Sony Ericsson W850I is used, and only 3 months with a GUI

Users questions: My Sony Ericsson W850I is used, and only 3 months with a few days ago, which is covered with an instant reference colors, red and green, but the slide open, like, but today I took it apart, I thought it was cable loose to clean a bit, and then the assembly is good, but now more serious, and start to black and white, sometimes Huaping, But can listen to music, phone calls, is how the case? But now not boot, the boot is a screen flash, flash, press the construction of light does not shine, it will not boot, I had this open clearing, or a flash flash can not boot, how the case? I take it the repair shop, the boss took a row of wire-bound on the spot, or black and white He said that he repair such a machine, not a cable problem, he said that when he has had the screen to almost change the motherboard, and if there is adequate guidance is not possible to fix it, he said to 150 to get it. Did he want to lie it may be JS?
Experts answer: times as long as the LCD screen can also use the said Clearly not a bad hear you say wrong reason to know that not wash cable will solve the problem of what you use to wash oh, ah? To change it ~
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