Help! Unable to get anything on screen via composite

foxcek

Hey! I hope someone is able to help me out, I'm having a really hard time changing my output from HDMI to composite. In an attempt to build an arcade unit using an old CRT television I purchased a 3.5mm to tri RCA cable. Unfortunately I haven't had any luck changing anything in config.txt to force a display onto the TV.

(The cable I purchased from Amazon has positive reviews from people using it with Raspbery Pi 3 and I've tested an old camcorder to make sure it's working)

I've pasted my current config.txt here so hopefully someone can point me in the right direction? Any help would be appreciated! Greatly!! :) (I'm located in the US so looking for NTSC output)

I'm using Raspberry Pi 3B with Retropie

# For more options and information see
# http://rpf.io/configtxtreadme
# 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
hmdi_ignore_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=0

#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=320

edmaul69

@foxcek if you bought a cheap cable the red is video and the yellow is the right audio on the pi. Even if it works correctly with your camcorder.

foxcek

This post is deleted!

foxcek

@edmaul69 said in Help! Unable to get anything on screen via composite:

@foxcek if you bought a cheap cable the red is video and the yellow is the right audio on the pi. Even if it works correctly with your camcorder.

Thanks for the quick response edmaul69. I forgot to mention I've tried switching the RCA cables around in multiple combinations. (red to yellow, white to yellow).

I'm also failing to get it to display on two seperate TVs

edmaul69

@foxcek you arent keeping an hdmi cable plugged in either right?

edmaul69

This post is deleted!

edmaul69

@foxcek also try sdtv mode 16 (320x240)

foxcek

No HDMI plugged in and sdtv mode 16 also doesn't work either :(

I'm stumped

edmaul69

@foxcek the only thing i can see to try in the config is hashtagging out disable overscan. Other than that no clue.

edmaul69

@foxcek please read my last post. Can you take a picture of the tv screen when you hit the info button or change the channel to the video mode you are using? I want to see what mode its on. Plus a pic of the back of your tv's video hookups with and without the cables plugged in.