[Q] Xperia X10 Mini Pro nearly dead - Sony Ericsson XPERIA X10 Mini

Hi,
I have got a broken U20i which i want to repair, if possible.
Do not know anything about the history of the phone and what has caused the damage.
The led does not work, when it is started it comes a short vibration and afterwards for several seconds the backlight of the display.
The backlight returns every 20 seconds, and it seems that the accu is charged - that is all it does.
With SEUS and PC Companion updates are possible without any problems.
S1 Tool lists:
27.05.2013 16:46:31 RUNNING S1_EROM VER "R8A029"
27.05.2013 16:46:31 SOFTWARE AID: 0001
27.05.2013 16:46:31 LOADER AID: 0001
27.05.2013 16:46:33 FLASH ID: "002C/00BC"
27.05.2013 16:46:33 LOADER VERSION: "R4A045"
27.05.2013 16:46:33
27.05.2013 16:46:33 MODEL (from GDFS): U20i
27.05.2013 16:46:33 SOFTWARE VERSION: 1235-3411_2.1.1.A.0.28
27.05.2013 16:46:33 CUSTOM VERSION: 1245-6257_R9B
27.05.2013 16:46:33 FILESYSTEM VERSION: WORLD-1-8_2.1.1.A.0.28
27.05.2013 16:46:33 SERIAL NO: CB*******B
27.05.2013 16:46:33
27.05.2013 16:46:33 SEMC SIMLOCK CERTIFICATE
It was possible to unlock the bootloader and to flash the kernel with Flashtool and to set it back to fabricmode with SEUS.
After each procedure the phone does not start.
I tested the touchscreen and the display - both are working.
Is there anything to do exept jtag?

---

kadodo said:
Hi,
I have got a broken U20i which i want to repair, if possible.
Do not know anything about the history of the phone and what has caused the damage.
The led does not work, when it is started it comes a short vibration and afterwards for several seconds the backlight of the display.
The backlight returns every 20 seconds, and it seems that the accu is charged - that is all it does.
...
It was possible to unlock the bootloader and to flash the kernel with Flashtool and to set it back to fabricmode with SEUS.
After each procedure the phone does not start.
I tested the touchscreen and the display - both are working.
Is there anything to do exept jtag?
Click to expand...
Click to collapse
I don't think a jtag will do you any good since flashing kernels and firmware seems to work fine, and all a JTAG does is force the phone to accept factory firmware, something you have already done with seus.
The little vibration is the standard indicator that the phone is turning on and you can release the power-button, so that's normal too.
I guess there is a hardware fault somewhere. It may be something very simple like the flex that connects the screen to the rest of the phone (the motherboard and battery etc. is all underneath the keyboard on the u20) and it is the most common cause of failure on that phone. If you can see visible damage to that then that would be my first port of call.
But I can't guarantee that that will fix the problems the phone has. I wish you good luck with it though, I love these little phones and there's nothing else like it on the market.

---

Thanks for your answer.
The flexcable is broken.

---

Now I have changed the flexcable and the u20i nearly works fine.
During the repair I disabled the wlan-antenna.
Can anybody tell me (or even better show me) where I can find this antenna?