If you suspect your PandaBoard / PandaBoard ES has a hardware issue. You can use the following validation environment to run a set of testcases on the board. These tests must be run before you submit a RMA form also.

Download the validation environment, install and boot it on your working SD card using below instructions:

1. Write the downloaded validation environment (validation.img file) to your SD card by following below instructions:

On Windows machine:

use Win32DiskImager application to write the validation.img.

Mkae sure you have correctly mapped drive for the SD Card.

On Linux:

Place the SD card at your host computer.
Make sure the SD card is not mounted (just umount it if needed)
Identify the correct raw device name (like /dev/sde - not /dev/sde1)
Run the following command to write it:
       sudo sh -c 'cat ./validation.img | dd bs=4M of=/dev/sde ; sync'
Warning: Some people have reported issues with this method. If this doesn't work, try the following commands:

       sudo dd bs=4M if=validation.img of=/dev/sde
        sync

2. Now boot the board with the sdcard and it should display output from the serial port.

3. Once at the linux prompt cd to "bin" directory and run the panda-test.sh.

NOTES:

• You will need to connect a set of speakers/headphones and a USB thumb drive to your PandaBoard before booting the board.
• Depending on your display you may or may not hear the HDMI audio test.
• All testcases (except WLAN) are automatically run and results displayed on serial console.
• You need to manually run the WLAN testcase (see video below on how to do it)

You can review the video and compare your results.

1. Framebuffer
2. Display
3. Audio Out
4. HDMI Audio
5. LED1&2
6. USB Thumb Drive RW test
7. EHCI
8. LAN9514
9. WLAN (802.11 b/g/n)