<div class="gmail_quote">On Tue, Nov 30, 2010 at 2:11 AM, John Watlington <span dir="ltr"><<a href="mailto:wad@laptop.org" target="_blank">wad@laptop.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
The symptoms you describe (power light and Mic light coming on, but nothing else)<br>
indicates that the main processor isn't executing any code. This is usually caused<br>
by one of two problems: corruption of the SPI ROM containing the boot loader or<br>
a cracked solder ball underneath the processor. I doubt it is the former, as once it<br>
died it wouldn't restart.<br>
<br>
You can test for the latter by pressing down on the processor (biggest chip on the<br>
board) and seeing if it improves the situation. Unfortunately, it is impossible to fix<br>
this in the field. It requires reflowing the board again.<br>
<br></blockquote><div><br></div><div>Not exactly, although the fix isn't 100%, he can try to heat it up with a heat gun at some electronics repair shop. It worked with Xbox 360s, which are plagged by the same issue, even though it sometimes isn't a definitive fix.</div>
<div>Then again, can you even successively reflow it with the epoxy around the chip?</div>
<div>Out of curiosity though, is this a problem that plagues more XOs or has the solder's chemistry been worked out?</div><div><br></div><div>Best regards,</div><div>Tiago</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Bummer,<br>
wad<br>
<div><div></div><div><br>
On Nov 29, 2010, at 9:00 PM, Snow Wolf wrote:<br>
<br>
> So of late, I've been wondering if my XO is approaching total failure. Help me judge, based on these symptoms::<br>
> When opening and booting the laptop, the power light and light in top left will come on... nothing else. Child boy needed to get it working.<br>
> Occasionally opening the lid the same state as before will occur.<br>
> Recentaly, a black screen freeze occured during startup.<br>
><br>
> So I'm fairly sure it's an origianl XO-1, but ive upraded it to 802 along the way. What must I do to get it working well again?<br>
><br>
</div></div>> _______________________________________________<br>
> Devel mailing list<br>
> <a href="mailto:Devel@lists.laptop.org" target="_blank">Devel@lists.laptop.org</a><br>
> <a href="http://lists.laptop.org/listinfo/devel" target="_blank">http://lists.laptop.org/listinfo/devel</a><br>
<br>
_______________________________________________<br>
Devel mailing list<br>
<a href="mailto:Devel@lists.laptop.org" target="_blank">Devel@lists.laptop.org</a><br>
<a href="http://lists.laptop.org/listinfo/devel" target="_blank">http://lists.laptop.org/listinfo/devel</a><br>
</blockquote></div><br>