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Vim li cas kev tshuaj xyuas thiab kev daws teeb meem ntawm LCD screen dawb

Aug 19, 2017

Tom qab lub LCD LCD npo muab qhib, lub vijtsam tso saib dawb (Bai Ping) ua txhaum, thiab qhov no yog qhov txhaum ntawm lub vijtsam dawb ntawm khau raj. LCD kua tshuaj pleev qhov muag zaub, lub teeb meem dub, xim dub, xiav, yog teeb meem ntawm lub cev los yog teeb meem, thiab cov npo npo muaj feem ntau dawb boot fault fault LCD LCD npo nws tus kheej, ntawm no yog saib ntawm lub teeb meem kev kuaj pom thiab kev kho lub tshuab dawb tswv yim.

Khau raj screen dawb vijtsam txhaum cai

LCD npo dawb vijtsam tsis ua haujlwm yog qhov teebmeem LCD teeb vaj tse teeb meem, LCD vaj huam sib luag fais fab teeb meem, teeb meem tsis sib thooj, kev tswj hwm teeb meem ntawm niam txiv. Txij li thaum lub LCD screen tau qhib, lub teeb dawb teeb pom kev pom tias lub teeb pom kev zoo thiab qhov siab qhov hluav taws xob qhov hluav taws xob ua hauj lwm feem ntau, tab sis lub vaj huam sib luag hauv LCD tsis tau lub teeb liab. Yog tias lub laptop kaw thiab qhov screen disappears, ces lub vijtsam dawb dua tuaj yeem yog los ntawm qhov teeb meem ntawm lub rooj tsav xwm. Los ntawm cov teeb meem tshwm sim, LCD teeb duab, seb nws yuav tsum tau switched on lossis tawm, yog ntev li thaum ntsaws nyob rau hauv lub hwj huam, lub siab qhov hluav taws xob tiam hluav taws xob yog ib txwm nyob hauv kev ua hauj lwm hauv lub xeev, lub teeb nruab nrab yog ib txwm zwm. Uas yog hais tias, qhov khoom siv hluav taws xob ua hluav taws xob tsis yog tswj los ntawm kev hloov, uas yog, lub rooj tsav xwm tseem ceeb xa mus rau high voltage, thiab lub teeb liab hloov ntawm lub Circuit Court tawm ntawm kev tswj hwm. Qhov pib hloov ntawm lub ntsiab pawg microprocessor feem ntau tswj tau los ntawm ntau tus neeg sab nraud, yog li qhov txhaum yuav yog qhov kev puas tsuaj ntawm tus cim thwj cim uas tswj cov kev taw qhia pib.

Tshawb nrhiav ntawm lub vijtsam dawb ntawm qhov screen

1. Ua ntej, disassemble lub plhaub ntawm LCD LCD npo, mam li xyuas seb qhov interface ntawm qhov screen kab yog xoob los yog tsis txuas. Tom qab kuaj xyuas, txoj kab txuas nrog txhua zaus.

2, ces qhib lub laptop fais fab, thiab siv cov multimeter los ntsuas lub hwj huam hluav taws xob ntawm qhov screen kab interface yog qhov qub. Yog tias qhov kev pab cuam hluav taws xob yog qhov qub, mus rau theem thib 5; yog tias tsis muaj dab tsi, ces xyuas seb cov ntawv kho mob uas tsis nyob ze ntawm txoj kab ntsuas kab mob los yog qhov kev tuav pov hwm kas moos yog qhib los yog puas ntsoog. Yog tias puas, hloov cov khoom puas.

3. Yog hais tias qhov kev tiv thaiv kev ruaj ntseg lossis qhov khawm qhov nyob ze ntawm qhov kev tawm ntawm lub voj voos, qhov hluav taws xob ntawm qhov hluav taws xob ntawm qhov DC-DC voltage hloov vajvoog rau LCD LCD yuav raug kuaj xyuas seb qhov voltage yog dab tsi. Yog tias cov zis hluav taws xob tsis zoo, khij lub hwj huam tuaj ntawm qhov kev tiv thaiv, PWM maub los, hloov lub raj, kauj hlaub, lim capacitor thiab lwm yam khoom, thiab hloov cov khoom puas.

4, yog tias DC-DC voltage conversion circuit output voltage yog dab tsi, ces DC-DC voltage conversion circuit tso tawm rau qhov screen kab interface nruab nrab ntawm cov capacitor puas thiab lwm yam, kos thiab hloov cov khoom puas.

5. Yog hais tias qhov ntsuas hluav taws xob ntawm qhov screen kab interface zoo li qub, mam li xyuas cov teeb meem sij hawm hauv lub vaj huam sib luag hauv LCD thiab seb puas tsav puas ntsiag tsis zoo. Yog hais tias tsis meej, qhov teeb liab tawm, lub teeb liab tawm thiab qhov hluav taws xob qhov hluav taws xob ntawm lub nti tawm ntawm lub teeb liab raug tshawb xyuas los txiav txim seb tus tsav nti puas los yog tsis. Yog tias nws puas lawm, hloov nws. Ntawm qhov kev nkag siab ntawm saum toj no, ntawm LCD kua Crystal display zaub dawb screen phenomenon tsis yog qhov kev nkag siab, qhov khau raj npo dawb npo ua cov vijtsam duab kho kom yooj yim rau cov tswvcuab paub txog cov Vajtse Circuit Court, qhov kev ruaj ntseg tshaj plaws yog los sib piv cov neeg ua hauj lwm pab koj nrhiav qhov laj thawj thiab daws