Hi Folks,
As i promised, i will explain how to diagnose a broken Samsung U600 then how to replace necessary parts.
First of all you need to diagnose what's wrong with your phone, in my situation, my phone's touch key pads weren't working properly. It's lights were lid however there was no functionality at all. So i decided to fix it myself. I googled couple of websites and read same complaints about this problem. All inputs pointed that i need to change touch keypad.
To do that i had to disassemble my phone, and i need to do that with care. So i searched in youtube and found this http://www.youtube.com/watch?v=gpuJtkR7cYU . This is not that pro work but it gave me necessary knowledge to disassemble.
After disassemble my phone i look for spare part and i found front lid in Ebay. Front lid has touch pad keys so it would probably solve my problem when i replace with spare one.
Soldering could be a pain in the ass if you are not familiar with the equipments but i manage to solder my new lid to main board, after put everything back, i crossed my finger and yes it is working as should be.
Hey hey wait a second it's so easy, there should be a flaw and after 3 days, my touch keys failed again but this time there is another issue that when lid half open it work ok. It makes me think that maybe all the problem with the flex cable which is a data cable between LCD screen and main board.
I noticed that cable worn a little bit, you know opening and closing lid make this cable move, so i decided to order a flex cable after another solder work and place all the the part together and finally my phone back to normal. It works properly for a week.
If your Samsung U600's touch keys (the keys on the front lid) stop working, you should check first your flex cable and if you see a obvious worn, replace it. If it doesn't solve your issue, then change front lid (or touch key pads, but believe it's so tricky and you probably fail)
I hope you find it useful
Cheers
Typhoon Master
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