raspberry pi 3 white screen

[Bopthompson]

Hey guys,

Just to give you some background info i have a 3.5 inch tft adafruit screen (wermy's first GBZ build) and i cant for the life of me get the screen to work outside of a blank white screen. i have installed the drivers for the screen and ive double checked my wiring over and over. I've even tried to use kites config file for the screen since he uses the same screens with his board. The ribbon cable is not damaged and neither is the board. bellow i will post pictures of all the wiring please someone help i'm starting to lose my mind with this.

[Bopthompson]

Anyone help?

[VeteranGamer]

Anyone help?

a bit of patience...
and maybe searching the forums a bit might help (a lot info is already out there, and most issues have been covered)....

(just one example)
https://sudomod.com/forum/viewtopic.php ... 825#p49644


for a start some of your soldering needs attention
(even if it is/you are in the test process, there's no need to have rough solder connections... that's just asking for trouble)


and more importantly, it looks like you've wired your screen incorrectly....
from what i can see...
PP24 is where your white wire should be (need to have good solder connections)....
PP25 is the Audio Left (this should not be used for the screen)
PP26 is the Audio Right (this should not be used for the screen)

the yellow wire i'm assuming needs to be connected to a ground (like it is on the Pi Zero, in Wermy guide)


i hope this helps....


.

[Bopthompson]

Anyone help?

a bit of patience...
and maybe searching the forums a bit might help (a lot info is already out there, and most issues have been covered)....

(just one example)
https://sudomod.com/forum/viewtopic.php ... 825#p49644


for a start some of your soldering needs attention
(even if it is/you are in the test process, there's no need to have rough solder connections... that's just asking for trouble)


and more importantly, it looks like you've wired your screen incorrectly....
from what i can see...
PP24 is where your white wire should be (need to have good solder connections)....
PP25 is the Audio Left (this should not be used for the screen)
PP26 is the Audio Right (this should not be used for the screen)

the yellow wire i'm assuming needs to be connected to a ground (like it is on the Pi Zero, in Wermy guide)


i hope this helps....


.

Tried swapping white wire to pp24 and yellow to pp3 and no luck still. I do class 3 soldering on the dayly I just was making the electrical connection to make sure it worked.

[ABH]

Reinstall retropie

And use original config file
Kite config is for DPI screen

You should use 1 wire not both yellow and white
Try yellow or white on PP24

Also check your ribbon cable

[VeteranGamer]

Tried swapping white wire to pp24 and yellow to pp3 and no luck still. I do class 3 soldering on the dayly I just was making the electrical connection to make sure it worked.

i'm not sure what class 3 soldering is.....




but after looking at this, it may be an idea to upgrade to class 1...
(even if just soldering to make electrical connection, make sure the connection is properly done...
look at the yellow wire, and that's your composite connection point on the Pi3 PP24)...




also as ABH has pointed out....

the ribbon cable isnt seated properly....



the black line is an indicator if the ribbon cable is connected properly, and that sure doesn't look like it is


.

[Bopthompson]

Tried swapping white wire to pp24 and yellow to pp3 and no luck still. I do class 3 soldering on the dayly I just was making the electrical connection to make sure it worked.

i'm not sure what class 3 soldering is.....




but after looking at this, it may be an idea to upgrade to class 1...
(even if just soldering to make electrical connection, make sure the connection is properly done...
look at the yellow wire, and that's your composite connection point on the Pi3 PP24)...




also as ABH has pointed out....

the ribbon cable isnt seated properly....



the black line is an indicator if the ribbon cable is connected properly, and that sure doesn't look like it is


.

The ribbon cable was reseated still no video I've tried the yellow and white each on the pp24 I'm starting to lose hope backlight comes on so I know it's getting the proper power and all. I just have no clue why the video isn't working

[vnman]

show us your config.txt file

[Bopthompson]

# For more options and information see
# http://www.raspberrypi.org/documentatio ... fig-txt.md
# Some settings may impact device functionality. See link above for details

# Additional overlays and parameters are documented /boot/overlays/README

# Some settings from the orignal config.txt
gpu_mem_256=128
gpu_mem_512=256
gpu_mem_1024=256
overscan_scale=1

##########################
#### GENERIC SETTINGS ####
##########################

# Disable low voltage warning when on 3.3v
avoid_warnings=2

# Enable safe shutdown
dtoverlay=gpio-poweroff,gpiopin=22,active_low="y"

# Disable onboard audio
dtparam=audio=off

# SD overclock (ONLY IF SD SUPPORTS IT)
#dtoverlay=sdtweak,overclock_50=100

#######################
#### HDMI SETTINGS ####
#######################

# uncomment if hdmi display is not detected and composite is being output
#hdmi_force_hotplug=1

# uncomment to force a specific HDMI mode (here we are forcing 800x480!)
#hdmi_group=2
#hdmi_mode=1
#hdmi_mode=87
#hdmi_cvt=800 480 60 6 0 0 0

#######################
#### DPI SETTINGS #####
#######################

# Enable DPI
dtoverlay=dpi18
overscan_left=0
overscan_right=0
overscan_top=0
overscan_bottom=0
enable_dpi_lcd=1
display_default_lcd=1
dpi_group=2
dpi_mode=87

# Enable 320x240 custom display mode
framebuffer_width=320
framebuffer_height=240
display_rotate=2
dpi_output_format=24597 #rgb
hdmi_timings=320 1 20 30 38 240 1 4 3 10 0 0 0 60 0 9600000 1

[VeteranGamer]

config

i dont know what operating system your using ....
but it doesnt look like Retropie (could be Recalbox) ....

the Retropie config will look something like this....




try using Retropie, and see what happens....




.