Pi3 Video signal out problems. ---I need a comfig file!!!!

[nuneberg]

Hello.

I have desolder/removed USB, ethernet ports on my raspberry pi 3. and the GPIO pins.
but i have not been able to get analog video signal out the display / TV.

it works fine with HDMI. but for my build i need to be able to get video out of the pi3 with just the signal cable.

I have also tried soldered(do not kown if that work is correct spelled) the video signal cable direct to test point PP24 on the back of the pi, but no luck getting image on the display or TV.

In addition to this i have tries to change settings in Config file.

Added the following line to the configuration file
sdtv_mode=2
hdmi_force_hotplug=1


Any ide on how to proseed?

[nuneberg]

20161119_110409.jpg (4.31 MiB) Viewed 9507 times

[kirestus]

have you double checked that you soldered your video wire to the right pad?

[nuneberg]

I soldered it to PP24 on the back og the PCB.
Same spot as sota's pi3 build.

Screenshot_20161120-181222.png (2.99 MiB) Viewed 9492 times

[kirestus]

Can you copy your configure.txt

Maybe you forgot to comment something out

[nuneberg]

# 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

# uncomment if you get no picture on HDMI for a default "safe" mode
#hdmi_safe=1

# uncomment this if your display has a black border of unused pixels visible
# and your display can output without overscan
disable_overscan=0

# uncomment the following to adjust overscan. Use positive numbers if console
# goes off screen, and negative if there is too much border
#overscan_left=16
#overscan_right=16
#overscan_top=16
#overscan_bottom=16

# uncomment to force a console size. By default it will be display's size minus
# overscan.
#framebuffer_width=1280
#framebuffer_height=720

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

# uncomment to force a specific HDMI mode (this will force VGA)
#hdmi_group=1
#hdmi_mode=1

# uncomment to force a HDMI mode rather than DVI. This can make audio work in
# DMT (computer monitor) modes
#hdmi_drive=2

# uncomment to increase signal to HDMI, if you have interference, blanking, or
# no display
#config_hdmi_boost=4

# uncomment for composite PAL
sdtv_mode=2

#uncomment to overclock the arm. 700 MHz is the default.
#arm_freq=800

# Uncomment some or all of these to enable the optional hardware interfaces
#dtparam=i2c_arm=on
#dtparam=i2s=on
#dtparam=spi=on

# Uncomment this to enable the lirc-rpi module
#dtoverlay=lirc-rpi

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

# Enable audio (loads snd_bcm2835)
dtparam=audio=on
#gpu_mem_256=128
#gpu_mem_512=256
#gpu_mem_1024=256
#overscan_scale=1
gpu_mem=256



Here is my config text @kirestus
I outline the 2 settings i have tried with bold text for you to see.

Do i need to remove HDMI socket for it to work? ( i am afraid i do not get any picture if i do that)

[kirestus]

Hey it looks like you are trying to force an hdmi video output
put a # in front of hdmi_force_hotplug=1
so that it reads
#hdmi_force_hotplug=1

source
http://raspberrypi.stackexchange.com/qu ... rn-on-hdmi

right now you are telling your pi to to send a video signal through the hdmi output even if it cant find one, if you leave it like this it will give you the option to use an hdmi screen if its hooked up but default to composite, if this doesnt work i can ssh into my pi and send you my config.txt

dont desolder your hdmi port, i hear its quite difficult to do by hand

[nuneberg]

Thank you. @Kirestus

I was just down in my workshop testing a brand new out of the box pi3, with a original Composite 3,5mm jack. And i got same result on both pi`s. They do not give any picture out of the composite video.

but i will go down agian shortly an try your #-Fix in the config file.
I let you know how it goes. =)

[nuneberg]

@Kirestus

I tested. But still no luck on the pi`s. Tested Both.


Can you upload your config file?

[RetroGamingNow]

@Kirestus

I tested. But still no luck on the pi`s. Tested Both.


Can you upload your config file?

I tested this same setup last night and had no issues. I did not however test the HDMI out but a silly question may be do you have an sd card with an OS installed before powering it on and power getting to your screen. Probably do but i have seen many people who forget that simple step.