Ethernet port turned off after few minutes

I am using 5V 1300mA adapter (http://www.skross.com/product/en/15/USB-Charger/56/World-USB-Charger.html) to power my Pi and another cheaper adapter that gives 5V 800mA.

The SD card is KINGSTON 16GB 100X SD10-HC.

I plugged in my Ethernet cable into the port and booted off Debian image from http://downloads.raspberrypi.org/images/debian/6/debian6-19-04-2012/debian6-19-04-2012.zip (SSH enabled). I am able to SSH into the Pi remotely and run basic commands, top, ps, ping. After about 15 minutes, the Ethernet LEDs just went off and my SSH session is gone too.

Checking the voltage at TP1 with my DMM it reads between 4.75 to 4.8V when the Ethernet is up and 4.9V when the Ethernet is down, i.e. the 3 LEDs marked FDX, LNK and 10M are off.

The same symptom is happening with both adapters. I have nothing else plugged into the Pi except the power and Ethernet cable.

Could this be another power problem? Anyone else seeing similar issue?

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xchris over 13 years ago

very strange! Is it from the 1st batch? Maybe this has something to do with the re-soldering process of the eth port....
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Former Member over 13 years ago in reply to xchris

How do I tell if it's first batch? I ordered a couple hours after launch on Feb/29 from element14 and received it May/7.
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bodgy over 13 years ago in reply to Former Member

Look at the serial number it is in date time format.

Off hand I can't recall my serial number (I'm at work at the moment), but there is a post by me here under Pi in Oz that lists my serial number and mine was in the second batch.

OK at home now, as Coder27 says my ethernet jack isLU1S041ALF and the serial code is 2012-03-17 14:19
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Former Member over 13 years ago in reply to Former Member

Raspberry PiB,
It sounds to me like a hardware problem, so I'd suggest contacting Farnell for a replacement.
They have reportedly been very good about promptly replacing faulty units.

Since you received yours on May 7, it would be from the second batch, so there is
no reason to suspect it has a resoldered ethernet port. The first batch was sent out
around April 13, and the second batch around May 1.

You can confirm it's from the second batch by looking for a CE mark sticker on the back.
The first batch doesn't have that. As bodgy noted, you can also check the manufacturing
date encoded in the serial number on the back side.

Also, the first batch has an ethernet jack made by Bothand, that says LU1S041A LF;
in the second batch it's made by HanRun, and says HR901110A.
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Former Member over 13 years ago in reply to Former Member

Also, on the front side of the board, between the power connector and the SD card,
the manufacturing date is apparently encoded, as 1208 for first batch, and 1213 for
the second, indicating week 08 and week 13 of 2012, respectively.

http://www.raspberrypi.org/phpBB3/viewtopic.php?f=2&t=5889
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Former Member over 13 years ago in reply to Former Member

Also, on the front side of the board, between the power connector and the SD card,
the manufacturing date is apparently encoded, as 1208 for first batch, and 1213 for
the second, indicating week 08 and week 13 of 2012, respectively.

http://www.raspberrypi.org/phpBB3/viewtopic.php?f=2&t=5889
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