手機開不了機的原因

1、開機線不正常引起的(de)不開機

正常情況下，按下手機開(kai)(kai)機(ji)(ji)(ji)鍵時，開(kai)(kai)機(ji)(ji)(ji)鍵的(de)觸發端電壓應(ying)有明顯變(bian)化，若(ruo)無變(bian)化，一(yi)般(ban)是開(kai)(kai)機(ji)(ji)(ji)鍵接觸不(bu)良或者是開(kai)(kai)機(ji)(ji)(ji)線(xian)斷(duan)線(xian)、元件虛焊、損壞(huai)。維(wei)修時，用外接電源供電，觀(guan)察電流表(biao)的(de)變(bian)化，如果電流表(biao)無反(fan)應(ying)，一(yi)般(ban)是開(kai)(kai)機(ji)(ji)(ji)線(xian)斷(duan)線(xian)或開(kai)(kai)機(ji)(ji)(ji)鍵不(bu)良。

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2、電(dian)池供電(dian)電(dian)路不良引起的不開機

對(dui)于(yu)大(da)部分手(shou)(shou)(shou)(shou)機(ji)(ji)(ji)(ji)，手(shou)(shou)(shou)(shou)機(ji)(ji)(ji)(ji)加(jia)(jia)上(shang)(shang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)或外(wai)接電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)后，供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓直(zhi)接加(jia)(jia)到電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)工(gong)C上(shang)(shang)，如果供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓未加(jia)(jia)到電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)IC上(shang)(shang)，手(shou)(shou)(shou)(shou)機(ji)(ji)(ji)(ji)就不(bu)可能開(kai)(kai)機(ji)(ji)(ji)(ji)。對(dui)于(yu)摩(mo)托羅(luo)拉(la)系(xi)列的(de)手(shou)(shou)(shou)(shou)機(ji)(ji)(ji)(ji)(摩(mo)托羅(luo)拉(la)T2688除外(wai))，供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)有所不(bu)同(tong)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)和外(wai)接電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)要(yao)經過(guo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)開(kai)(kai)關轉換(huan)再加(jia)(jia)到電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)IC上(shang)(shang)。也就是(shi)(shi)說(shuo)，手(shou)(shou)(shou)(shou)機(ji)(ji)(ji)(ji)的(de)供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)有兩(liang)條(tiao)路(lu)(lu)(lu)(lu)徑，一路(lu)(lu)(lu)(lu)是(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian);另一路(lu)(lu)(lu)(lu)是(shi)(shi)外(wai)部接口供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(帶機(ji)(ji)(ji)(ji)充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)座供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)時(shi)(shi))。當兩(liang)路(lu)(lu)(lu)(lu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)同(tong)時(shi)(shi)供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)時(shi)(shi)，外(wai)部接口供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)優先。而這(zhe)兩(liang)路(lu)(lu)(lu)(lu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)的(de)切換(huan)是(shi)(shi)由電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)開(kai)(kai)關管來控制，主要(yao)達到對(dui)整(zheng)機(ji)(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)起(qi)到保護作用(yong)，防止因(yin)短(duan)路(lu)(lu)(lu)(lu)或者漏電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)對(dui)手(shou)(shou)(shou)(shou)機(ji)(ji)(ji)(ji)內(nei)部的(de)集成電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)造(zao)成損(sun)(sun)壞。但是(shi)(shi)，如果電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)開(kai)(kai)關損(sun)(sun)壞，中源(yuan)模(mo)塊就有可能得不(bu)到電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)的(de)供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓引(yin)起(qi)手(shou)(shou)(shou)(shou)機(ji)(ji)(ji)(ji)不(bu)開(kai)(kai)機(ji)(ji)(ji)(ji)。對(dui)于(yu)這(zhe)種由電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)開(kai)(kai)關供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)手(shou)(shou)(shou)(shou)機(ji)(ji)(ji)(ji)，由于(yu)既可以用(yong)外(wai)接電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)接口供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，也可以通過(guo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)觸片用(yong)外(wai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)加(jia)(jia)以供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)。維修時(shi)(shi)可通過(guo)不(bu)同(tong)的(de)供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)方式進行(xing)供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，以便區分故障范圍(wei)和確定電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)開(kai)(kai)關是(shi)(shi)否正常(chang)。一般來說(shuo)，如果供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)不(bu)良(liang)，按開(kai)(kai)機(ji)(ji)(ji)(ji)鍵電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)表會無反應，這(zhe)和開(kai)(kai)機(ji)(ji)(ji)(ji)線不(bu)良(liang)十分相似(si)。

3、電源IC不正(zheng)常引起的不開

手機要(yao)正(zheng)(zheng)常工作，電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)要(yao)輸出正(zheng)(zheng)常的(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓供(gong)給負載電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)。在電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)中(zhong)(zhong)，電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)IC是其核心電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)，不(bu)(bu)(bu)(bu)同品種及(ji)型號(hao)的(de)手(shou)(shou)機(ji)(ji)，供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)方式亦(yi)有(you)(you)所不(bu)(bu)(bu)(bu)同，有(you)(you)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)的(de)供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)由幾塊(kuai)穩壓管供(gong)給，如(ru)愛(ai)立信早期(qi)系列(lie)(T18之前(qian))手(shou)(shou)機(ji)(ji)、部分(fen)三星系列(lie)手(shou)(shou)機(ji)(ji)等(deng)(deng)。有(you)(you)的(de)卻有(you)(you)一(yi)(yi)塊(kuai)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)模塊(kuai)直接供(gong)給，如(ru)摩托羅拉系列(lie)手(shou)(shou)機(ji)(ji)、諾基(ji)亞系列(lie)手(shou)(shou)機(ji)(ji)等(deng)(deng)。但不(bu)(bu)(bu)(bu)管怎(zen)樣，如(ru)果電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)IC不(bu)(bu)(bu)(bu)能(neng)正(zheng)(zheng)常工作，就(jiu)有(you)(you)可(ke)(ke)能(neng)造成(cheng)手(shou)(shou)機(ji)(ji)不(bu)(bu)(bu)(bu)開(kai)機(ji)(ji)。對于(yu)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)IC，重點(dian)(dian)是檢查其輸出的(de)邏輯(ji)供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)壓、13MHz時鐘供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)壓，在按開(kai)機(ji)(ji)鍵的(de)過程(cheng)中(zhong)(zhong)應(ying)能(neng)測(ce)(ce)到(dao)(不(bu)(bu)(bu)(bu)一(yi)(yi)定維(wei)持住)，若測(ce)(ce)不(bu)(bu)(bu)(bu)到(dao)，在開(kai)機(ji)(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)情況下(xia)，說(shuo)明電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)IC虛焊、損(sun)壞(huai)。目前(qian)，越(yue)來越(yue)多(duo)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)IC采用(yong)了(le)BGA封裝，給測(ce)(ce)量(liang)和維(wei)修帶來了(le)很大的(de)負擔，測(ce)(ce)量(liang)時可(ke)(ke)對照電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)原理圖在電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)IC的(de)外圍電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)的(de)測(ce)(ce)試(shi)點(dian)(dian)上(shang)進行測(ce)(ce)試(shi)。若判斷電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)IC虛焊或損(sun)壞(huai)，需(xu)重新植錫、代換，這(zhe)需(xu)要(yao)較高的(de)操(cao)作技(ji)巧，需(xu)在實(shi)踐中(zhong)(zhong)加以(yi)磨(mo)練。

4、系統對鐘和復(fu)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)(de)系統(tong)時(shi)(shi)(shi)鐘(zhong)(zhong)(zhong)一(yi)(yi)般(ban)采用(yong)(yong)(yong)13MHz，13MHz時(shi)(shi)(shi)鐘(zhong)(zhong)(zhong)不(bu)(bu)(bu)(bu)正常，邏輯電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)不(bu)(bu)(bu)(bu)工(gong)作，手(shou)機(ji)(ji)不(bu)(bu)(bu)(bu)可(ke)能(neng)開(kai)機(ji)(ji)。13MHz時(shi)(shi)(shi)鐘(zhong)(zhong)(zhong)信號(hao)應能(neng)達(da)到(dao)(dao)一(yi)(yi)定的(de)(de)幅(fu)度并穩(wen)定。用(yong)(yong)(yong)示波(bo)器測13MHz時(shi)(shi)(shi)鐘(zhong)(zhong)(zhong)輸(shu)(shu)出端上的(de)(de)波(bo)形(xing)，如果(guo)無波(bo)形(xing)則(ze)檢(jian)測13MHz時(shi)(shi)(shi)鐘(zhong)(zhong)(zhong)振蕩電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(對(dui)于(yu)13MHzVCO，供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓加(jia)到(dao)(dao)13MHzVCO的(de)(de)一(yi)(yi)個(ge)腳(jiao)亡(wang)，對(dui)于(yu)13MHz晶振組成(cheng)的(de)(de)振蕩電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)，這(zhe)個(ge)供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓一(yi)(yi)般(ban)供(gong)(gong)給中(zhong)(zhong)頻IC)，若有正常電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓則(ze)為13MHz時(shi)(shi)(shi)鐘(zhong)(zhong)(zhong)晶體、中(zhong)(zhong)頻IC或(huo)(huo)13MHzVCO壞。注意，有的(de)(de)示波(bo)器在晶體上測可(ke)能(neng)會使晶體停振，此時(shi)(shi)(shi)，可(ke)在探頭上串接(jie)一(yi)(yi)個(ge)幾(ji)十皮(pi)法(fa)以(yi)下的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容。有條(tiao)(tiao)件(jian)的(de)(de)話，最好使用(yong)(yong)(yong)代換法(fa)進(jin)行維(wei)修，以(yi)節約時(shi)(shi)(shi)間(jian)，提高(gao)效率。13MHz時(shi)(shi)(shi)鐘(zhong)(zhong)(zhong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)起(qi)振后(hou)，應確保(bao)13MHz時(shi)(shi)(shi)鐘(zhong)(zhong)(zhong)信號(hao)能(neng)通過電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容及(ji)放大(da)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)輸(shu)(shu)人到(dao)(dao)CPU引腳(jiao)上，測試CPU時(shi)(shi)(shi)鐘(zhong)(zhong)(zhong)輸(shu)(shu)入腳(jiao)，如沒有，應檢(jian)查線路(lu)(lu)(lu)中(zhong)(zhong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容、放大(da)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)是(shi)否虛焊或(huo)(huo)無供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)及(ji)損壞。另(ling)外，有些手(shou)機(ji)(ji)的(de)(de)時(shi)(shi)(shi)鐘(zhong)(zhong)(zhong)晶體或(huo)(huo)時(shi)(shi)(shi)鐘(zhong)(zhong)(zhong)VCO是(shi)26MHz(如摩托羅拉(la)V998、諾(nuo)基3310手(shou)機(ji)(ji))或(huo)(huo)19.5MHz(如三星A188手(shou)機(ji)(ji))，產(chan)生的(de)(de)振蕩頻率要(yao)經過中(zhong)(zhong)頻IC分(fen)頻為13MHz后(hou)才供(gong)(gong)給CPU。復位(wei)信號(hao)也是(shi)CPU工(gong)作工(gong)作條(tiao)(tiao)件(jian)之一(yi)(yi)，符(fu)號(hao)是(shi)RESET，簡寫RST，諾(nuo)基亞乎機(ji)(ji)中(zhong)(zhong)用(yong)(yong)(yong)PURX表示。復位(wei)一(yi)(yi)般(ban)直接(jie)由電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)IC通往CPU，或(huo)(huo)使用(yong)(yong)(yong)一(yi)(yi)專用(yong)(yong)(yong)復位(wei)小集成(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)。復位(wei)在開(kai)機(ji)(ji)瞬間(jian)存在，開(kai)機(ji)(ji)后(hou)測量時(shi)(shi)(shi)己為高(gao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)平。如果(guo)需要(yao)測量正確的(de)(de)復位(wei)時(shi)(shi)(shi)間(jian)波(bo)形(xing)，應使用(yong)(yong)(yong)雙蹤示波(bo)器，一(yi)(yi)路(lu)(lu)(lu)測CPU電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)，一(yi)(yi)路(lu)(lu)(lu)測復位(wei)。維(wei)修中(zhong)(zhong)發現，因(yin)復位(wei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)不(bu)(bu)(bu)(bu)正常引起(qi)的(de)(de)手(shou)機(ji)(ji)不(bu)(bu)(bu)(bu)開(kai)機(ji)(ji)并不(bu)(bu)(bu)(bu)多見。

5、邏輯電(dian)路不正常引起的不開(kai)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(hui)(hui)引起機(ji)板變形，如按(an)按(an)鍵(jian)、摔、碰(peng)等外力原因會(hui)(hui)引起某(mou)些芯(xin)片(pian)脫(tuo)焊(han)，一般補焊(han)或(huo)重(zhong)焊(han)這(zhe)些芯(xin)片(pian)會(hui)(hui)解決大部分問題。當重(zhong)焊(han)或(huo)代(dai)換正常的芯(xin)片(pian)還不(bu)能開機(ji)，并(bing)且(qie)使用免拆機(ji)維修儀讀寫也不(bu)能通過(guo)時，應逐個(ge)測量外圍電路和代(dai)換這(zhe)些芯(xin)片(pian)。

6、軟件不正常引起的(de)不開機(ji)

手機(ji)在開機(ji)過程中，若(ruo)軟(ruan)件(jian)通不(bu)過就(jiu)會不(bu)開機(ji)，軟(ruan)件(jian)出錯主要是存儲器資(zi)料不(bu)正(zheng)常(chang)，當線(xian)路沒(mei)有(you)明顯斷線(xian)時(shi)，可(ke)以先(xian)代換正(zheng)常(chang)的(de)碼片、版本(ben)或(huo)重寫軟(ruan)件(jian)，有(you)的(de)芯(xin)片內(nei)電(dian)路會損壞(huai)，重寫時(shi)則不(bu)能(neng)通過。重寫軟(ruan)件(jian)時(shi)應將原來資(zi)料保(bao)存，以備(bei)應急修復。

7、其它(ta)原因引起的不開機

手機(ji)(ji)(ji)不(bu)(bu)(bu)開機(ji)(ji)(ji)故障的(de)原(yuan)因還有(you)很(hen)多，如(ru)液晶顯示(shi)屏不(bu)(bu)(bu)良、元件(特(te)別是功放)短(duan)路(lu)等(deng)都有(you)可(ke)能引起手機(ji)(ji)(ji)不(bu)(bu)(bu)開機(ji)(ji)(ji)，還有(you)一些機(ji)(ji)(ji)型必(bi)須(xu)用到32.768kHz的(de)實(shi)(shi)時(shi)(shi)(shi)(shi)(shi)時(shi)(shi)(shi)(shi)(shi)鐘(zhong)(zhong)作為碼(ma)片時(shi)(shi)(shi)(shi)(shi)鐘(zhong)(zhong)信號(hao)和睡眠(mian)時(shi)(shi)(shi)(shi)(shi)鐘(zhong)(zhong)信號(hao)。若32.768kHz實(shi)(shi)時(shi)(shi)(shi)(shi)(shi)時(shi)(shi)(shi)(shi)(shi)鐘(zhong)(zhong)不(bu)(bu)(bu)正(zheng)常，也(ye)可(ke)能造(zao)成(cheng)手機(ji)(ji)(ji)不(bu)(bu)(bu)開機(ji)(ji)(ji)。引起32.768kHz時(shi)(shi)(shi)(shi)(shi)鐘(zhong)(zhong)不(bu)(bu)(bu)正(zheng)常的(de)因素主(zhu)要有(you)時(shi)(shi)(shi)(shi)(shi)鐘(zhong)(zhong)備用電池短(duan)路(lu)、32.768kHz時(shi)(shi)(shi)(shi)(shi)鐘(zhong)(zhong)壞等(deng)。所以，在維修手機(ji)(ji)(ji)不(bu)(bu)(bu)開機(ji)(ji)(ji)時(shi)(shi)(shi)(shi)(shi)要結合具體電路(lu)具體分析，只要對手機(ji)(ji)(ji)的(de)原(yuan)理理解(jie)正(zheng)確，思路(lu)清楚，不(bu)(bu)(bu)開機(ji)(ji)(ji)故障一般都可(ke)以排除。

手機開不了機如何解決

第一(yi)步：檢(jian)查電(dian)(dian)池(chi)是否有(you)電(dian)(dian)，電(dian)(dian)池(chi)沒(mei)電(dian)(dian)了(le)，手機(ji)自(zi)然沒(mei)有(you)動(dong)力去開(kai)機(ji)，如果怎么沖(chong)它都(dou)不會啟動(dong)的(de)話(hua)可以檢(jian)查一(yi)下充(chong)電(dian)(dian)器(qi)是否工(gong)作，接口是否損壞(huai)，用萬能充(chong)充(chong)電(dian)(dian)或(huo)檢(jian)測電(dian)(dian)量。

第二(er)步：檢查電(dian)池是(shi)否損(sun)壞(huai)或者壽命(ming)已(yi)到，電(dian)池是(shi)消耗品(pin)，如(ru)果(guo)損(sun)壞(huai)或者使(shi)用不當(dang)導致電(dian)池過早損(sun)壞(huai)，可(ke)以(yi)(yi)嘗試換一塊(kuai)電(dian)池，看一看是(shi)否可(ke)以(yi)(yi)啟(qi)動，如(ru)果(guo)問(wen)題解(jie)決，就需要更換電(dian)池。

第三步：進(jin)水或刷(shua)機造成(cheng)人為性損壞，這種問題(ti)就是自(zi)身的原因了，進(jin)水的話用吹(chui)風機吹(chui)一(yi)吹(chui)，拆機烘烤(kao)試(shi)一(yi)試(shi)，如果摔壞了，內(nei)部零件損毀，就需要找維修(xiu)中心維修(xiu)了。如果刷(shua)機造成(cheng)無法開機，可(ke)以(yi)重新(xin)刷(shua)機嘗試(shi)恢復。

第四步：如果基本的(de)方法都嘗試過了(le)，還是無(wu)效的(de)話(hua)，就(jiu)只能去找專業的(de)維(wei)修(xiu)中心來進行維(wei)修(xiu)，一般無(wu)法開機的(de)故障(zhang)自(zi)己不好(hao)解決，也可以試試搜索，看(kan)(kan)看(kan)(kan)有沒有適(shi)合你的(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(shi)：一種(zhong)是使用(yong)軟件(jian)下載(zai)ROM一鍵在線刷(shua)機！另外一種(zhong)是把ROM復(fu)制到(dao)SD卡里(li)面(mian)然后進入(ru)recovery模式(shi)進行刷(shua)機！

1、用軟件一鍵在線(xian)刷機：

步驟(zou)一、這個需要安裝一款刷機(ji)軟件，這個軟件用的人也(ye)非常的多(duo)，還有一件ROOT的功能，刷機(ji)也(ye)需要ROOT。我們百度搜索“卓大師”，然(ran)后點擊下載安裝。

步驟(zou)二、然(ran)后我們(men)在進入自己的(de)手機，點(dian)擊設(she)置，然(ran)后點(dian)擊開(kai)發人員選項。把(ba)USB調試(shi)打開(kai)。不同(tong)安卓版本(ben)的(de)手機打開(kai)的(de)位置也不一樣。自己在設(she)置里面找找就能看到(dao)。

步驟三、然后把手機(ji)用數據線連(lian)接好電腦，然后在打(da)開安裝好的卓大(da)師，卓大(da)師連(lian)接手機(ji)成功之后點(dian)擊ROM專區。這(zhe)里面會有很多手機(ji)的刷(shua)(shua)機(ji)包。找一個適合自(zi)己機(ji)型的刷(shua)(shua)機(ji)包下載。

步驟四、然后在按照上圖的(de)(de)指示，點擊下面的(de)(de)下載狀態，打開之后就(jiu)會看到ROM下載的(de)(de)位置(zhi)。

步驟五、然(ran)后把你下載(zai)的(de)(de)(de)ROM的(de)(de)(de)壓縮(suo)文件復(fu)制出(chu)來。這個文件也可以直(zhi)接復(fu)制到SD卡里(li)面進入recovery模(mo)式進行刷(shua)機，下載(zai)刷(shua)機包是最重(zhong)要(yao)的(de)(de)(de)。而且刷(shua)機包呀下載(zai)適(shi)合自己機型的(de)(de)(de)，不然(ran)很(hen)容易變(bian)磚(zhuan)。

步驟六、下載完之后會出(chu)現刷(shua)機的按鈕，或者我(wo)們進入(ru)導(dao)航(hang)里(li)面的一鍵刷(shua)機，選(xuan)擇好刷(shua)機包點擊下一步，選(xuan)擇是否(fou)備案，然后點擊下一步就(jiu)坐等刷(shua)機成功(gong)提示啦。

2、Recovery模式刷(shua)機方法：

步驟一、首先要確定你的手機是否刷(shua)入了Recovery，如果沒有(you)的(de)(de)需(xu)要刷(shua)入Recovery才能進(jin)入Recovery進(jin)行(xing)刷(shua)機。這里后續在為(wei)大家演示刷(shua)入Recovery的(de)(de)方法。

步驟(zou)二、然后我們在進入(ru)設(she)置(zhi)把USB調(diao)試(shi)關(guan)閉掉，把刷(shua)機包復制到你的SD卡里面。關(guan)閉了(le)USB調(diao)試(shi)才能讀取出(chu)來你的手機內存。

步驟三、然后在進(jin)入(ru)(ru)recovery模式，進(jin)入(ru)(ru)recovery模式的按鍵有(you)(you)的不(bu)一樣。有(you)(you)的可以從電腦控制進(jin)入(ru)(ru)recovery模式，有(you)(you)的按著(zhu)開(kai)機鍵+音(yin)量鍵就能(neng)進(jin)入(ru)(ru)recovery模式。進(jin)入(ru)(ru)recovery模式之(zhi)后先清(qing)除(chu)所有(you)(you)的數據。

步驟(zou)四、然后我們(men)在清除手機(ji)里面的緩存數據，這(zhe)些(xie)操(cao)作上下(xia)就(jiu)可以使用音量鍵(jian)調節。確定就(jiu)是開機(ji)鍵(jian)。

步(bu)驟五、然后(hou)我們在選(xuan)擇刷機(ji)包(bao)(bao)，我們是裝在SD卡上面的(de)。所以(yi)從(cong)SD卡上面選(xuan)擇刷機(ji)包(bao)(bao)。

步驟(zou)六、我們(men)的(de)刷(shua)機包是ZIP文件(jian)(jian)，點擊從(cong)SD卡(ka)上面選擇(ze)ZIP文件(jian)(jian)。然后(hou)選擇(ze)刷(shua)機包的(de)文件(jian)(jian)點擊確定即可。

步驟七(qi)、刷(shua)機成功(gong)之(zhi)后會有成功(gong)的提示，然后返(fan)回重啟系統(tong)即可進入你刷(shua)的新系統(tong)里面了(le)。