手機開不了機的原因

1、開機線不正(zheng)常引(yin)起的不開機

正常情況下，按下手機開(kai)機(ji)(ji)鍵時，開(kai)機(ji)(ji)鍵的觸發端電壓(ya)應(ying)有(you)明顯變化(hua)，若無變化(hua)，一般(ban)是開(kai)機(ji)(ji)鍵接觸不良或者是開(kai)機(ji)(ji)線(xian)斷線(xian)、元件虛(xu)焊(han)、損(sun)壞。維(wei)修時，用外(wai)接電源供電，觀察電流表(biao)的變化(hua)，如果電流表(biao)無反應(ying)，一般(ban)是開(kai)機(ji)(ji)線(xian)斷線(xian)或開(kai)機(ji)(ji)鍵不良。

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2、電池供電電路不良引起的不開機

對(dui)于大部(bu)分手(shou)機，手(shou)機加(jia)上(shang)(shang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池或外(wai)(wai)(wai)接(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源后，供(gong)(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)直接(jie)加(jia)到(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源工C上(shang)(shang)，如果供(gong)(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)未(wei)加(jia)到(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源IC上(shang)(shang)，手(shou)機就不(bu)可(ke)能(neng)開(kai)機。對(dui)于摩托(tuo)(tuo)羅拉系列(lie)的手(shou)機(摩托(tuo)(tuo)羅拉T2688除外(wai)(wai)(wai))，供(gong)(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)有所(suo)不(bu)同(tong)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池供(gong)(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)和外(wai)(wai)(wai)接(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源供(gong)(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)要經過電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)開(kai)關(guan)轉換再(zai)加(jia)到(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源IC上(shang)(shang)。也就是(shi)說(shuo)，手(shou)機的供(gong)(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)有兩條路(lu)(lu)徑(jing)，一路(lu)(lu)是(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池供(gong)(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian);另一路(lu)(lu)是(shi)外(wai)(wai)(wai)部(bu)接(jie)口(kou)供(gong)(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(帶機充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)座(zuo)供(gong)(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)時)。當兩路(lu)(lu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源同(tong)時供(gong)(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)時，外(wai)(wai)(wai)部(bu)接(jie)口(kou)供(gong)(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)優先(xian)。而(er)這(zhe)兩路(lu)(lu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源的切換是(shi)由(you)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)開(kai)關(guan)管來(lai)控制，主要達到(dao)對(dui)整機電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流起到(dao)保護作用(yong)，防止因短路(lu)(lu)或者漏電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)對(dui)手(shou)機內部(bu)的集成電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)造成損(sun)壞。但是(shi)，如果電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)開(kai)關(guan)損(sun)壞，中源模塊就有可(ke)能(neng)得不(bu)到(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池的供(gong)(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)引起手(shou)機不(bu)開(kai)機。對(dui)于這(zhe)種(zhong)由(you)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)開(kai)關(guan)供(gong)(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的手(shou)機，由(you)于既可(ke)以(yi)用(yong)外(wai)(wai)(wai)接(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源接(jie)口(kou)供(gong)(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，也可(ke)以(yi)通(tong)(tong)過電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池觸片用(yong)外(wai)(wai)(wai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源加(jia)以(yi)供(gong)(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)。維(wei)修時可(ke)通(tong)(tong)過不(bu)同(tong)的供(gong)(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)方(fang)式進行供(gong)(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，以(yi)便區分故(gu)障范圍和確定電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)開(kai)關(guan)是(shi)否正常。一般(ban)來(lai)說(shuo)，如果供(gong)(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)不(bu)良(liang)，按開(kai)機鍵電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流表(biao)會無反應，這(zhe)和開(kai)機線不(bu)良(liang)十(shi)分相(xiang)似。

3、電源IC不(bu)正常(chang)引起的不(bu)開

手機要(yao)正(zheng)(zheng)常工作，電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)要(yao)輸(shu)出(chu)(chu)正(zheng)(zheng)常的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)供(gong)給負(fu)載電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)。在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中，電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)IC是其核(he)心電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)，不(bu)同(tong)(tong)品種及型(xing)號(hao)的(de)(de)(de)手(shou)機(ji)，供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)方式亦有(you)所不(bu)同(tong)(tong)，有(you)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)的(de)(de)(de)供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)由(you)幾塊穩壓(ya)管供(gong)給，如(ru)愛立信早期系(xi)列(lie)(T18之前(qian))手(shou)機(ji)、部分三星系(xi)列(lie)手(shou)機(ji)等(deng)。有(you)的(de)(de)(de)卻有(you)一塊電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)模塊直接(jie)供(gong)給，如(ru)摩托(tuo)羅拉系(xi)列(lie)手(shou)機(ji)、諾基亞系(xi)列(lie)手(shou)機(ji)等(deng)。但不(bu)管怎樣，如(ru)果電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)IC不(bu)能(neng)正(zheng)(zheng)常工作，就有(you)可能(neng)造(zao)成手(shou)機(ji)不(bu)開機(ji)。對(dui)于電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)IC，重(zhong)點是檢查其輸(shu)出(chu)(chu)的(de)(de)(de)邏(luo)輯供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)、13MHz時(shi)鐘供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)，在(zai)(zai)按開機(ji)鍵的(de)(de)(de)過程中應能(neng)測(ce)(ce)到(dao)(dao)(不(bu)一定(ding)維(wei)持住)，若(ruo)測(ce)(ce)不(bu)到(dao)(dao)，在(zai)(zai)開機(ji)鍵、電(dian)(dian)(dian)(dian)(dian)(dian)池供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)正(zheng)(zheng)常的(de)(de)(de)情況下，說明電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)IC虛焊、損壞(huai)。目前(qian)，越來越多的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)IC采用了BGA封裝(zhuang)，給測(ce)(ce)量(liang)和(he)維(wei)修帶來了很大的(de)(de)(de)負(fu)擔，測(ce)(ce)量(liang)時(shi)可對(dui)照電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)原(yuan)理圖在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)IC的(de)(de)(de)外圍電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)的(de)(de)(de)測(ce)(ce)試點上進(jin)行測(ce)(ce)試。若(ruo)判斷(duan)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)IC虛焊或損壞(huai)，需(xu)重(zhong)新植錫、代換(huan)，這(zhe)需(xu)要(yao)較高的(de)(de)(de)操作技巧，需(xu)在(zai)(zai)實踐中加以磨練(lian)。

4、系(xi)統(tong)對鐘和復位不(bu)正常引起的不(bu)開機

系統時鐘是CPU正常工作的條件之一，手機的(de)(de)系統時(shi)(shi)(shi)(shi)(shi)鐘(zhong)(zhong)一(yi)(yi)般(ban)采用13MHz，13MHz時(shi)(shi)(shi)(shi)(shi)鐘(zhong)(zhong)不正(zheng)常，邏輯(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)不工(gong)作(zuo)，手(shou)機(ji)(ji)(ji)不可能開機(ji)(ji)(ji)。13MHz時(shi)(shi)(shi)(shi)(shi)鐘(zhong)(zhong)信(xin)(xin)號(hao)應能達到一(yi)(yi)定的(de)(de)幅度并穩(wen)定。用示(shi)波器(qi)測(ce)(ce)13MHz時(shi)(shi)(shi)(shi)(shi)鐘(zhong)(zhong)輸(shu)出端上(shang)(shang)(shang)的(de)(de)波形(xing)(xing)，如果無波形(xing)(xing)則檢(jian)(jian)測(ce)(ce)13MHz時(shi)(shi)(shi)(shi)(shi)鐘(zhong)(zhong)振(zhen)蕩(dang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(對于13MHzVCO，供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)加(jia)到13MHzVCO的(de)(de)一(yi)(yi)個腳亡，對于13MHz晶(jing)振(zhen)組成的(de)(de)振(zhen)蕩(dang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)，這個供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)一(yi)(yi)般(ban)供(gong)給(gei)中(zhong)(zhong)(zhong)頻(pin)(pin)(pin)IC)，若有(you)正(zheng)常電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)則為13MHz時(shi)(shi)(shi)(shi)(shi)鐘(zhong)(zhong)晶(jing)體、中(zhong)(zhong)(zhong)頻(pin)(pin)(pin)IC或(huo)(huo)13MHzVCO壞。注意，有(you)的(de)(de)示(shi)波器(qi)在晶(jing)體上(shang)(shang)(shang)測(ce)(ce)可能會(hui)使(shi)晶(jing)體停(ting)振(zhen)，此時(shi)(shi)(shi)(shi)(shi)，可在探頭上(shang)(shang)(shang)串接(jie)一(yi)(yi)個幾十皮法(fa)(fa)以(yi)下(xia)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容。有(you)條件(jian)的(de)(de)話，最好(hao)使(shi)用代換法(fa)(fa)進行維修，以(yi)節約時(shi)(shi)(shi)(shi)(shi)間，提高效率(lv)。13MHz時(shi)(shi)(shi)(shi)(shi)鐘(zhong)(zhong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)起(qi)振(zhen)后，應確保13MHz時(shi)(shi)(shi)(shi)(shi)鐘(zhong)(zhong)信(xin)(xin)號(hao)能通過電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容及放(fang)(fang)大(da)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)輸(shu)人(ren)到CPU引(yin)腳上(shang)(shang)(shang)，測(ce)(ce)試CPU時(shi)(shi)(shi)(shi)(shi)鐘(zhong)(zhong)輸(shu)入腳，如沒有(you)，應檢(jian)(jian)查線路(lu)中(zhong)(zhong)(zhong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容、放(fang)(fang)大(da)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)是否虛焊(han)或(huo)(huo)無供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)及損壞。另外(wai)，有(you)些手(shou)機(ji)(ji)(ji)的(de)(de)時(shi)(shi)(shi)(shi)(shi)鐘(zhong)(zhong)晶(jing)體或(huo)(huo)時(shi)(shi)(shi)(shi)(shi)鐘(zhong)(zhong)VCO是26MHz(如摩托羅拉V998、諾基3310手(shou)機(ji)(ji)(ji))或(huo)(huo)19.5MHz(如三星A188手(shou)機(ji)(ji)(ji))，產(chan)生的(de)(de)振(zhen)蕩(dang)頻(pin)(pin)(pin)率(lv)要經過中(zhong)(zhong)(zhong)頻(pin)(pin)(pin)IC分頻(pin)(pin)(pin)為13MHz后才供(gong)給(gei)CPU。復(fu)(fu)(fu)位信(xin)(xin)號(hao)也是CPU工(gong)作(zuo)工(gong)作(zuo)條件(jian)之一(yi)(yi)，符號(hao)是RESET，簡寫RST，諾基亞乎機(ji)(ji)(ji)中(zhong)(zhong)(zhong)用PURX表示(shi)。復(fu)(fu)(fu)位一(yi)(yi)般(ban)直接(jie)由(you)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)IC通往(wang)CPU，或(huo)(huo)使(shi)用一(yi)(yi)專(zhuan)用復(fu)(fu)(fu)位小集成電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)。復(fu)(fu)(fu)位在開機(ji)(ji)(ji)瞬間存在，開機(ji)(ji)(ji)后測(ce)(ce)量時(shi)(shi)(shi)(shi)(shi)己為高電(dian)(dian)(dian)(dian)(dian)(dian)(dian)平。如果需要測(ce)(ce)量正(zheng)確的(de)(de)復(fu)(fu)(fu)位時(shi)(shi)(shi)(shi)(shi)間波形(xing)(xing)，應使(shi)用雙蹤(zong)示(shi)波器(qi)，一(yi)(yi)路(lu)測(ce)(ce)CPU電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)，一(yi)(yi)路(lu)測(ce)(ce)復(fu)(fu)(fu)位。維修中(zhong)(zhong)(zhong)發現，因復(fu)(fu)(fu)位電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)不正(zheng)常引(yin)起(qi)的(de)(de)手(shou)機(ji)(ji)(ji)不開機(ji)(ji)(ji)并不多見(jian)。

5、邏輯電路(lu)不正常引起的不開機

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(zai)使用中經常會引起機板變形，如(ru)按(an)按(an)鍵(jian)、摔、碰等外(wai)力(li)原因會引起某些(xie)芯(xin)(xin)(xin)片(pian)(pian)脫焊(han)，一般補焊(han)或(huo)(huo)重(zhong)焊(han)這些(xie)芯(xin)(xin)(xin)片(pian)(pian)會解決大部分(fen)問題。當重(zhong)焊(han)或(huo)(huo)代換(huan)(huan)正(zheng)常的芯(xin)(xin)(xin)片(pian)(pian)還不(bu)(bu)能開(kai)機，并且使用免拆機維(wei)修(xiu)儀讀(du)寫也不(bu)(bu)能通(tong)過時，應逐個測量外(wai)圍電路(lu)和(he)代換(huan)(huan)這些(xie)芯(xin)(xin)(xin)片(pian)(pian)。

6、軟(ruan)件不正常(chang)引(yin)起的不開機

手機(ji)在開機(ji)過(guo)程中，若軟(ruan)件通(tong)不過(guo)就會不開機(ji)，軟(ruan)件出錯主要是存儲器資料(liao)不正(zheng)常，當線(xian)路(lu)沒有明(ming)顯斷(duan)線(xian)時，可以先(xian)代換正(zheng)常的碼(ma)片、版本或重寫(xie)軟(ruan)件，有的芯(xin)片內(nei)電路(lu)會損壞(huai)，重寫(xie)時則不能通(tong)過(guo)。重寫(xie)軟(ruan)件時應(ying)將(jiang)原來資料(liao)保(bao)存，以備應(ying)急修復。

7、其它原因引起的不開機(ji)

手(shou)(shou)機(ji)(ji)(ji)(ji)(ji)不開機(ji)(ji)(ji)(ji)(ji)故障(zhang)的(de)(de)原因還有(you)(you)很多，如液(ye)晶顯示屏不良、元件(特別是(shi)功放)短(duan)路等(deng)都(dou)有(you)(you)可(ke)能引起手(shou)(shou)機(ji)(ji)(ji)(ji)(ji)不開機(ji)(ji)(ji)(ji)(ji)，還有(you)(you)一些機(ji)(ji)(ji)(ji)(ji)型必(bi)須用到32.768kHz的(de)(de)實時時鐘(zhong)作(zuo)為碼片時鐘(zhong)信(xin)號和睡(shui)眠時鐘(zhong)信(xin)號。若(ruo)32.768kHz實時時鐘(zhong)不正常(chang)，也可(ke)能造成手(shou)(shou)機(ji)(ji)(ji)(ji)(ji)不開機(ji)(ji)(ji)(ji)(ji)。引起32.768kHz時鐘(zhong)不正常(chang)的(de)(de)因素主要有(you)(you)時鐘(zhong)備用電(dian)池短(duan)路、32.768kHz時鐘(zhong)壞等(deng)。所以，在維修手(shou)(shou)機(ji)(ji)(ji)(ji)(ji)不開機(ji)(ji)(ji)(ji)(ji)時要結合具體電(dian)路具體分(fen)析，只要對手(shou)(shou)機(ji)(ji)(ji)(ji)(ji)的(de)(de)原理理解正確，思(si)路清楚，不開機(ji)(ji)(ji)(ji)(ji)故障(zhang)一般都(dou)可(ke)以排(pai)除(chu)。

手機開不了機如何解決

第(di)一步：檢查(cha)(cha)電(dian)(dian)池(chi)是否(fou)有電(dian)(dian)，電(dian)(dian)池(chi)沒(mei)電(dian)(dian)了，手機自然沒(mei)有動力去開機，如(ru)果怎么沖它(ta)都不會啟動的話可以檢查(cha)(cha)一下充電(dian)(dian)器是否(fou)工作，接(jie)口是否(fou)損壞(huai)，用萬能充充電(dian)(dian)或檢測電(dian)(dian)量。

第二步：檢查(cha)電(dian)(dian)池是否損壞或者(zhe)(zhe)壽命已到，電(dian)(dian)池是消耗品，如果(guo)(guo)損壞或者(zhe)(zhe)使(shi)用不當(dang)導(dao)致(zhi)電(dian)(dian)池過早損壞，可以(yi)嘗試換一(yi)塊電(dian)(dian)池，看一(yi)看是否可以(yi)啟動，如果(guo)(guo)問題解決，就(jiu)需要(yao)更換電(dian)(dian)池。

第(di)三步：進水或刷機(ji)造成(cheng)人為性損(sun)(sun)壞(huai)，這種問題(ti)就是自身的(de)原因了，進水的(de)話用(yong)吹(chui)風機(ji)吹(chui)一(yi)吹(chui)，拆機(ji)烘烤試(shi)一(yi)試(shi)，如(ru)(ru)果(guo)摔壞(huai)了，內(nei)部零件損(sun)(sun)毀，就需(xu)要找維修中心(xin)維修了。如(ru)(ru)果(guo)刷機(ji)造成(cheng)無法(fa)開機(ji)，可以(yi)重新刷機(ji)嘗試(shi)恢復。

第四步：如果基(ji)本的(de)(de)方法(fa)(fa)都嘗試過了(le)，還是(shi)無(wu)效(xiao)的(de)(de)話，就只能去(qu)找專業的(de)(de)維修(xiu)中(zhong)心來(lai)進行維修(xiu)，一般無(wu)法(fa)(fa)開機的(de)(de)故(gu)障自(zi)己不好解(jie)決，也可以試試搜索(suo)，看看有沒有適合(he)你的(de)(de)解(jie)決辦(ban)法(fa)(fa)。

手機開不了機怎么刷機

這里介紹最(zui)簡單的(de)刷(shua)機(ji)(ji)方式：一(yi)種是使用軟件下載ROM一(yi)鍵在線刷(shua)機(ji)(ji)！另外一(yi)種是把ROM復制到SD卡里面(mian)然后進入recovery模式進行刷(shua)機(ji)(ji)！

1、用(yong)軟件一鍵在線刷機(ji)：

步驟一、這(zhe)個需(xu)要安(an)裝一款刷機軟件，這(zhe)個軟件用的人(ren)也非(fei)常(chang)的多，還有一件ROOT的功能(neng)，刷機也需(xu)要ROOT。我們(men)百度搜(sou)索“卓(zhuo)大師”，然后點擊下載(zai)安(an)裝。

步驟二(er)、然后(hou)我們在進入自己(ji)的(de)手機，點擊(ji)(ji)設置，然后(hou)點擊(ji)(ji)開(kai)發人員(yuan)選項。把USB調試打(da)開(kai)。不(bu)同安卓版本(ben)的(de)手機打(da)開(kai)的(de)位置也不(bu)一樣。自己(ji)在設置里面找(zhao)找(zhao)就能看(kan)到。

步驟三、然后(hou)把手(shou)機用數(shu)據線連(lian)接好(hao)電腦，然后(hou)在打開(kai)安裝好(hao)的卓大師(shi)，卓大師(shi)連(lian)接手(shou)機成(cheng)功(gong)之(zhi)后(hou)點擊ROM專區(qu)。這里面會有很多(duo)手(shou)機的刷機包(bao)。找一個適合自己機型的刷機包(bao)下(xia)載(zai)。

步驟四、然后(hou)在按照上圖的(de)指示，點擊下面的(de)下載狀態，打(da)開(kai)之后(hou)就會看到ROM下載的(de)位置。

步驟五(wu)、然后把你下載的(de)ROM的(de)壓縮文(wen)(wen)件復(fu)制(zhi)出來。這個文(wen)(wen)件也(ye)可以直接復(fu)制(zhi)到SD卡(ka)里面(mian)進入recovery模式進行刷(shua)機，下載刷(shua)機包是最重要的(de)。而且刷(shua)機包呀下載適合自己機型的(de)，不然很容易變磚。

步驟六、下載完之后會出(chu)現刷機(ji)的按(an)鈕(niu)，或(huo)者我們進入導航里面的一(yi)鍵刷機(ji)，選(xuan)擇(ze)好刷機(ji)包點(dian)擊(ji)下一(yi)步，選(xuan)擇(ze)是否備案，然后點(dian)擊(ji)下一(yi)步就坐等刷機(ji)成(cheng)功提示啦。

2、Recovery模式刷機方(fang)法：

步驟一、首先要確定你的手機是否(fou)刷(shua)入(ru)了Recovery，如果沒有的需要刷(shua)入(ru)Recovery才能進入(ru)Recovery進行刷(shua)機(ji)。這里后續在為大(da)家演示刷(shua)入(ru)Recovery的方法。

步(bu)驟二、然后(hou)我們在進(jin)入設(she)置把(ba)USB調試(shi)關(guan)閉掉，把(ba)刷(shua)機包復制到(dao)你的SD卡里面。關(guan)閉了(le)USB調試(shi)才(cai)能(neng)讀取出來你的手機內(nei)存。

步驟三、然后在進(jin)(jin)入(ru)(ru)recovery模式(shi)，進(jin)(jin)入(ru)(ru)recovery模式(shi)的(de)按鍵(jian)有(you)的(de)不一樣(yang)。有(you)的(de)可以從電腦控制進(jin)(jin)入(ru)(ru)recovery模式(shi)，有(you)的(de)按著(zhu)開機鍵(jian)+音量鍵(jian)就能進(jin)(jin)入(ru)(ru)recovery模式(shi)。進(jin)(jin)入(ru)(ru)recovery模式(shi)之后先清除所有(you)的(de)數據。

步驟四、然后我(wo)們在(zai)清除手機(ji)里面的緩存數(shu)據，這些(xie)操作上(shang)下就可以使(shi)用音量鍵調(diao)節(jie)。確定就是開機(ji)鍵。

步驟五、然(ran)后我(wo)們在(zai)選擇刷(shua)機包，我(wo)們是裝在(zai)SD卡上面(mian)的(de)。所以(yi)從SD卡上面(mian)選擇刷(shua)機包。

步驟六、我們的刷機(ji)包是ZIP文件，點擊從SD卡上面選擇ZIP文件。然后選擇刷機(ji)包的文件點擊確定即可。

步驟七(qi)、刷機(ji)成功之(zhi)后會有成功的(de)提示(shi)，然后返(fan)回(hui)重啟系統即可進入你刷的(de)新系統里面了。