doesn't boot, green light flashes, intermittent video signal

[kappaloot]

hi there,
today i've received my raspberry, but i have some problems setting it up.
As psu i tried an usb plug i used to recharge my mp3 (5V 1A) and the one for a sony ericsson (5V 700mA).
I tried two SD: a kingston 4gb sdhc class4 and a SD for Eee PC (8gb class 8)
I plugged it via hdmi to my pc monitor.
I tried to use both Raspbian and RaspBMC.
Always the same problem: red light on pwr (doesn't flash) green light on OK with a particular pattern:short short long short short long, then pause and the monitor says "hdmi no signal" and it starts again. Every now and then i can see the rasp logo with some writings, but it doesn't last enought to make me understand what's written there. I had just the time to read "sd". The fact is that the kingston sd is shown as compatible with the raspberry in the wiki, and i followed all the instructions carefully.

I've also tried to connect it to my tv with the composite cable. But the result was the same, but instead of "hdmi" signal it showed rainbow colors.

any ideas?

[Jim JKla]

Try with a wheezy install you can allways wipe later.

Also look at the previous Beta version

and look for stuff on the config.txt

Make sure your HDMI is plugged in and live before youpower your RPi

And have a look in the wiki for noob stuff

[Jim JKla]

Keep Trying

[redhawk]

If you have a voltmeter check the voltage between TP1 and TP2, what do you get??

Richard S.

[kappaloot]

Try with a wheezy install you can allways wipe later.

Also look at the previous Beta version

and look for stuff on the config.txt

Make sure your HDMI is plugged in and live before youpower your RPi

And have a look in the wiki for noob stuff

I used the wheezy install, if it's the one on the download page
I looked in the config file, i uncommented hdmi_safe=1, config_hdmi_boost=4 and hdmi_force_hotplug=1 but no results.
Now i'm trying to program the sd in ubuntu.

If you have a voltmeter check the voltage between TP1 and TP2, what do you get??

Yeah...tomorrow i'll get one of those toys

[kappaloot]

ok, i don't know f it's important, but i started the pi, same problem (even after i programmed the sd with ubuntu) i removed the sd and there was a beautiful rainbow. Still image. This brings me to think (as a noob) that it's just a sd problem. The problem now is what's the problem with the sd?

[Jim JKla]

Thereare some brand issues but the list of those that work is huge of course theres allways the posibility that you have an aprooved one thats broken.

[kappaloot]

Uhm i've another sd (btw it's a kingston 4GB microSD Class 4), i could try with that one, but also with an Adata sdhc 8gb class6 for eeepc i have the same problem.
Oh...and the psu i'm using is a Sony Ericsson 5V 0.7A Charger CST-80 that is in the list.

thank you for helping me

[Jim JKla]

All of my SD have been Sandisc everything from 2 to a micro32g all have worked.

[RaTTuS]

http://elinux.org/R-Pi_Troubleshooting# ... ash_screen

[kappaloot]

http://elinux.org/R-Pi_Troubleshooting# ... ash_screen

yeah but that's not the problem. I got the coloured splash screen only after i unplugged the sd when the rasp was on. Which is something quite normal as i see.
Normally (with everything plugged except for the usb devices) i have that weird thing i described in my first post.

[PaulCheffus]

http://elinux.org/R-Pi_Troubleshooting# ... ash_screen

yeah but that's not the problem. I got the coloured splash screen only after i unplugged the sd when the rasp was on. Which is something quite normal as i see.
Normally (with everything plugged except for the usb devices) i have that weird thing i described in my first post.

Hi

Try the bit above the comment about the splash screen in that link which reads

Green LED blinks in a specific pattern
With recent firmware, according to this forum post the green light will blink in a specific pattern to indicate some types of errors:

3 flashes: loader.bin not found
4 flashes: loader.bin not launched
5 flashes: start.elf not found
6 flashes: start.elf not launched

Cheers

Paul

[kappaloot]

ok, it looks like the problem was with the usb cable. It's strange, but now i-m typing from my raspberry.
So everything is fine, thank you guys for the help