wallyllama
Posts: 1
Joined: Tue Jun 18, 2013 5:04 pm

Act LED blinks 8 times no video

Tue Jun 18, 2013 5:09 pm

The subject says it. I get 8 flashes of the ACT led, then a pause, then 8 more over and over. I have checked several times to make sure it is 8 and not 7. Any thoughts? I did have a power drop at my home and that may be related. I have tried a few different SD cards and tried re-writing them also. I can't find anything that talks about 8 flashes. Even searches on this board.

Lance
Posts: 2
Joined: Mon Jul 08, 2013 8:16 pm

Re: Act LED blinks 8 times no video

Mon Jul 08, 2013 8:20 pm

I got the same problem.
Is this SDCard error or power error?
How can I check this?

Lance
Posts: 2
Joined: Mon Jul 08, 2013 8:16 pm

Re: Act LED blinks 8 times no video

Tue Jul 09, 2013 9:25 am

PRi board info:
Board ver. : BS1233
Memory Chip: Samsung 222 K4P2G324ED-AGS1 GAD0238M
USB Chip: SMSC LAN9512-JZX B1226-A1817 8R1510698 CTI-TW
RG2 : 17-33 RTB31
RG1 : RXB 17-18
F1/F2 - Not installed, board with mount holes
green polyswitch (F3) on bottom side of board F1 and F2 don't exist
voltage between TP2 and F3 in/out: with sd-card only = 5.27v/5.24v

When i try to boot from SDCard with OpenELEC or Raspbian or NOOBS, ACT LED blinks 8 times then 1 sec pause , blinks 8 times then 1 sec pause and doi it again and again

I try to get error pattern (http://elinux.org/R-Pi_Troubleshooting# ... ic_pattern).
After kernel.bin was deleted, RPi started and got the same led blink pattern (blink 8 times and 1 sec pause)

When i try to boot from blank SDCard, i have dimmed ACT LED


What's wrong with RPi ?

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Davespice
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Re: Act LED blinks 8 times no video

Tue Jul 09, 2013 10:21 am

I'm not sure what could be wrong there. I would suggest to test the Pi with a multimeter as described here.
If you've been using Noobs I would also suggest to burn a Raw Image using either dd or Win32DiskImager.
One other thing you could try is to see if any of the earlier Raspbian images work;
http://downloads.raspberrypi.org/images/raspbian/
If one of their ealier images do work then it may be that there is a problem with the latest image.

devnull
Posts: 65
Joined: Sat Dec 24, 2011 7:46 am

Re: Act LED blinks 8 times no video

Wed Jul 24, 2013 10:56 am

I have the same problem with a Version B just received this morning from RS.

8 flashes, and I cannot find any reference to 8 flashes, only 7 flashes max.

I have tried both the raspian and arch repos, and re-flashed the new card (also just receive from RS) several times using dd.

I've done dozens of installs in the past, is this board defective ??

Thanks
> /dev/null 2>&1

ryaninja
Posts: 37
Joined: Wed Jul 24, 2013 4:22 pm

Re: Act LED blinks 8 times no video

Wed Jul 24, 2013 5:07 pm

also having this problem.
ive used several power supplies ( current one a blackberry micro usb into an iphone plug.) ive checked voltage across test points , reads above 5v. Ive removed all usb devices and ethernet cable, leaving only hdmi into my tv.
using a sandisk 4gb sdhc card, formatted with sdformatter and ive tried it loaded with raspbian and noobs but it wont boot. checked card is inserted fully etc etc.
im getting power light on and act blinking 8 times , pausing then blinking 8 times!

any help??

devnull
Posts: 65
Joined: Sat Dec 24, 2011 7:46 am

Re: Act LED blinks 8 times no video

Wed Jul 24, 2013 10:32 pm

Problem for me is I am away from my workstation and so this is a headless install.
I have a dozen Pis @ home and never seen this problem, however my other boards are model A.

I need to develop something on-site and this is a bit of a show-stopper !!
> /dev/null 2>&1

ryaninja
Posts: 37
Joined: Wed Jul 24, 2013 4:22 pm

Re: Act LED blinks 8 times no video

Thu Jul 25, 2013 6:36 am

ive now tried a better sd card, now a sandisk microsd card 8gb.
Ive tried previuos version of raspbian and retried noobs.
ive followed umpteen different troubleshooting guides and noting has worked so far.

Really dont know what to do now and im losing the faith.

The 8 blinks doesnt seem to be documented anywhere.and noone seems to have a solution or advice here

ryaninja
Posts: 37
Joined: Wed Jul 24, 2013 4:22 pm

Re: Act LED blinks 8 times no video

Thu Jul 25, 2013 8:26 am

So act light means ad card is reading , I've ruled out power supply by trying different one and ruled out sd card by using different ones and different os .
So it has to be hdmi cable and not an actual boot problem . It came from amazon so can't vouch for its quality . Ill try via composite tonight . Can I use a RCA to scart with only the yellow plugged in ? Will that be sufficient ?

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RaTTuS
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Re: Act LED blinks 8 times no video

Thu Jul 25, 2013 8:32 am

yes
How To ask Questions :- http://www.catb.org/esr/faqs/smart-questions.html
WARNING - some parts of this post may be erroneous YMMV

1QC43qbL5FySu2Pi51vGqKqxy3UiJgukSX
Covfefe

ryaninja
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Re: Act LED blinks 8 times no video

Thu Jul 25, 2013 11:50 am

Ok , anything to look out for when using composite video ??

drgeoff
Posts: 8486
Joined: Wed Jan 25, 2012 6:39 pm

Re: Act LED blinks 8 times no video

Thu Jul 25, 2013 11:55 am

ryaninja wrote:Ok , anything to look out for when using composite video ??
Just ensure that you boot with nothing connected to the RPi's HDMI output.

(To be honest, I'll be very surprised if composite works and HDMI does not, in this case. Even with nothing connected to HDMI or composite, a working RPi should not have a repeating 8 flash pattern.)

alexns
Posts: 3
Joined: Thu Jul 25, 2013 12:36 pm

Re: Act LED blinks 8 times no video

Thu Jul 25, 2013 12:48 pm

I am also having an identical problem to this.

I also received my Type B Pi from RS yesterday (24th July), have tried various versions of images and several different SD cards. All cards and images work in a friend's older Type B Pi.

Some combinations give the 8 flash sequence, whilst other combinations give a brief single flash of the green LED, and then nothing afterward.

Could this be a faulty batch of boards from RS?

rudenoise
Posts: 5
Joined: Thu Jul 25, 2013 12:16 pm

Re: Act LED blinks 8 times no video

Thu Jul 25, 2013 12:49 pm

Hi,

I've just received a Type B with the same problem.

I've checked my SD card (flashed with raspbian) on a friend's type B and there are no problems there, testing theirs in mine has the same problem. So I think I can rule out the SD card and image.

I've tried altering the config settings around HDMI but no change.

Could it be a hardware fault?

ryaninja
Posts: 37
Joined: Wed Jul 24, 2013 4:22 pm

Re: Act LED blinks 8 times no video

Thu Jul 25, 2013 1:02 pm

Seems there could be a faulty batch . Has anyone contacted rs ??
Ill fire off an email and see what they suggest .

ryaninja
Posts: 37
Joined: Wed Jul 24, 2013 4:22 pm

Re: Act LED blinks 8 times no video

Thu Jul 25, 2013 1:13 pm

Had a very speedy reply on this from rs it said

Good Afternoon Ryan,

We are sorry you are having problems with your Raspberry Pi please check the serial number on your Raspberry Pi board if it has a serial number starting with 0513 or higher please use the link below to download the latest version of Raspbian Wheezy.

http://www.raspberrypi.org/downloads

If however you still experience problems please fill out our returns form from link below and return your faulty goods to us, please email us a copy of your postal receipt we will then refund the postage. Once your returned item has been inspected we will issue a replacement or refund your order.

http://authenticate.rsdelivers.com/stat ... turns.aspx

Kind Regards,

Raspberry Pi Team



So ill try this and if no luck ill return for a replacement

picat
Posts: 7
Joined: Thu Jul 25, 2013 12:59 pm

Re: Act LED blinks 8 times no video

Thu Jul 25, 2013 1:18 pm

Hi,

I have the same problem - ACT LED blinks 8 times then 1 sec pause (etc) on 3 new RP B (ver 2) from RS.

I have an older B that's been running for 9 months with no downtime as a source control server etc. - but this image will not boot on the new RP.

I have tried the latest Raspbian and the older Raspbian images.

BUT the NOOBS did boot - except this is no use - as it will not re-size, removing the redundant images and reclaim the space.

Can one replace some of the boot files form the current Raspbian image with some of the noob Raspbian ones ? Or would that mess up ?

Which ones should I replace ? I'm willing to try this ...

Any ideas anyone ?

rudenoise
Posts: 5
Joined: Thu Jul 25, 2013 12:16 pm

Re: Act LED blinks 8 times no video

Thu Jul 25, 2013 1:50 pm

Without being able to interact with the device's console how do you get the serial number?

ryaninja
Posts: 37
Joined: Wed Jul 24, 2013 4:22 pm

Re: Act LED blinks 8 times no video

Thu Jul 25, 2013 2:00 pm

rudenoise wrote:Without being able to interact with the device's console how do you get the serial number?
I imagine the board has a seriel number written on it somewhere

rudenoise
Posts: 5
Joined: Thu Jul 25, 2013 12:16 pm

Re: Act LED blinks 8 times no video

Thu Jul 25, 2013 2:03 pm

I imagine the board has a serial number written on it somewhere
Just done some searching and can't find out where it would be, there is a white sticker underneath that could be it but doesn't seem similar to the one mentioned.
I suppose I'll just return it.

ryaninja
Posts: 37
Joined: Wed Jul 24, 2013 4:22 pm

Re: Act LED blinks 8 times no video

Thu Jul 25, 2013 2:11 pm

Yeh I think the email was jut saying make sure we have used the latest version of raspbian which I know I have so ill return for testing and get a replacement !!

jamesh
Raspberry Pi Engineer & Forum Moderator
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Re: Act LED blinks 8 times no video

Thu Jul 25, 2013 2:26 pm

Can you tell me what the markings are on the RAM chip - the one in the centre of the board? It's the make I'm after.
Principal Software Engineer at Raspberry Pi (Trading) Ltd.
Please direct all questions to the forum, I do not do support via PM.

ryaninja
Posts: 37
Joined: Wed Jul 24, 2013 4:22 pm

Re: Act LED blinks 8 times no video

Thu Jul 25, 2013 2:30 pm

I remember reading a previous post about Samsung and another type of chip . I believe mine is blank . Ill check once I'm home

jamesh
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Re: Act LED blinks 8 times no video

Thu Jul 25, 2013 2:37 pm

IF you can get the device to boot, then you can determine the serial number by typing.

cat /proc/cpuinfo

But, that doesn't really help much here i'm afraid.
Principal Software Engineer at Raspberry Pi (Trading) Ltd.
Please direct all questions to the forum, I do not do support via PM.

ryaninja
Posts: 37
Joined: Wed Jul 24, 2013 4:22 pm

Re: Act LED blinks 8 times no video

Thu Jul 25, 2013 2:52 pm

No it doesn't help right now . Ill still check the composite route and reflash my cards once more . Ill also find the make of chip - what difference would that make ?
Does anyone know what kind of error 8 blinks is ? It must mean something !

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