手機開不了機的原因

1、開(kai)機線不正(zheng)常引(yin)起的不開(kai)機

正常情況下，按下手機開(kai)(kai)機(ji)(ji)鍵(jian)(jian)時，開(kai)(kai)機(ji)(ji)鍵(jian)(jian)的觸發端(duan)電壓應(ying)(ying)有明顯變(bian)化(hua)，若無變(bian)化(hua)，一(yi)(yi)般是開(kai)(kai)機(ji)(ji)鍵(jian)(jian)接觸不(bu)良或者是開(kai)(kai)機(ji)(ji)線(xian)斷(duan)線(xian)、元件虛焊、損壞。維(wei)修時，用外接電源供(gong)電，觀察電流表的變(bian)化(hua)，如果電流表無反應(ying)(ying)，一(yi)(yi)般是開(kai)(kai)機(ji)(ji)線(xian)斷(duan)線(xian)或開(kai)(kai)機(ji)(ji)鍵(jian)(jian)不(bu)良。

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2、電(dian)池供電(dian)電(dian)路不良引起(qi)的不開(kai)機

對(dui)于大部分手(shou)(shou)(shou)(shou)機(ji)，手(shou)(shou)(shou)(shou)機(ji)加(jia)上電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池或外(wai)接(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)后，供(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)壓直接(jie)加(jia)到(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)工C上，如果(guo)(guo)供(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)壓未加(jia)到(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)IC上，手(shou)(shou)(shou)(shou)機(ji)就(jiu)不(bu)可能開(kai)(kai)機(ji)。對(dui)于摩(mo)托(tuo)(tuo)羅(luo)拉系列的手(shou)(shou)(shou)(shou)機(ji)(摩(mo)托(tuo)(tuo)羅(luo)拉T2688除(chu)外(wai))，供(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)有所不(bu)同，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池供(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)和(he)外(wai)接(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)供(gong)(gong)(gong)(gong)電(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)子(zi)開(kai)(kai)關(guan)轉換再(zai)加(jia)到(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)IC上。也就(jiu)是(shi)說(shuo)(shuo)，手(shou)(shou)(shou)(shou)機(ji)的供(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)有兩條路(lu)徑，一(yi)路(lu)是(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池供(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian);另一(yi)路(lu)是(shi)外(wai)部接(jie)口(kou)供(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(帶機(ji)充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)座供(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)時)。當兩路(lu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)同時供(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)時，外(wai)部接(jie)口(kou)供(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)優先(xian)。而這(zhe)(zhe)兩路(lu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)的切換是(shi)由(you)(you)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)開(kai)(kai)關(guan)管來(lai)控制，主要達(da)到(dao)(dao)對(dui)整(zheng)機(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流起到(dao)(dao)保護作用，防止因短路(lu)或者漏電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)對(dui)手(shou)(shou)(shou)(shou)機(ji)內(nei)部的集成電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)造(zao)成損壞(huai)。但是(shi)，如果(guo)(guo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)開(kai)(kai)關(guan)損壞(huai)，中源(yuan)模(mo)塊(kuai)就(jiu)有可能得不(bu)到(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池的供(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)壓引起手(shou)(shou)(shou)(shou)機(ji)不(bu)開(kai)(kai)機(ji)。對(dui)于這(zhe)(zhe)種由(you)(you)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)開(kai)(kai)關(guan)供(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的手(shou)(shou)(shou)(shou)機(ji)，由(you)(you)于既可以用外(wai)接(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)接(jie)口(kou)供(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，也可以通過(guo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池觸片用外(wai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)加(jia)以供(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)。維修時可通過(guo)不(bu)同的供(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)方式進行供(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，以便(bian)區(qu)分故(gu)障范圍和(he)確定(ding)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)開(kai)(kai)關(guan)是(shi)否正常。一(yi)般來(lai)說(shuo)(shuo)，如果(guo)(guo)供(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)不(bu)良，按開(kai)(kai)機(ji)鍵電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流表會(hui)無(wu)反應，這(zhe)(zhe)和(he)開(kai)(kai)機(ji)線不(bu)良十分相似(si)。

3、電源IC不(bu)正常引起的不(bu)開

手機要(yao)正(zheng)常工作，電(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)路(lu)(lu)要(yao)輸(shu)(shu)出正(zheng)常的(de)(de)電(dian)(dian)(dian)壓(ya)供(gong)(gong)(gong)(gong)(gong)給(gei)(gei)負載電(dian)(dian)(dian)路(lu)(lu)。在(zai)電(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)路(lu)(lu)中(zhong)，電(dian)(dian)(dian)源(yuan)(yuan)IC是其(qi)核心電(dian)(dian)(dian)路(lu)(lu)，不(bu)(bu)同品種及型號的(de)(de)手(shou)機(ji)(ji)，供(gong)(gong)(gong)(gong)(gong)電(dian)(dian)(dian)方式(shi)亦有(you)所不(bu)(bu)同，有(you)的(de)(de)電(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)路(lu)(lu)的(de)(de)供(gong)(gong)(gong)(gong)(gong)電(dian)(dian)(dian)由幾塊(kuai)穩壓(ya)管供(gong)(gong)(gong)(gong)(gong)給(gei)(gei)，如愛立信早期系(xi)(xi)(xi)列(T18之前)手(shou)機(ji)(ji)、部分三星系(xi)(xi)(xi)列手(shou)機(ji)(ji)等(deng)。有(you)的(de)(de)卻(que)有(you)一(yi)塊(kuai)電(dian)(dian)(dian)源(yuan)(yuan)模(mo)塊(kuai)直接供(gong)(gong)(gong)(gong)(gong)給(gei)(gei)，如摩托羅(luo)拉(la)系(xi)(xi)(xi)列手(shou)機(ji)(ji)、諾(nuo)基(ji)亞系(xi)(xi)(xi)列手(shou)機(ji)(ji)等(deng)。但不(bu)(bu)管怎樣，如果電(dian)(dian)(dian)源(yuan)(yuan)IC不(bu)(bu)能正(zheng)常工作，就有(you)可(ke)能造成手(shou)機(ji)(ji)不(bu)(bu)開機(ji)(ji)。對(dui)(dui)于電(dian)(dian)(dian)源(yuan)(yuan)IC，重(zhong)點是檢查(cha)其(qi)輸(shu)(shu)出的(de)(de)邏輯供(gong)(gong)(gong)(gong)(gong)電(dian)(dian)(dian)電(dian)(dian)(dian)壓(ya)、13MHz時鐘供(gong)(gong)(gong)(gong)(gong)電(dian)(dian)(dian)電(dian)(dian)(dian)壓(ya)，在(zai)按開機(ji)(ji)鍵的(de)(de)過程中(zhong)應能測(ce)到(不(bu)(bu)一(yi)定維(wei)持住)，若測(ce)不(bu)(bu)到，在(zai)開機(ji)(ji)鍵、電(dian)(dian)(dian)池供(gong)(gong)(gong)(gong)(gong)電(dian)(dian)(dian)正(zheng)常的(de)(de)情況下，說明電(dian)(dian)(dian)源(yuan)(yuan)IC虛(xu)焊(han)、損壞。目前，越來(lai)越多的(de)(de)電(dian)(dian)(dian)源(yuan)(yuan)IC采(cai)用了BGA封裝，給(gei)(gei)測(ce)量(liang)和維(wei)修帶來(lai)了很大的(de)(de)負擔，測(ce)量(liang)時可(ke)對(dui)(dui)照電(dian)(dian)(dian)路(lu)(lu)原理(li)圖在(zai)電(dian)(dian)(dian)源(yuan)(yuan)IC的(de)(de)外圍電(dian)(dian)(dian)路(lu)(lu)的(de)(de)測(ce)試點上進行測(ce)試。若判斷電(dian)(dian)(dian)源(yuan)(yuan)IC虛(xu)焊(han)或損壞，需重(zhong)新植錫(xi)、代換，這(zhe)需要(yao)較(jiao)高(gao)的(de)(de)操作技巧(qiao)，需在(zai)實踐中(zhong)加以磨練。

4、系統對鐘和復位不正常引起的不開機

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)鐘(zhong)(zhong)(zhong)(zhong)一(yi)(yi)般(ban)采(cai)用(yong)(yong)13MHz，13MHz時(shi)(shi)(shi)(shi)鐘(zhong)(zhong)(zhong)(zhong)不(bu)(bu)正(zheng)(zheng)常(chang)，邏輯電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)不(bu)(bu)工(gong)作，手(shou)(shou)機(ji)(ji)(ji)(ji)不(bu)(bu)可(ke)能(neng)開(kai)機(ji)(ji)(ji)(ji)。13MHz時(shi)(shi)(shi)(shi)鐘(zhong)(zhong)(zhong)(zhong)信(xin)號應(ying)能(neng)達到一(yi)(yi)定的(de)幅(fu)度(du)并穩定。用(yong)(yong)示波器測13MHz時(shi)(shi)(shi)(shi)鐘(zhong)(zhong)(zhong)(zhong)輸(shu)出端(duan)上(shang)(shang)的(de)波形(xing)(xing)，如(ru)果(guo)無波形(xing)(xing)則(ze)(ze)檢測13MHz時(shi)(shi)(shi)(shi)鐘(zhong)(zhong)(zhong)(zhong)振(zhen)蕩(dang)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)壓(對于13MHzVCO，供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)壓加到13MHzVCO的(de)一(yi)(yi)個腳亡，對于13MHz晶(jing)(jing)振(zhen)組(zu)成的(de)振(zhen)蕩(dang)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)，這個供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)壓一(yi)(yi)般(ban)供(gong)給中頻IC)，若有(you)(you)正(zheng)(zheng)常(chang)電(dian)(dian)(dian)(dian)(dian)(dian)壓則(ze)(ze)為(wei)(wei)13MHz時(shi)(shi)(shi)(shi)鐘(zhong)(zhong)(zhong)(zhong)晶(jing)(jing)體(ti)、中頻IC或(huo)13MHzVCO壞。注意，有(you)(you)的(de)示波器在(zai)晶(jing)(jing)體(ti)上(shang)(shang)測可(ke)能(neng)會使晶(jing)(jing)體(ti)停振(zhen)，此時(shi)(shi)(shi)(shi)，可(ke)在(zai)探(tan)頭上(shang)(shang)串接(jie)一(yi)(yi)個幾十皮法以下的(de)電(dian)(dian)(dian)(dian)(dian)(dian)容。有(you)(you)條件(jian)的(de)話，最好(hao)使用(yong)(yong)代換(huan)法進(jin)行(xing)維修，以節約時(shi)(shi)(shi)(shi)間(jian)，提高(gao)效率(lv)。13MHz時(shi)(shi)(shi)(shi)鐘(zhong)(zhong)(zhong)(zhong)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)起(qi)(qi)振(zhen)后，應(ying)確保13MHz時(shi)(shi)(shi)(shi)鐘(zhong)(zhong)(zhong)(zhong)信(xin)號能(neng)通過電(dian)(dian)(dian)(dian)(dian)(dian)阻、電(dian)(dian)(dian)(dian)(dian)(dian)容及放大(da)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)輸(shu)人到CPU引(yin)腳上(shang)(shang)，測試CPU時(shi)(shi)(shi)(shi)鐘(zhong)(zhong)(zhong)(zhong)輸(shu)入腳，如(ru)沒有(you)(you)，應(ying)檢查(cha)線路(lu)(lu)(lu)(lu)中電(dian)(dian)(dian)(dian)(dian)(dian)阻、電(dian)(dian)(dian)(dian)(dian)(dian)容、放大(da)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)是(shi)(shi)否虛焊或(huo)無供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)及損壞。另(ling)外，有(you)(you)些手(shou)(shou)機(ji)(ji)(ji)(ji)的(de)時(shi)(shi)(shi)(shi)鐘(zhong)(zhong)(zhong)(zhong)晶(jing)(jing)體(ti)或(huo)時(shi)(shi)(shi)(shi)鐘(zhong)(zhong)(zhong)(zhong)VCO是(shi)(shi)26MHz(如(ru)摩托羅(luo)拉(la)V998、諾(nuo)基3310手(shou)(shou)機(ji)(ji)(ji)(ji))或(huo)19.5MHz(如(ru)三星A188手(shou)(shou)機(ji)(ji)(ji)(ji))，產生的(de)振(zhen)蕩(dang)頻率(lv)要(yao)經過中頻IC分頻為(wei)(wei)13MHz后才(cai)供(gong)給CPU。復(fu)位(wei)信(xin)號也是(shi)(shi)CPU工(gong)作工(gong)作條件(jian)之一(yi)(yi)，符號是(shi)(shi)RESET，簡寫(xie)RST，諾(nuo)基亞乎機(ji)(ji)(ji)(ji)中用(yong)(yong)PURX表示。復(fu)位(wei)一(yi)(yi)般(ban)直接(jie)由電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)IC通往(wang)CPU，或(huo)使用(yong)(yong)一(yi)(yi)專(zhuan)用(yong)(yong)復(fu)位(wei)小集成電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)。復(fu)位(wei)在(zai)開(kai)機(ji)(ji)(ji)(ji)瞬間(jian)存(cun)在(zai)，開(kai)機(ji)(ji)(ji)(ji)后測量時(shi)(shi)(shi)(shi)己為(wei)(wei)高(gao)電(dian)(dian)(dian)(dian)(dian)(dian)平。如(ru)果(guo)需要(yao)測量正(zheng)(zheng)確的(de)復(fu)位(wei)時(shi)(shi)(shi)(shi)間(jian)波形(xing)(xing)，應(ying)使用(yong)(yong)雙蹤(zong)示波器，一(yi)(yi)路(lu)(lu)(lu)(lu)測CPU電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)，一(yi)(yi)路(lu)(lu)(lu)(lu)測復(fu)位(wei)。維修中發現(xian)，因復(fu)位(wei)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)不(bu)(bu)正(zheng)(zheng)常(chang)引(yin)起(qi)(qi)的(de)手(shou)(shou)機(ji)(ji)(ji)(ji)不(bu)(bu)開(kai)機(ji)(ji)(ji)(ji)并不(bu)(bu)多(duo)見。

5、邏輯電路不(bu)正(zheng)常引起的(de)不(bu)開機(ji)

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)經常會引(yin)起(qi)機(ji)板變形，如按按鍵、摔(shuai)、碰等外(wai)力原因(yin)會引(yin)起(qi)某些芯片脫(tuo)焊(han)，一般補焊(han)或重(zhong)焊(han)這些芯片會解決大部分問(wen)題(ti)。當重(zhong)焊(han)或代換正常的芯片還不(bu)能開機(ji)，并且使用免(mian)拆機(ji)維修儀讀寫(xie)也不(bu)能通過時(shi)，應逐個測(ce)量外(wai)圍電路和代換這些芯片。

6、軟件不正(zheng)常引(yin)起的不開機

手機在開機過(guo)程(cheng)中，若(ruo)軟件(jian)通不過(guo)就會不開機，軟件(jian)出(chu)錯主要是存儲器資料不正(zheng)常，當線路沒有(you)明顯斷(duan)線時，可以先代換正(zheng)常的碼片、版本(ben)或(huo)重寫(xie)軟件(jian)，有(you)的芯片內電路會損(sun)壞，重寫(xie)時則不能通過(guo)。重寫(xie)軟件(jian)時應將(jiang)原來資料保存，以備應急修復。

7、其它(ta)原因引起的不開機

手(shou)(shou)機(ji)(ji)不(bu)(bu)(bu)開機(ji)(ji)故障的(de)原因還有很(hen)多，如液晶顯示屏不(bu)(bu)(bu)良、元件(特別(bie)是(shi)功(gong)放)短路等都(dou)有可能引起(qi)手(shou)(shou)機(ji)(ji)不(bu)(bu)(bu)開機(ji)(ji)，還有一(yi)些機(ji)(ji)型必須用到32.768kHz的(de)實時(shi)(shi)時(shi)(shi)鐘(zhong)(zhong)作為碼(ma)片時(shi)(shi)鐘(zhong)(zhong)信號(hao)和睡眠時(shi)(shi)鐘(zhong)(zhong)信號(hao)。若32.768kHz實時(shi)(shi)時(shi)(shi)鐘(zhong)(zhong)不(bu)(bu)(bu)正常(chang)(chang)，也可能造(zao)成手(shou)(shou)機(ji)(ji)不(bu)(bu)(bu)開機(ji)(ji)。引起(qi)32.768kHz時(shi)(shi)鐘(zhong)(zhong)不(bu)(bu)(bu)正常(chang)(chang)的(de)因素主要(yao)有時(shi)(shi)鐘(zhong)(zhong)備用電(dian)池(chi)短路、32.768kHz時(shi)(shi)鐘(zhong)(zhong)壞等。所以，在(zai)維修手(shou)(shou)機(ji)(ji)不(bu)(bu)(bu)開機(ji)(ji)時(shi)(shi)要(yao)結合具體電(dian)路具體分析，只要(yao)對手(shou)(shou)機(ji)(ji)的(de)原理(li)(li)理(li)(li)解正確，思路清(qing)楚(chu)，不(bu)(bu)(bu)開機(ji)(ji)故障一(yi)般都(dou)可以排除。

手機開不了機如何解決

第一步(bu)：檢(jian)查(cha)電池是否(fou)有電，電池沒電了，手(shou)機自然沒有動力(li)去(qu)開機，如果怎么沖它都不會(hui)啟動的(de)話可以(yi)檢(jian)查(cha)一下充(chong)電器是否(fou)工作，接口(kou)是否(fou)損壞，用(yong)萬能充(chong)充(chong)電或檢(jian)測電量。

第二步：檢查電(dian)池(chi)是(shi)否損(sun)壞或者壽命已到，電(dian)池(chi)是(shi)消(xiao)耗品，如果(guo)損(sun)壞或者使用不當導致電(dian)池(chi)過早損(sun)壞，可以嘗試換(huan)一塊(kuai)電(dian)池(chi)，看(kan)一看(kan)是(shi)否可以啟動，如果(guo)問題解決，就需(xu)要(yao)更(geng)換(huan)電(dian)池(chi)。

第三步：進水或刷機(ji)(ji)(ji)造成人(ren)為性損(sun)壞(huai)，這種(zhong)問(wen)題就是自身(shen)的(de)原因了，進水的(de)話(hua)用吹(chui)風(feng)機(ji)(ji)(ji)吹(chui)一吹(chui)，拆機(ji)(ji)(ji)烘(hong)烤(kao)試(shi)一試(shi)，如果摔壞(huai)了，內(nei)部零件(jian)損(sun)毀，就需要找維修中(zhong)心維修了。如果刷機(ji)(ji)(ji)造成無法開機(ji)(ji)(ji)，可以重新刷機(ji)(ji)(ji)嘗(chang)試(shi)恢(hui)復。

第四步：如(ru)果基本的(de)(de)方法都(dou)嘗試(shi)過了(le)，還是無效的(de)(de)話，就只能去找(zhao)專業的(de)(de)維修(xiu)中心來進行維修(xiu)，一(yi)般無法開(kai)機的(de)(de)故(gu)障自己不好(hao)解決，也可以試(shi)試(shi)搜(sou)索，看看有沒(mei)有適合你(ni)的(de)(de)解決辦法。

手機開不了機怎么刷機

這里(li)介紹最簡單的刷(shua)機方式：一(yi)種是(shi)使用(yong)軟(ruan)件下載ROM一(yi)鍵在線(xian)刷(shua)機！另(ling)外一(yi)種是(shi)把ROM復制(zhi)到(dao)SD卡里(li)面然后進入recovery模式進行刷(shua)機！

1、用軟件一鍵在線刷機：

步(bu)驟(zou)一(yi)、這個(ge)需要(yao)安裝一(yi)款刷(shua)機(ji)軟(ruan)件，這個(ge)軟(ruan)件用的(de)人(ren)也(ye)非常的(de)多，還(huan)有一(yi)件ROOT的(de)功能，刷(shua)機(ji)也(ye)需要(yao)ROOT。我們百度搜索“卓大師(shi)”，然后點擊下(xia)載安裝。

步驟二、然后我們(men)在(zai)進入(ru)自己(ji)的手機，點擊設(she)置(zhi)，然后點擊開(kai)發人員選項。把USB調試(shi)打開(kai)。不同安卓版本的手機打開(kai)的位置(zhi)也不一(yi)樣。自己(ji)在(zai)設(she)置(zhi)里面找找就能(neng)看(kan)到。

步驟(zou)三、然后把手(shou)機(ji)(ji)(ji)用數據線連(lian)接好電(dian)腦(nao)，然后在(zai)打開安裝好的卓大師，卓大師連(lian)接手(shou)機(ji)(ji)(ji)成功之后點擊ROM專區。這里面(mian)會(hui)有很多手(shou)機(ji)(ji)(ji)的刷(shua)機(ji)(ji)(ji)包。找一個適合(he)自(zi)己機(ji)(ji)(ji)型的刷(shua)機(ji)(ji)(ji)包下載。

步驟四、然后(hou)在按(an)照上圖的(de)指示，點擊(ji)下(xia)面的(de)下(xia)載狀態，打開之(zhi)后(hou)就會看到ROM下(xia)載的(de)位(wei)置。

步驟五、然后把你下載的ROM的壓縮文件復制(zhi)出來。這個(ge)文件也可以直接(jie)復制(zhi)到SD卡里面進(jin)入recovery模式進(jin)行(xing)刷機(ji)，下載刷機(ji)包是最重(zhong)要的。而且刷機(ji)包呀下載適合自己機(ji)型(xing)的，不然很容易(yi)變磚。

步(bu)驟六、下(xia)(xia)(xia)載完之后會出現刷(shua)機的按鈕，或者(zhe)我們進入導航里面的一鍵刷(shua)機，選擇(ze)好刷(shua)機包點擊下(xia)(xia)(xia)一步(bu)，選擇(ze)是(shi)否備案，然后點擊下(xia)(xia)(xia)一步(bu)就坐等刷(shua)機成功提示啦。

2、Recovery模式(shi)刷(shua)機方法：

步驟一、首先要確定你的手機是否刷入了Recovery，如果沒有的(de)需要(yao)刷入Recovery才能(neng)進入Recovery進行刷機。這(zhe)里(li)后續在為大(da)家演示(shi)刷入Recovery的(de)方法。

步(bu)驟二(er)、然后我們在進入設置(zhi)把(ba)USB調(diao)試關(guan)閉(bi)掉，把(ba)刷機包復制到你(ni)的SD卡里面。關(guan)閉(bi)了USB調(diao)試才能讀(du)取出來你(ni)的手機內存。

步驟(zou)三、然后在進(jin)(jin)入(ru)(ru)(ru)recovery模(mo)(mo)式，進(jin)(jin)入(ru)(ru)(ru)recovery模(mo)(mo)式的(de)(de)按鍵(jian)有的(de)(de)不(bu)一樣。有的(de)(de)可以從電腦控制(zhi)進(jin)(jin)入(ru)(ru)(ru)recovery模(mo)(mo)式，有的(de)(de)按著(zhu)開機鍵(jian)+音量(liang)鍵(jian)就能進(jin)(jin)入(ru)(ru)(ru)recovery模(mo)(mo)式。進(jin)(jin)入(ru)(ru)(ru)recovery模(mo)(mo)式之(zhi)后先(xian)清除所有的(de)(de)數據。

步(bu)驟四(si)、然后我們在清(qing)除手機(ji)里(li)面的緩存數據(ju)，這(zhe)些操(cao)作上下就可以使用音量鍵(jian)調節。確定就是開機(ji)鍵(jian)。

步驟(zou)五、然后我(wo)們在(zai)選擇(ze)刷機包，我(wo)們是(shi)裝在(zai)SD卡上面的。所(suo)以(yi)從SD卡上面選擇(ze)刷機包。

步驟(zou)六、我們的(de)刷機包是ZIP文(wen)(wen)件，點(dian)擊(ji)從(cong)SD卡上面(mian)選(xuan)擇ZIP文(wen)(wen)件。然后選(xuan)擇刷機包的(de)文(wen)(wen)件點(dian)擊(ji)確定(ding)即(ji)可。

步(bu)驟七(qi)、刷(shua)機成(cheng)功之后會有成(cheng)功的提示(shi)，然后返回重啟系統即可進入你刷(shua)的新(xin)系統里面了。