GP2X with broken LCD

[Todespreis]

Hey there! I have bought a GP2X with a not working Screen. I made a video out of it, just watch it on youtube, sorry again for the bad quality. I don't think, i can start a career as a youtuber XD
I would like to repair it, but i have no idea, where to search. My only suggestion would be to compare the voltages on different points of the PCB of that Device with a working one, but that would take like forever. If you have some Ideas, pleas share them! :-D
Oh, btw - here is the log file of the puTTY:



U-Boot 1.0.0 (Sep 10 2007 - 21:07:23)

U-Boot code: 03E00000 -> 03E49FA4 BSS: -> 03E82B70
IRQ Stack: 03ea3b6c
FIQ Stack: 03ea4b6c
DRAM Configuration:
Bank #0: 00100000 63 MB
Flash: 0 kB
NANDrobing at 0x9c000000
Flash chip found:
Manufacturer ID: 0xEC, Chip ID: 0x76 (Samsung K9F1208 64Mb)
1 flash chips found. Total nand_chip size: 64 MB
Get Environment from NAND offset 0x70000 ...
*** Warning - bad CRC, using default environment

In: serial
Out: serial
Err: serial

NAND read: device 0 offset 0x1a0000, size 0x40000 ... 262144 bytes read: OK

NAND read: device 0 offset 0x80000, size 0xb0000 ... 720896 bytes read: OK
### main_loop: bootcmd="bootm"
Hit any key to stop autoboot: 0
## Booting image at 01000000 ...
Image Name: GP2X Linux Kernel
Created: 2007-10-08 9:22:48 UTC
Image Type: ARM Linux Kernel Image (gzip compressed)
Data Size: 673304 Bytes = 657.5 kB
Load Address: 00008000
Entry Point: 00008000
Verifying Checksum ... OK
Uncompressing Kernel Image ... OK

Starting kernel ...

MMC/SD Card Detected
wait SD CARD 2.0
Partition check:
mmcsda: p1
Register SD: 29608MsB
mount...1
mount...2:
INIT: version 2.84 booting
<7>**>>ecc error unfixed on chunk 3268:0
Started device management daemon v1.3.25 for /dev
<7>**>>ecc error unfixed on chunk 3844:0
MSDOS FS: IO charset utf8
Touch driver open
Touch calibration
Apply LCD Timing
****nStatus : 2


read pointercal value
write pointercal value
****nStatus : 2


****nStatus : 2


****nStatus : 2


****nStatus : 2


it looks completely different from the log in file of the open2x software, so i think, there is a firmware installed.

 

[atari_afternoon]

GP2X Bricked

Hi, Whenever I try turning on my F100 it gets the rainbow screen. I tried different brands of rechargeable 2500 MAH and 2800 MAH batteries and I get the same screen. I tried using an ac adapter but it was center positive unfortunately due to my mistake. Do you guys think it's bricked or is...

pyra-handheld.com

Last year there was a discussion about "voltage regulator broken".
Maybe trying it out with non rechargeable 1.5 V batteries?
(I hope it is that easy...)

 

[TeDaDeS]

According to the wiki the voltage converter is:
F100 model (label U18): https://eu.mouser.com/ProductDetail/Analog-Devices/LTC3402EMSPBF?qs=hVkxg5c3xu9Z4DQMmelF3g==&srsltid=AfmBOorsuiWCm7FyzhPkuIhB7nRjuXXsGcVe2lDVYApe3sPyfJyMHzOg
F200 model (label U27): https://eu.mouser.com/ProductDetail/Analog-Devices/LTC3426ES6TRPBF?qs=hVkxg5c3xu8sKVKPA5j7tg==&srsltid=AfmBOorYttbjcPIOFPZQK5EXXxTuVmXpq3fv7DTevfAB56Wz-YGunOL2

I assume you can do a sanity check by measuring the input and output voltage of this part.