IBM X31筆記本,有時(shí)能開(kāi)機,有時(shí)不開(kāi)機,剛接手時(shí)不開(kāi)機,沒(méi)3V 5V,量供電,控制,線(xiàn)性5V都正常,7腳28腳的電壓為1.6V,懷疑有點(diǎn)低,跑電路到TB62501上,實(shí)際上是PMH4發(fā)出的,但又怕是1631的問(wèn)題,將7腳28腳挑起,量電壓正常,將1631換之,加電開(kāi)機了,沒(méi)想,裝機,裝完上電池不開(kāi)機了,拔掉電池也是時(shí)開(kāi)機時(shí)不開(kāi)機,哎,拆機,找故障吧,從早上折騰到下午下班了,看論壇說(shuō)3V5V的大電容有微短路,死馬當活馬醫,將其換之,加電,好了。