I was pretty excited to have fixed my PW2 recently with help from posts in these forums and I really enjoyed the soldering challenge and getting into the kindle's serial console. So much so I bought a 'broken' PW1 to play with.
It is an EY21 model.
The symptoms are:
- screen looks fine, just a standard amazon screensaver on it
- no response from power button
- plug in power to wall, I get an orange light so I left it on the wall charger overnight, has made no difference.
- plug into PC via USB, I got "installing NS Blank Codex" one time, subsequent USB connections don't show this. I plugged it into a different PC and also got a one time message of "installing NS Blank Codex".
- Connected up a serial port, plug into wall charger (orange light), press power button and I get the following in the serial console:
Code:
U-Boot 2009.08-lab126 (Jan 08 2013 - 21:47:48)
CPU: Freescale i.MX50 family 1.1V at 800 MHz
mx50 pll1: 800MHz
mx50 pll2: 400MHz
mx50 pll3: 216MHz
ipg clock : 66666666Hz
ipg per clock : 66666666Hz
uart clock : 24000000Hz
ahb clock : 133333333Hz
axi_a clock : 400000000Hz
axi_b clock : 200000000Hz
weim_clock : 100000000Hz
ddr clock : 800000000Hz
esdhc1 clock : 80000000Hz
esdhc2 clock : 80000000Hz
esdhc3 clock : 80000000Hz
esdhc4 clock : 80000000Hz
MMC: FSL_ESDHC: 0, FSL_ESDHC: 1
Board: Unknown
Boot Reason: [POR]
Boot Device: MMC
Board Id:
S/N:
Invalid board id! Can't determine system type for RAM init.. bailing!
DRAM: 0 kB
Using default environment
I don't know the history of the device, it doesn't look like it's had a serial port on it before but it does look like some scratches and fingerprints on the metal parts under the case.
Any ideas what I could do next? I'm happy to read up and experiment, that's why I bought it so I can learn
just not sure what my step should be....?
P.S. I mostly work on windows but i do have a raspberry pi as well if I need to do stuff under linux.