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1  Hardware and U-Boot firmware / Hardware / Re: Replaced power supply, booted, now brick with no lights...? on: August 15, 2010, 09:44:27 AM
All the switched-mode supplies I've bought recently run on 100-240V 50/60hz, so you'd be fine (but would need a suitable pin-adaptor for US-running.

Found one as you described, which would work on 120Hz... switched regulated power supply rated up to 3A... still dead.  I think this one may have given it up; I don't know anything else to try.
2  Hardware and U-Boot firmware / Hardware / Re: Replaced power supply, booted, now brick with no lights...? on: July 31, 2010, 09:09:25 AM
Again, open circuit voltage tells you almost nothing. Put a load on it and then test the voltage again, I bet it's way below 5V.

How much of a load can I put on it aside from "connect it to the plug computer board it was running on before"?  It's connected to the same board I was looking at, and I can't ask it to do anything more stressful than booting up because it's not even doing that.

Quote
As for the battery, I've seen lithium coin cells leak from time to time. It just happens from age or manufacturing defect and probably isn't related to your power issues (unless the leakage has corroded some of the traces or components that supply power to the rest of the board).

Well, at any rate I cleaned everything and replaced the battery, but no luck.  This may just go back in storage until I can replace the power supply properly.
3  Hardware and U-Boot firmware / Hardware / Re: Replaced power supply, booted, now brick with no lights...? on: July 31, 2010, 06:11:58 AM
Followup: this cleaned up pretty well, but doesn't do anything (at least with an underpowered power supply and no battery--which may not exactly be a shock).  I'll replace the batt and see if it improves, but the new power supply may wait until I'm back in the states; no sense buying a 240v power supply when I can't use it in two months.  I'd like to see at least the same signs of life I saw a bit ago, though.
4  Hardware and U-Boot firmware / Hardware / Re: Replaced power supply, booted, now brick with no lights...? on: July 31, 2010, 05:00:30 AM
Good point--I looked at the specs and it was only promising 1.2A at 5V.  So that could be a problem, although as mentioned it booted up and ran fine for a few minutes using that power supply, so for it to now do absolutely nothing just seems weird. I tested with it connected, and the measured voltage on the bottom of the PCB (the "other side" of the power connector) showed 5.2V between the red/black contacts.

Another problem, though, might be related to this...



I'm not quite sure I understand what happened there, or whether this was new after rewiring the power supply or not (I would guess it happened in storage).  It certainly surprised me to see it, and I'm not entirely sure what to do about it.  Is this the sort of thing that can be cleaned up?  Not sure if that would cause the brick-ness I'm seeing, but worth a try.  I may have to unsolder the battery cage to get to it easily, though, grump grump.
5  Hardware and U-Boot firmware / Hardware / Replaced power supply, booted, now brick with no lights...? on: July 30, 2010, 03:29:23 AM
Quick question:

May be a lost cause, but I had a Sheevaplug with a blown power supply.  As with other folks, I hacked off the connector, swapped in a 5v power supply, and booted.  Success!  I was able to ssh in, play around, etc...

...for about 10 minutes.  And then it died; SERIOUSLY died.  Now I don't even get any LEDs.  I did notice a little grit around the backup battery.  Too late, I checked the power supply output with a multimeter and it was 5.2v, not a pure 5v.  Not sure how sensitive the components are.

So... anything to do but go through its pockets looking for loose change?
6  Hardware and U-Boot firmware / Hardware / Re: Another Sheevabrick? on: September 05, 2009, 02:26:43 PM
Just received my replacement... good after 1 day so far, but not holding my breath or putting anything critical on it just yet!  We'll see; I'm pleased with the replacement response. 
7  Hardware and U-Boot firmware / Hardware / Re: Another Sheevabrick? on: August 30, 2009, 06:36:27 AM
If I had been doing anything interesting such as replacing the OS, reflashing, anything, that would be one thing... maybe I didn't explain enough.

It's not that I did something and when I went to reboot, it wouldn't reboot.  It's that I kept the stock OS, left it running overnight, and in the morning it was a brick.  The ONLY thing I did to "modify" it is change the root password and run apt-get to install some packages.  This doesn't sound like a software problem--I don't get ANY leds.

When I mentioned this to Globalscale, they promised to send a replacement unit, but I haven't heard anything since.  I've prodded them with an email, but not much response.  If this continues maybe I'll go back to my beagleboard-as-server idea after all.
8  Hardware and U-Boot firmware / Hardware / Another Sheevabrick? on: August 08, 2009, 02:21:09 AM
Just curious (and to log)... got my plug Thursday, plugged it in, got my ssh prompt, upgraded OS according to the wiki, installed a few apps, screwed up the dhcp.  Used my laptop to access via USB/com, which worked great, and it was back up and running all Friday.

Woke up Saturday... no access via ssh.  Tried USB/com (laptop was still connected) and it acknowledged connection but couldn't transmit.  Blue LED was not illuminated.

And then... I tried rebooting the device by unplugging/replugging... and it is completely silent now.  Replugging will not illuminate any LEDs.  Tried resetting with the switch on the side to no avail.  Tried using the power cord on my Eeepc and the cord works fine, but I can't get the plug to do anything.  Seems a bit like the problem in this thread: http://plugcomputer.org/plugforum/index.php?topic=72.0.

Are there known problems in build quality with the Sheevaplug?  I know it's a devkit, but it's a fairly mature product by now I would think.  I've contacted Globalscale to get further advice/replacement, but this was pretty discouraging to have it go from brilliant to brick within two days of owning it.
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