手機開不了機的原因

1、開機線不(bu)正常引起的不(bu)開機

正常情況下，按下手機開機(ji)(ji)鍵時，開機(ji)(ji)鍵的觸發(fa)端(duan)電壓應有(you)明顯變化，若(ruo)無變化，一般(ban)是(shi)開機(ji)(ji)鍵接觸不良或者是(shi)開機(ji)(ji)線(xian)斷線(xian)、元件(jian)虛焊、損壞。維修時，用(yong)外(wai)接電源供電，觀察電流表的變化，如(ru)果電流表無反應，一般(ban)是(shi)開機(ji)(ji)線(xian)斷線(xian)或開機(ji)(ji)鍵不良。

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2、電(dian)(dian)池供電(dian)(dian)電(dian)(dian)路不良引起的(de)不開機

對于大部分(fen)手(shou)機(ji)(ji)，手(shou)機(ji)(ji)加上(shang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池或外(wai)接(jie)(jie)(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)后，供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓直接(jie)(jie)(jie)加到(dao)(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)工C上(shang)，如(ru)果(guo)供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓未加到(dao)(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)IC上(shang)，手(shou)機(ji)(ji)就(jiu)不(bu)(bu)(bu)可(ke)能開(kai)(kai)機(ji)(ji)。對于摩托羅(luo)拉系列的手(shou)機(ji)(ji)(摩托羅(luo)拉T2688除外(wai))，供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)有所不(bu)(bu)(bu)同(tong)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)和外(wai)接(jie)(jie)(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)要經過(guo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)開(kai)(kai)關(guan)轉換再加到(dao)(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)IC上(shang)。也就(jiu)是(shi)說(shuo)，手(shou)機(ji)(ji)的供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)有兩(liang)條路(lu)徑(jing)，一路(lu)是(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian);另一路(lu)是(shi)外(wai)部接(jie)(jie)(jie)口供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(帶機(ji)(ji)充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)座供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)時)。當(dang)兩(liang)路(lu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)同(tong)時供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)時，外(wai)部接(jie)(jie)(jie)口供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)優先。而(er)這兩(liang)路(lu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)的切(qie)換是(shi)由電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)開(kai)(kai)關(guan)管來(lai)控制(zhi)，主要達到(dao)(dao)(dao)對整機(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流起到(dao)(dao)(dao)保護作用(yong)，防止因短路(lu)或者漏電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)對手(shou)機(ji)(ji)內(nei)部的集成(cheng)(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)造(zao)成(cheng)(cheng)損壞。但是(shi)，如(ru)果(guo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)開(kai)(kai)關(guan)損壞，中源(yuan)模塊(kuai)就(jiu)有可(ke)能得不(bu)(bu)(bu)到(dao)(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池的供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓引起手(shou)機(ji)(ji)不(bu)(bu)(bu)開(kai)(kai)機(ji)(ji)。對于這種由電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)開(kai)(kai)關(guan)供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的手(shou)機(ji)(ji)，由于既可(ke)以(yi)用(yong)外(wai)接(jie)(jie)(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)接(jie)(jie)(jie)口供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，也可(ke)以(yi)通過(guo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池觸(chu)片(pian)用(yong)外(wai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)加以(yi)供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)。維修時可(ke)通過(guo)不(bu)(bu)(bu)同(tong)的供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)方式進行(xing)供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，以(yi)便區分(fen)故障范(fan)圍和確定電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)開(kai)(kai)關(guan)是(shi)否正常。一般(ban)來(lai)說(shuo)，如(ru)果(guo)供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)不(bu)(bu)(bu)良，按開(kai)(kai)機(ji)(ji)鍵電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流表會(hui)無(wu)反應，這和開(kai)(kai)機(ji)(ji)線不(bu)(bu)(bu)良十(shi)分(fen)相似。

3、電源IC不正常引起的不開(kai)

手機要正(zheng)常工作(zuo)(zuo)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)要輸出正(zheng)常的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓供(gong)給負(fu)載電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)。在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中(zhong)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)IC是其(qi)核心電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)，不(bu)(bu)(bu)同品種及型(xing)號的(de)手(shou)(shou)(shou)機，供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)方式亦有(you)所不(bu)(bu)(bu)同，有(you)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)的(de)供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)由(you)幾塊穩(wen)壓管供(gong)給，如(ru)愛立信早(zao)期(qi)系(xi)列(lie)(T18之(zhi)前)手(shou)(shou)(shou)機、部分三星系(xi)列(lie)手(shou)(shou)(shou)機等(deng)。有(you)的(de)卻有(you)一塊電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)模塊直接供(gong)給，如(ru)摩托羅(luo)拉系(xi)列(lie)手(shou)(shou)(shou)機、諾(nuo)基亞系(xi)列(lie)手(shou)(shou)(shou)機等(deng)。但不(bu)(bu)(bu)管怎樣，如(ru)果電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)IC不(bu)(bu)(bu)能正(zheng)常工作(zuo)(zuo)，就(jiu)有(you)可(ke)能造成手(shou)(shou)(shou)機不(bu)(bu)(bu)開機。對(dui)于電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)IC，重點(dian)(dian)是檢查其(qi)輸出的(de)邏輯(ji)供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓、13MHz時鐘供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓，在(zai)按開機鍵的(de)過程中(zhong)應能測到(dao)(不(bu)(bu)(bu)一定維持住)，若測不(bu)(bu)(bu)到(dao)，在(zai)開機鍵、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)正(zheng)常的(de)情況下，說(shuo)明(ming)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)IC虛焊、損(sun)壞。目前，越(yue)來越(yue)多的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)IC采用了BGA封裝，給測量和維修帶來了很大(da)的(de)負(fu)擔(dan)，測量時可(ke)對(dui)照電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)原理圖(tu)在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)IC的(de)外圍電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)的(de)測試點(dian)(dian)上進行測試。若判斷電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)IC虛焊或損(sun)壞，需重新植錫、代換，這需要較高的(de)操作(zuo)(zuo)技巧，需在(zai)實踐中(zhong)加以磨(mo)練。

4、系統對鐘和復位不正常引(yin)起的不開(kai)機

系統時鐘是CPU正常工作的條件之一，手機的(de)系統時(shi)(shi)(shi)(shi)(shi)鐘(zhong)(zhong)一(yi)般(ban)采用(yong)13MHz，13MHz時(shi)(shi)(shi)(shi)(shi)鐘(zhong)(zhong)不(bu)(bu)正(zheng)(zheng)(zheng)常，邏(luo)輯電(dian)(dian)(dian)(dian)(dian)路(lu)不(bu)(bu)工作(zuo)，手(shou)機不(bu)(bu)可(ke)(ke)(ke)能(neng)開機。13MHz時(shi)(shi)(shi)(shi)(shi)鐘(zhong)(zhong)信(xin)號(hao)(hao)(hao)應(ying)(ying)能(neng)達到一(yi)定(ding)的(de)幅度并(bing)穩定(ding)。用(yong)示波(bo)(bo)器測(ce)(ce)13MHz時(shi)(shi)(shi)(shi)(shi)鐘(zhong)(zhong)輸(shu)出(chu)端上(shang)(shang)的(de)波(bo)(bo)形，如果無波(bo)(bo)形則檢(jian)測(ce)(ce)13MHz時(shi)(shi)(shi)(shi)(shi)鐘(zhong)(zhong)振(zhen)蕩電(dian)(dian)(dian)(dian)(dian)路(lu)的(de)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(對于(yu)13MHzVCO，供(gong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)加到13MHzVCO的(de)一(yi)個(ge)(ge)腳(jiao)亡(wang)，對于(yu)13MHz晶(jing)(jing)(jing)振(zhen)組(zu)成(cheng)的(de)振(zhen)蕩電(dian)(dian)(dian)(dian)(dian)路(lu)，這個(ge)(ge)供(gong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)一(yi)般(ban)供(gong)給(gei)中(zhong)頻(pin)(pin)IC)，若有(you)(you)正(zheng)(zheng)(zheng)常電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)則為13MHz時(shi)(shi)(shi)(shi)(shi)鐘(zhong)(zhong)晶(jing)(jing)(jing)體(ti)、中(zhong)頻(pin)(pin)IC或(huo)13MHzVCO壞。注(zhu)意(yi)，有(you)(you)的(de)示波(bo)(bo)器在(zai)(zai)晶(jing)(jing)(jing)體(ti)上(shang)(shang)測(ce)(ce)可(ke)(ke)(ke)能(neng)會使晶(jing)(jing)(jing)體(ti)停振(zhen)，此時(shi)(shi)(shi)(shi)(shi)，可(ke)(ke)(ke)在(zai)(zai)探頭上(shang)(shang)串接一(yi)個(ge)(ge)幾十皮法以(yi)下的(de)電(dian)(dian)(dian)(dian)(dian)容。有(you)(you)條件(jian)的(de)話(hua)，最好(hao)使用(yong)代換法進行(xing)維修，以(yi)節約時(shi)(shi)(shi)(shi)(shi)間，提高效(xiao)率。13MHz時(shi)(shi)(shi)(shi)(shi)鐘(zhong)(zhong)電(dian)(dian)(dian)(dian)(dian)路(lu)起振(zhen)后，應(ying)(ying)確保13MHz時(shi)(shi)(shi)(shi)(shi)鐘(zhong)(zhong)信(xin)號(hao)(hao)(hao)能(neng)通過電(dian)(dian)(dian)(dian)(dian)阻、電(dian)(dian)(dian)(dian)(dian)容及(ji)放大電(dian)(dian)(dian)(dian)(dian)路(lu)輸(shu)人到CPU引(yin)腳(jiao)上(shang)(shang)，測(ce)(ce)試CPU時(shi)(shi)(shi)(shi)(shi)鐘(zhong)(zhong)輸(shu)入腳(jiao)，如沒有(you)(you)，應(ying)(ying)檢(jian)查線路(lu)中(zhong)電(dian)(dian)(dian)(dian)(dian)阻、電(dian)(dian)(dian)(dian)(dian)容、放大電(dian)(dian)(dian)(dian)(dian)路(lu)是(shi)(shi)否(fou)虛焊(han)或(huo)無供(gong)電(dian)(dian)(dian)(dian)(dian)及(ji)損壞。另外，有(you)(you)些(xie)手(shou)機的(de)時(shi)(shi)(shi)(shi)(shi)鐘(zhong)(zhong)晶(jing)(jing)(jing)體(ti)或(huo)時(shi)(shi)(shi)(shi)(shi)鐘(zhong)(zhong)VCO是(shi)(shi)26MHz(如摩托羅拉V998、諾基(ji)3310手(shou)機)或(huo)19.5MHz(如三(san)星A188手(shou)機)，產(chan)生的(de)振(zhen)蕩頻(pin)(pin)率要(yao)經過中(zhong)頻(pin)(pin)IC分頻(pin)(pin)為13MHz后才供(gong)給(gei)CPU。復(fu)(fu)位(wei)信(xin)號(hao)(hao)(hao)也是(shi)(shi)CPU工作(zuo)工作(zuo)條件(jian)之一(yi)，符號(hao)(hao)(hao)是(shi)(shi)RESET，簡(jian)寫RST，諾基(ji)亞乎機中(zhong)用(yong)PURX表示。復(fu)(fu)位(wei)一(yi)般(ban)直接由(you)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)IC通往CPU，或(huo)使用(yong)一(yi)專用(yong)復(fu)(fu)位(wei)小集(ji)成(cheng)電(dian)(dian)(dian)(dian)(dian)路(lu)。復(fu)(fu)位(wei)在(zai)(zai)開機瞬間存在(zai)(zai)，開機后測(ce)(ce)量(liang)時(shi)(shi)(shi)(shi)(shi)己為高電(dian)(dian)(dian)(dian)(dian)平。如果需要(yao)測(ce)(ce)量(liang)正(zheng)(zheng)(zheng)確的(de)復(fu)(fu)位(wei)時(shi)(shi)(shi)(shi)(shi)間波(bo)(bo)形，應(ying)(ying)使用(yong)雙蹤示波(bo)(bo)器，一(yi)路(lu)測(ce)(ce)CPU電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)，一(yi)路(lu)測(ce)(ce)復(fu)(fu)位(wei)。維修中(zhong)發現，因復(fu)(fu)位(wei)電(dian)(dian)(dian)(dian)(dian)路(lu)不(bu)(bu)正(zheng)(zheng)(zheng)常引(yin)起的(de)手(shou)機不(bu)(bu)開機并(bing)不(bu)(bu)多見。

5、邏(luo)輯電路不正常引起(qi)的不開機

邏輯電路重點檢測CPU對各存儲器的片選信號CE和許可信號OE，這些信號很重要，但關鍵是必須會尋找這些信號，由于越來越多的手機邏輯電路采用了BGA封裝的集成電路，給查找這些信號帶來了很大的困難。有條件的話最好對照圖紙來查找這些信號及其測量點。片選信號是一些上下跳變的脈沖信號，如果各存儲器CE都沒有，說明CPU沒有工作，補焊、重焊、代換CPU或再仔細檢查CPU作的條件是否具備。如果某個存儲器的片選信號沒有，多為該存儲器損壞。如果CE信號都有，說明CPU-F.作正常，故障可能是軟件故障或總線故障以及某個存儲器損壞。手機在使用中(zhong)經(jing)常會引起機(ji)板(ban)變形，如按按鍵、摔、碰(peng)等外力原因會引起某些芯(xin)片脫焊，一般補焊或重(zhong)焊這(zhe)些芯(xin)片會解決(jue)大部分問題。當重(zhong)焊或代(dai)換正常的芯(xin)片還不(bu)能(neng)開機(ji)，并且使用免拆機(ji)維修儀(yi)讀(du)寫也不(bu)能(neng)通過時，應逐(zhu)個測(ce)量外圍電路和代(dai)換這(zhe)些芯(xin)片。

6、軟件(jian)不正(zheng)常引起的不開機

手機在開機過(guo)(guo)程中，若(ruo)軟件(jian)通(tong)不過(guo)(guo)就會(hui)不開機，軟件(jian)出錯主(zhu)要(yao)是(shi)存儲(chu)器(qi)資料(liao)不正(zheng)常(chang)，當線路沒有明顯斷線時(shi)，可(ke)以先代(dai)換正(zheng)常(chang)的碼(ma)片(pian)、版本或重寫軟件(jian)，有的芯片(pian)內電路會(hui)損壞(huai)，重寫時(shi)則不能通(tong)過(guo)(guo)。重寫軟件(jian)時(shi)應(ying)將原來資料(liao)保存，以備應(ying)急修(xiu)復。

7、其它原因引起的(de)不開機

手機(ji)不(bu)(bu)(bu)(bu)開機(ji)故障(zhang)的原(yuan)因還有(you)很多，如液(ye)晶顯(xian)示屏不(bu)(bu)(bu)(bu)良、元件(特別是功(gong)放)短路等(deng)都有(you)可(ke)能引(yin)起手機(ji)不(bu)(bu)(bu)(bu)開機(ji)，還有(you)一些機(ji)型必須(xu)用到32.768kHz的實(shi)時(shi)時(shi)鐘(zhong)(zhong)(zhong)作(zuo)為(wei)碼(ma)片(pian)時(shi)鐘(zhong)(zhong)(zhong)信號和睡眠時(shi)鐘(zhong)(zhong)(zhong)信號。若32.768kHz實(shi)時(shi)時(shi)鐘(zhong)(zhong)(zhong)不(bu)(bu)(bu)(bu)正常(chang)，也可(ke)能造成手機(ji)不(bu)(bu)(bu)(bu)開機(ji)。引(yin)起32.768kHz時(shi)鐘(zhong)(zhong)(zhong)不(bu)(bu)(bu)(bu)正常(chang)的因素主要(yao)有(you)時(shi)鐘(zhong)(zhong)(zhong)備用電池短路、32.768kHz時(shi)鐘(zhong)(zhong)(zhong)壞等(deng)。所以(yi)，在維修手機(ji)不(bu)(bu)(bu)(bu)開機(ji)時(shi)要(yao)結合具體電路具體分(fen)析，只(zhi)要(yao)對手機(ji)的原(yuan)理理解正確，思路清(qing)楚，不(bu)(bu)(bu)(bu)開機(ji)故障(zhang)一般都可(ke)以(yi)排(pai)除(chu)。

手機開不了機如何解決

第一(yi)(yi)步：檢查(cha)電池是否有電，電池沒(mei)電了，手機自(zi)然沒(mei)有動力去開機，如果怎(zen)么沖它都不(bu)會啟動的話可以(yi)檢查(cha)一(yi)(yi)下(xia)充(chong)電器是否工作，接口是否損壞，用萬能充(chong)充(chong)電或檢測電量。

第二步：檢查電池(chi)是否損(sun)壞或者壽命已到，電池(chi)是消(xiao)耗品，如果(guo)(guo)損(sun)壞或者使(shi)用不當導致電池(chi)過早損(sun)壞，可(ke)以(yi)嘗試換一塊電池(chi)，看一看是否可(ke)以(yi)啟動，如果(guo)(guo)問(wen)題解決，就需(xu)要更換電池(chi)。

第三步：進水或(huo)刷(shua)機造(zao)成(cheng)(cheng)人為性損(sun)壞，這種問題就是自身的原因了，進水的話用吹風機吹一吹，拆機烘烤(kao)試(shi)一試(shi)，如(ru)果摔(shuai)壞了，內部(bu)零件損(sun)毀，就需要(yao)找維修中心維修了。如(ru)果刷(shua)機造(zao)成(cheng)(cheng)無法開機，可以重新刷(shua)機嘗試(shi)恢復。

第(di)四步：如果基本的(de)(de)(de)方法都嘗試(shi)過了，還(huan)是(shi)無效的(de)(de)(de)話，就只能(neng)去找專業的(de)(de)(de)維修(xiu)中心來進行維修(xiu)，一(yi)般無法開機(ji)的(de)(de)(de)故障自己(ji)不好解(jie)決(jue)，也(ye)可以試(shi)試(shi)搜索，看看有沒有適(shi)合你的(de)(de)(de)解(jie)決(jue)辦(ban)法。

手機開不了機怎么刷機

這里介(jie)紹最簡單的刷機(ji)方式：一種(zhong)是(shi)(shi)使(shi)用軟件下載ROM一鍵(jian)在(zai)線刷機(ji)！另外一種(zhong)是(shi)(shi)把ROM復制(zhi)到SD卡里面然后進(jin)入recovery模式進(jin)行刷機(ji)！

1、用軟件一鍵在線刷機：

步驟(zou)一、這個(ge)需要安裝(zhuang)一款(kuan)刷機軟(ruan)件(jian)，這個(ge)軟(ruan)件(jian)用的人也(ye)非常的多(duo)，還有一件(jian)ROOT的功能，刷機也(ye)需要ROOT。我們百度搜索“卓大師(shi)”，然后點擊(ji)下載安裝(zhuang)。

步驟二、然后我(wo)們在進(jin)入自(zi)己的手機，點擊設(she)置(zhi)，然后點擊開(kai)發人員選項。把(ba)USB調(diao)試打開(kai)。不同安卓版(ban)本的手機打開(kai)的位(wei)置(zhi)也不一樣。自(zi)己在設(she)置(zhi)里面找找就能看(kan)到。

步驟三、然后(hou)把手機(ji)用數(shu)據線連(lian)接(jie)好電腦，然后(hou)在打(da)開安裝好的(de)卓(zhuo)大(da)師，卓(zhuo)大(da)師連(lian)接(jie)手機(ji)成功之后(hou)點擊(ji)ROM專(zhuan)區。這(zhe)里面會有(you)很(hen)多手機(ji)的(de)刷(shua)機(ji)包。找一個適合自己機(ji)型(xing)的(de)刷(shua)機(ji)包下載。

步(bu)驟四、然(ran)后在按照上圖的(de)指示(shi)，點擊(ji)下面的(de)下載狀態，打開之后就會(hui)看到ROM下載的(de)位(wei)置。

步(bu)驟五、然后把你下(xia)載的ROM的壓縮文件復(fu)制(zhi)出來。這個文件也可以直接(jie)復(fu)制(zhi)到SD卡(ka)里(li)面(mian)進(jin)入recovery模式進(jin)行刷(shua)機，下(xia)載刷(shua)機包(bao)是最重要的。而且刷(shua)機包(bao)呀下(xia)載適(shi)合自己(ji)機型(xing)的，不然很容(rong)易變磚(zhuan)。

步(bu)驟(zou)六、下(xia)載完之后會(hui)出現(xian)刷機(ji)的按(an)鈕，或者我們進入導航(hang)里面(mian)的一(yi)鍵刷機(ji)，選擇(ze)好刷機(ji)包點擊(ji)下(xia)一(yi)步(bu)，選擇(ze)是否備案(an)，然后點擊(ji)下(xia)一(yi)步(bu)就(jiu)坐等刷機(ji)成功提示啦。

2、Recovery模式刷機(ji)方(fang)法：

步驟一、首先要確定你的手機是否刷(shua)入了Recovery，如果沒(mei)有的(de)需要(yao)刷(shua)入Recovery才能進入Recovery進行刷(shua)機。這里(li)后(hou)續在為大家演(yan)示(shi)刷(shua)入Recovery的(de)方(fang)法。

步驟二、然(ran)后我們在進入設置把(ba)USB調(diao)(diao)試(shi)關(guan)閉掉，把(ba)刷機(ji)包復制到(dao)你(ni)的SD卡里面(mian)。關(guan)閉了USB調(diao)(diao)試(shi)才能讀取出(chu)來你(ni)的手機(ji)內(nei)存。

步驟三、然后(hou)在進(jin)入(ru)(ru)(ru)recovery模(mo)式(shi)(shi)，進(jin)入(ru)(ru)(ru)recovery模(mo)式(shi)(shi)的(de)按鍵(jian)(jian)有的(de)不(bu)一樣(yang)。有的(de)可以從(cong)電腦控制進(jin)入(ru)(ru)(ru)recovery模(mo)式(shi)(shi)，有的(de)按著開機鍵(jian)(jian)+音量鍵(jian)(jian)就能進(jin)入(ru)(ru)(ru)recovery模(mo)式(shi)(shi)。進(jin)入(ru)(ru)(ru)recovery模(mo)式(shi)(shi)之后(hou)先(xian)清除所有的(de)數據。

步(bu)驟四、然后我們在清除手機里面的緩(huan)存數據，這(zhe)些操作上(shang)下就可(ke)以使用音量(liang)鍵(jian)調節。確定就是開機鍵(jian)。

步驟五、然后我們在(zai)選擇(ze)刷機(ji)包，我們是(shi)裝(zhuang)在(zai)SD卡(ka)上面的。所以從SD卡(ka)上面選擇(ze)刷機(ji)包。

步(bu)驟六、我們(men)的刷(shua)機包是ZIP文件(jian)，點(dian)擊從SD卡上面選(xuan)擇(ze)ZIP文件(jian)。然后選(xuan)擇(ze)刷(shua)機包的文件(jian)點(dian)擊確定即可。

步驟七、刷(shua)機(ji)成功之后會有(you)成功的(de)提示，然后返回(hui)重(zhong)啟(qi)系統即可進入你刷(shua)的(de)新系統里面了。