Pi Appears to be working but no video.

Question

Hi my name is Jeff,

My new Raspberry Pi 2 Model B with 1 Gig of RAM recently arrived.

I attached a keyboard, mouse and ethernet cable. I know the mouse and keyboard work because I've tested them on a PC as well as my other Raspbery pi. (my other pi is the old b model with 512 MB RAM and seperate audio/video etc)

I don't have a HDMI tv so I then Plugged in a wv735 universal lead with a 3.5mm stereo Jack plug on one end and 3 RCA plugs on the other end into the Combined 3.5mm audio jack and composite video outlet.

I then plugged in a micro-sd card (tried a 4Gig card and a 16G card) I know both cards were working because I tried them in PC and my other Pi.

I used both NOOBS and raspbian as the OS on the Micro-SD card. I downloaded the most up to date versions from

Downloads | Raspberry Pi

I then proceeded to write it onto the Micro-SD card using the relevant instructions for the OS I used.

I then plugged in a micro-sd card into the pi (tried a 4Gig card and a 16G card just in case available memory was the issue) I know both cards were working because I tried them in PC and my other Pi.

Next I plugged in the power supply which is a switching adapter, Model : HNP10l-Micro USB

Input = 100-240v , 50/60Hz , 45A

Output = 5.0v , 2000mA

The following link is to a page containing a better description of what I have.

http://www.adafruit.com/product/1995

The power supply should be good enough to use since it is the same type I use on my other pi.

When power plugged in:

Red and greed lights came on

Red stayed on and green flashed a little bit (don't know how long) before turning off

Red light stayed on

When I pressed number 3 or number 4 the green light came on momentarily however the TV screen remained blank.

The only time I got anything on the screen is when I started to take the 3.5 mm jack out but never an image you could properly see.

Everything seems to work fine as far as I can tell but I can't get audio/video to work. I'm assuming it's a cable problem but I'm not sure.

Please help me so I can actually use my new Pi.

clem57 · Accepted Answer

22: HOW TO USE THE A/V OUTPUT OF THE B+ AND 2B If you have a model B+ or 2B and want to use the composite Video (A/V) for composite video and analog sound, you need an A/V cable , like this one: But note that there are many cables that look exactly like this one but do NOT work! That is because the wiring within them must be correct! This is a picture listing the most common A/V cables, and their wiring: The Raspberry PI can use cables designed for the Ipod, or for the Microsoft Zune, but can also work with some "camcorder cables" (but see below) The PI does not work with the "hodgepodge" of systems that have pin 1 as GND. As in the picture above, the tables below count, from sleeve (1) to tip (4) of the four pole 3.5mm jack plug. A real "Raspberry PI model B+" 4-pole 3.5mm A/V output jack cable uses: B+ wired cable 1 Video out 2 GND 3 Right audio 4 Left audio Only Zune Cables are exactly right, because the PI want to keep left and right audio in the right place, and for some obscure reason iPod cables have those swapped. The most common, and reasonably compatible, cable that is on the market now, uses the iPod wiring: Ipod wired cable 1 Video out 2 GND 3 Left audio 4 Right audio Note that you can make this cable 100% compatible by switching the two audio channels, that is the white and red RCA plugs. Its possible that in future software releases, when the system detects you are using a B+ with composite video, the software will swap the audio channels automatically. A common cable that is also on the market now and often very cheap, is normally called a "camcorder cable" Camcorder cable 1 Right audio 2 GND 3 Video out 4 Left audio Note that you can use this cable by switching the video and right channels, that is the yellow and red RCA plugs. When using a "camcorder" cable, try plugging in the red RCA plug of the cable into the yellow RCA receptacle of your TV and see if you get a picture, if so you can put the yellow plug in the red receptacle, and the white plug into the white receptacle. Note that no cable you try to use should be able to damage your PI, so you can safely just try. The cheap ($1.99) cable below is a camcorder cable, and has been tested and is reported to work (with the "camcorder RCA swap"). http://www.amazon.com/Fosmon-Technology-Red-Yellow-White-Connectors-Camcorder/dp/B00HND2FW8 The iPod compatible cable below has also been confirmed to work, is more expensive but does not require the camcorder swap. http://www.amazon.com/gp/product/B004UCU72U/ Note that instead of such an A/V cable, you could also use an adapter like this. Note that the same reservations as for the cables apply, it might not work, or the signals come out of the wrong plugs. Also, normally its more of a hassle to use and more expensive, but you might have one lying around you can try: This one, http://www.ebay.co.uk/itm/380747364232? ... 3556628784 has been reported to work. Source: Raspberry Pi • View topic - Pitfalls for beginners I think that should explain why you switched colors and it worked! Cheers, Clem