Composite video and audio not working

[scamw002]

Hi all,
I recently bought a 3 x RCA phono to scart cable and a 3.5mm stereo jack to 2 RCA phono cable from amazon. I tried connecting them up from the pi and into my TV but I could not get any images or audio. I have tested the cables using a dvd player and they seemed to work. Any ideas on what to do to get it to work?

Raspberry pi model B running openelec from noobs.

http://www.amazon.co.uk/3-5mm-stereo-Ph ... f=pd_ybh_1

http://www.amazon.co.uk/Metre-Scart-Tri ... f=pd_ybh_1

[mahjongg]

set up your TV so it actually uses the SCART input, its unlikely both video AND audio outputs of the PI don't work.

the cables shouldn't be a problem.

are you aware that when running NOOBS you should have pressed 2 (PAL) or 3 (NTSC) to switch from HDMI to those composite outputs? Then you have to lock the video mode to this, (you get a choice to do so), i you didn't you might have locked the installed OS to use HDMI.

[FTrevorGowen]

Hi all,
I recently bought a 3 x RCA phono to scart cable and a 3.5mm stereo jack to 2 RCA phono cable from amazon. I tried connecting them up from the pi and into my TV but I could not get any images or audio. I have tested the cables using a dvd player and they seemed to work. Any ideas on what to do to get it to work?
Raspberry pi model B running openelec from noobs.
http://www.amazon.co.uk/3-5mm-stereo-Ph ... f=pd_ybh_1
http://www.amazon.co.uk/Metre-Scart-Tri ... f=pd_ybh_1

When installing OpenElec via the NOOBS installer what were you using as a display? (NOOBS defaults to HDMI and if you used an HDMI display that becomes "hard coded"** for any installed O.S.)
Trev.
** Although it can be changed using NOOBS recovery mode's editor to change entries in the O.S's config.txt file.

[chrisclement]

I also have a B+ running NooBs (that came with it). I have HDMI display but cannot get the composite video. I have a 4-conductor plug only and can try any combination to get the composite video but I am seeing nothing, I tried grounding the monitor to the USB shield and probed all 4 connections on the plug and 5 solder pads on the other side. Do I need to edit a file or do something special to turn it on? TIA

[techj2020]

Composite output is hard to get working on the b+. Try using white or red instead of yellow for video. The pinout of the cable may be slightly different than the pi's. Good luck, and if it still doesn't work consider buying a new cable.

[techj2020]

Oh and also, hold down the #3 or #4 button at startup when starting NOOBS

[drgeoff]

@scamw002

Ensure the switch on the SCART plug is set to "IN".

[chrisclement]

I traced the video connection to the same board component as the original B model so I am convinced that it is not a cabling problem. There is a brief burst of video when the board powers up and then it goes grey. Something is turning the composite video off. There is nothing in the HDMI port. I must be able to use the composite output for my intended app because HDMI monitors are much too expensive. Is there a config file or something to edit? I can use an HDMI monitor temporarily to prepare the board but not leave it permanently attached.

[FTrevorGowen]

I traced the video connection to the same board component as the original B model so I am convinced that it is not a cabling problem. There is a brief burst of video when the board powers up and then it goes grey. Something is turning the composite video off. There is nothing in the HDMI port. I must be able to use the composite output for my intended app because HDMI monitors are much too expensive. Is there a config file or something to edit? I can use an HDMI monitor temporarily to prepare the board but not leave it permanently attached.

When using NOOBS to install an O.S. it's best done with the display type (in your case composite video) you wish to use "all the time", as it can be difficult to change things "post-install". Since NOOBS defaults (and expects) HDMI, using different HDMI (compatible) displays does not often lead to major issues (eg. perhaps not the "best" resolution but you still get an image) but it's trickier to change from HDMI to composite (as I pointed out in an earlier post). FWIW, here is what I've done/noted:
http://www.cpmspectrepi.webspace.virgin ... e_Video.29
(For more detail follow the link therin to the previous tests of an older version of NOOBS)
Trev.

[scamw002]

Thanks for all the help
I found that changing the config.txt file by deleting all lines of code with the word hdmi in solve the issue. Also inserting a new SD card into the pi then booting it up managed to work if I pressed 3 on the keyboard.

[chrisclement]

Fixed it. I edited /boot/config.txt and commented out the hdmi_force_hotplug statement. Now I can choose at boot time.

[mikorians]

I also had nothing on my composite out (was red cable, heh), and could not make leafedit make changes to config.txt --- now as far as Linux is concerned, I am a total AMATEUR and was purely lucky in my google searching to figure all this out.

I had chosen the GUI for startup. I was not sure NOOBS wasn't going to destroy itself since it only had the chip itself to install to... Glad it didn't.
Any way to get that menu back? Or is it all now erased...?

The purchase Distro badly needs modification. I had used the almost impossibly lucky "sudo vi /boot/config.txt" to fix this. CLUMSY at best.
Monitor settings said can't find monitor or something.

But all works... Now.
Don't get me wrong-this thing's great! But let's fix the docs at least, eh?

[chrisclement]

Fixed it. I edited /boot/config.txt and commented out the hdmi_force_hotplug statement. Now I can choose at boot time.

Also, my Raspberry Pi hack: No need to buy that stupid cable for comp video!

[mikorians]

Any way I could contribute?
Since the micro usbs are manufactured, I guess not...
So, summary:
1. Make specific mention of it being ok to proceed in noobs install - not gonna self-destruct!
2. I would recommend putting composite options under the advanced menu during install - DESPERATELY missing.
3. Make mention that maybe the user would wish to USE said advanced menu for various optional hardware. - not everyone is an options person and may not realize you get ONE chance at it. This IS for beginners, right?

That's all that's missing here I think!

[arthurcurvello]

Hi, I am having the same problem but I can't manage to make it work on my Pi 1 b+.
I tried several things (including different images) but I think the problem is the cable.
It is a 3.5mm jack 2 x RCA (not 3!) it only have 'audio' channels. It is just like the one from amazon. The guy from the shop said it would work but the audio would be mono.
Is this possible or should I get a real TRRS (3 x RCA)?
I tried unpluging the cable very slowly and I could see the image distorted on the background.....

[drgeoff]

You will never get composite video from a B+ or RPi2 using a cable with a 3 pole plug.

[fruitoftheloom]

Hi, I am having the same problem but I can't manage to make it work on my Pi 1 b+.
I tried several things (including different images) but I think the problem is the cable.
It is a 3.5mm jack 2 x RCA (not 3!) it only have 'audio' channels. It is just like the one from amazon. The guy from the shop said it would work but the audio would be mono.
Is this possible or should I get a real TRRS (3 x RCA)?
I tried unpluging the cable very slowly and I could see the image distorted on the background.....

Yes the correctly wired cable TRRS 4 pole, can test with multi-meter

http://www.raspberrypi-spy.co.uk/2014/0 ... video-jack

http://www.dx.com/p/specified-av-cable- ... PgpNihFCAh