19:15:04.532 -> I (29) boot: ## Label Usage Type ST Offset Length
19:15:04.532 -> I (36) boot: 0 nvs WiFi data 01 02 00009000 00006000
19:15:04.532 -> I (44) boot: 1 phy_init RF data 01 01 0000f000 00001000
19:15:04.532 -> I (51) boot: 2 factory factory app 00 00 00010000 001f0000
19:15:04.532 -> I (59) boot: 3 internalfs Unknown data 01 81 00200000 00200000
19:15:04.532 -> I (66) boot: End of partition table
19:15:04.532 -> I (70) esp_image: segment 0: paddr=0x00010020 vaddr=0x3f400020 size=0xe5bdc (941020) map
19:15:04.814 -> I (350) esp_image: segment 1: paddr=0x000f5c04 vaddr=0x3ffbdb60 size=0x034dc ( 13532) load
19:15:04.860 -> I (354) esp_image: segment 2: paddr=0x000f90e8 vaddr=0x40080000 size=0x00400 ( 1024) load
19:15:04.860 -> I (357) esp_image: segment 3: paddr=0x000f94f0 vaddr=0x40080400 size=0x06b20 ( 27424) load
19:15:04.860 -> I (374) esp_image: segment 4: paddr=0x00100018 vaddr=0x400d0018 size=0xdbeac (900780) map
19:15:05.095 -> I (633) esp_image: segment 5: paddr=0x001dbecc vaddr=0x40086f20 size=0x0f0c8 ( 61640) load
19:15:05.141 -> I (654) esp_image: segment 6: paddr=0x001eaf9c vaddr=0x400c0000 size=0x00064 ( 100) load
19:15:05.141 -> I (654) esp_image: segment 7: paddr=0x001eb008 vaddr=0x50000000 size=0x00808 ( 2056) load
19:15:05.141 -> I (675) boot: Loaded app from partition at offset 0x10000
19:15:05.141 -> I (675) boot: Disabling RNG early entropy source...
19:15:05.141 -> I (676) cpu_start: Pro cpu up.
19:15:05.141 -> I (679) cpu_start: Application information:
19:15:05.188 -> I (684) cpu_start: Compile time: Aug 30 2019 11:10:48
19:15:05.188 -> I (690) cpu_start: ELF file SHA256: 0000000000000000...
19:15:05.188 -> I (696) cpu_start: ESP-IDF: v3.3-beta1-695-g34c1c5686
19:15:05.188 -> I (703) cpu_start: Starting app cpu, entry point is 0x400836e4
19:15:05.188 -> I (705) cpu_start: App cpu up.
19:15:05.188 -> I (713) heap_init: Initializing. RAM available for dynamic allocation:
19:15:05.188 -> I (720) heap_init: At 3FFAE6E0 len 0000F480 (61 KiB): DRAM
19:15:05.188 -> I (726) heap_init: At 3FFCB2C8 len 00014D38 (83 KiB): DRAM
19:15:05.235 -> I (732) heap_init: At 3FFE0440 len 00003AE0 (14 KiB): D/IRAM
19:15:05.235 -> I (739) heap_init: At 3FFE4350 len 0001BCB0 (111 KiB): D/IRAM
19:15:05.235 -> I (745) heap_init: At 40095FE8 len 0000A018 (40 KiB): IRAM
19:15:05.235 -> I (751) cpu_start: Pro cpu start user code
19:15:05.235 -> I (97) cpu_start: Starting scheduler on PRO CPU.
19:15:05.235 -> I (0) cpu_start: Starting scheduler on APP CPU.
19:15:05.362 ->
19:15:05.362 -> Internal FS (FatFS): Mounted on partition 'internalfs' [size: 2097152; Flash address: 0x200000]
19:15:05.403 -> ----------------
19:15:05.403 -> Filesystem size: 2035712 B
19:15:05.403 -> Used: 479232 B
19:15:05.403 -> Free: 1556480 B
19:15:05.403 -> ----------------
19:15:05.685 -> I (450) [TFTSPI]: attached display device, speed=8000000
19:15:05.685 -> I (450) [TFTSPI]: bus uses native pins: false
19:15:06.193 -> [ M5 ] node id:***, api key:
19:15:07.541 -> start m5ucloud monitor

19:15:07.541 ->
19:15:07.541 -> I (2291) m5uart: Creat m5uart task