[circuit GEM] problem: LCD went black

[javi.124]

Hi, I have a GEM build that was working before. Without doing anything, LCD stopped working (pitch-black-off).
I tried powering the GEM up without SD card, to see if LCD backlight worked, nay. Tried with another LCD I have from a second GEM kit, not even backlight too.

It feels like a HW issue to me... I tried a couple of commands via SSH, but to be honest, I cannot tell if there is anything wrong or pointing to the issue in there. (see below)

May anyone be able to help, please?

Code: Select all

pi@retropie:/boot $ tvservice -s
state 0x12000a [HDMI DMT (87) RGB full 4:3 x4], 240x216 @ 57.00Hz, progressive
pi@retropie:/boot $ tvservice -n
[E] No device present
pi@retropie:/boot $ vcgencmd display_power
display_power=1
pi@retropie:/boot $ vcgencmd get_lcd_info
240 216 24
pi@retropie:/boot $ vcgencmd vcos log status
khrndisp         - warn
egl_server       - error
gencmd_file      - info
wdog             - warn
mmal-opaque      - error
mmalsrv          - error
gpus             - warn
vchiq_test       - info
audioserv        - warn
smct             - error
smservice        - error
vchiq_vc         - error
vchiq_sync       - warn
vchiq_srvtrace   - trace
vchiq_core_msg   - warn
vchiq_core       - warn
pixelvalve       - warn
dispmanx         - warn
hdmi             - info
hvs              - warn
cam_alloc        - warn
plat_conf        - warn
gpioman          - warn
confzilla_fe_fdt - warn
confzilla_be     - warn
board            - warn
brfs             - info
vcos_cmd         - info
default          - error
vc_suspend       - warn
clock            - warn
camsubs          - warn

[javi.124]

I have just realized that there is some activity on the back of the LCD: there is three spots that blink rapidly with a very faint white light, picture attached:

Gem raspberry LCD problem.jpeg (58.2 KiB) Viewed 1479 times