A. los kho lub LCD yuav tsum kawm los txiav txim seb qhov twg yog qhov txhaum, qhov no yog thawj kauj ruam.Cov hauv qab no yuav tham txog qhov ua txhaum loj thiab qhov chaw ntawm LCD TV kev txiav txim.
1: Tsis muaj duab tsis muaj suab, lub teeb lub zog flashes rau hauv lub teeb tas li, lub vijtsam flashes lub teeb dawb thaum lub sijhawm fais fab.Qhov kev ua tsis tiav no feem ntau yog backlight tsav tsheb puas.Tab sis kuj tau ntsib nyob rau hauv kev saib xyuas ntawm qhov screen yog lub teeb puas.
2: Tom qab lub sijhawm ntawm lub zog ntawm lub vijtsam (mosaic), lub suab zoo li qub.Qhov tshwm sim no yog thawj zaug yog lub rooj tsav xwm digital tsis zoo (dhau lub qhov tsis ua haujlwm lossis IC kev sib cuag tsis zoo).Qhov thib ob yog kev sib cuag tsis zoo nyob rau hauv lub tshuab kev sib txuas.
3: khau raj peb tsis, lub hwj chim teeb tsis teeb.Thawj yog lub rooj tsav xwm tsis zoo, qhov thib ob yog CPU feem ntawm kev ua haujlwm tsis zoo li qub.
4: Lub teeb flashing tsis tuaj yeem qhib: CPU tsheb npav ua haujlwm tsis zoo lossis khau raj IC (BIOS) phem, "BIOS" IC thiab kev sib cuag tsis zoo ntawm CPU.
5: kub kub: peb pom lub tshuab hauv cov neeg siv khoom lub tsev tsis muaj ntau tshaj li phab ntsa-mounted thiab pedestal hom ob qhov kev tso kawm, tab sis kuv tus kheej kev soj ntsuam, tib lub qauv thiab lub sij hawm yuav khoom tib lub tshuab, phab ntsa-mounted tshuab ntau tshaj qhov yuav tsis ua hauj lwm. ntawm cov pedestal hom, thiab tib yam tsis ua hauj lwm thaum ntxov 1-2 xyoo, yog li nws zoo nkaus li, muaj feem xyuam rau qhov kub thiab txias, nyob rau hauv cov ntaub ntawv no, kuv kho lub tshuab yuav nruab ob lub computer kiv cua los xyuas kom meej tias lub warranty lub sij hawm yuav tsis tas. mus rau qhov kub thiab txias thiab rov qab kho.
6: corrosion kuj: ntxiv rau cov lus hais saum toj no, nyob ze ntawm lub tshuab ua noj ua haus tshaj li lwm cov cav tov tsis ua hauj lwm, thiab lawv cov teeb meem yog muab los ntawm corrosion ntawm cov hlau nto ntawm cov connectors, thiab txawm ua rau ob lub qhov muag tooj liab. corrosion, lub hauv paus ntawm qhov tshwm sim no yog, ntawm chav kawm, qhov teeb meem ntawm huab cua zoo, rau kev kho ntawm qhov teeb meem no, kuv siv txoj kev sealing nrog kub-conductive silicone roj thiab tsis cuam tshuam rau lub tshav kub dissipation, ntawm chav kawm, cov connectors. Cov hlau yuav tsum tau siv nrog roj hmab kom huv si.
7: Yuav luag txhua qhov screen yuav tshwm dub band, teeb meem kab teeb, kho qhov txhaum ua ntej kom muaj kev kho, tom qab ua tiav kev kho sim siv cov roj thermal coated nrog ntau cov ntsiab lus hauv COF module IC vim qhov teeb meem no kuj tshwm sim. los ntawm qhov kub thiab txias.
LCD TV ntau yam tsis ua haujlwm thiab kho txoj hauv kev (LCD TV kaum qhov ua tsis tiav)
Qhov thib ob, lub tshuab ua haujlwm thiab qhov tshwm sim txhaum cai thiab kev daws teeb meem
1: Raws li tau hais los saum toj no, qhov teeb meem ntawm qhov screen (dub band, ci kab) yog qhov feem ntau, qhov xwm txheej no feem ntau yog qhov tsis muaj kev saib xyuas tsis tuaj yeem ua, tsuas yog tso siab rau cov cuab yeej siv thiab kev saib xyuas.
2: LG screen Cheebtsam ntawm lub rooj tsavxwm tsis yog feem ntau qhov tsis zoo ntawm qhov tshwm sim yog tag nrho ntawm kev tshuaj ntsuam lwm cov ntsiab lus, tab sis kuj muaj qee qhov muaj tag nrho ntawm cov kab ntsug ntsug, qhov tsis ua haujlwm no tuaj yeem hloov tau ob lub rooj tsav xwm tsis zoo (txawm tias yog sab phem, tab sis. kuj mus yuav ib khub neeg yuav tsis muag ib leeg rau koj) los yog ntsuas seb daim IC phem, hloov tau.
3: Tsis hais lub vijtsam twg, Y pawg thawj coj saib yog nyob rau hauv lub tshuab PDP hauv qhov muaj feem cuam tshuam tsis zoo rau qhov thib ob, nws feem ntau puas tom qab qhov tshwm sim yog qhov screen, tag nrho cov xim dots, lossis vim yog luv luv Circuit Court thiab tiv thaiv hluav taws xob, VS los yog VA voltage tam sim ntawd, tab sis tsis mus txog qhov screen voltage tus nqi ntawm lub rooj tshwj xeeb yog vim li cas yooj yim rau phem, kuv tsis paub yog vim li cas.
4: X pawg thawj coj kuj tseem yog lub tshuab PDP feem ntau cov khoom tsis zoo, nws qhov kev ua tau zoo rau kev tiv thaiv khau raj (Fujitsu screen feem ntau), thiab ci ntsa iab.
5: Tus nqi tsis ua haujlwm ntawm lub rooj tsavxwm logic tsis qis, hauv PDPLCD muaj ntau dua, nws qhov kev ua haujlwm feem ntau yog lub teeb pom kev zoo, tab sis yuav tsis muaj cov cim, tsis muaj duab, lossis cov duab tsis sib xws chaotic xim, tsis muaj xim, duab tsis zoo, thiab lwm yam. Muaj qee qhov qhib tsis tau.
6: LCD ntau dua qhov ua tsis tau zoo yog cov teeb meem tshuaj ntsuam, cov kab tsaus nti, kab, yog qhov tshwm sim ntau tshaj plaws, cov ntsiab lus no tuaj yeem ua tiav raws li cov teeb meem tshuaj ntsuam, qee qhov yuav tsum muaj kev kho kom kho, qee qhov vim qhov kub thiab txias, ua rau COF thiab kev sib txuas ntawm lub vijtsam. taw tes ntawm ACF tawm ntawm qhov tshwm sim no tuaj yeem kho nrog lub tiaj tus hlau hauv qab lub ncoo rwb thaiv tsev xov xwm kub txoj kev
7: LCD tshuab, lub vijtsam tivthaiv inverter Circuit Court (high-voltage board) yog qhov txhaum-nrawm, tshwm sim raws li lub teeb rau, tab sis ib pliag tsis muaj lub teeb, tab sis muaj suab, (tshwj tsis yog SHARP), tab sis lub teeb lub teeb aging. thiab kev puas tsuaj yuav ua rau muaj kev tiv thaiv high-voltage board, los txiav txim seb lub teeb lub teeb los yog lub high-voltage board nws tus kheej yog phem, tshem tawm cov high-voltage board nyob rau hauv nruab nrab tus nqi ntawm lub comparative tawm tswv yim Circuit Court.
8: Ntau tus phooj ywg nug yuav ua li cas tuav lub SHARP LCD, qhov tseeb, thiab cov LCD zoo ib yam li nkag mus rau cov ntawv qhia zaub mov, koj tuaj yeem pom cov khoom yuam kev muaj cov lej txhaum cai, qee qhov ncaj qha rau tus lej xoom, qee qhov yuav tsum tau kho qhov sib xws. qhov chaw ntawm qhov txhaum.
Thib peb, LCD TV backlight kev txiav txim txhaum cai
1. lub backlight nyob rau hauv AC lub hwj chim-on instant LCD npo lub teeb tawm me ntsis, lub sij hawm no, lub suab nrog, tej thaj chaw deb tswj, vaj huam sib luag khawm tswj lub luag hauj lwm yog ib txwm tshwm sim no tshwm sim los ntawm backlight circuit tiv thaiv, vim li cas rau lub backlight booster. board fais fab mov txawv txav rau CCFL backlight Circuit Court, yog ib lub backlight raj qhib Circuit Court (feem ntau rau lub backlight booster board teeb lub qhov (socket) qhib solder los yog lub qhov (socket) tsis tau muab tso nruj nreem los ntawm kev tiv thaiv Circuit Court) los yog ib tug tawg teeb yuav ua rau cov saum toj no tsis ua hauj lwm.
2. lub backlight hloov tsis hloov, nrog lub suab, cov chaw taws teeb tswj, vaj huam sib luag khawm tswj yog ib txwm ua txhaum no yuav tsum kuaj xyuas cov haujlwm hauv qab no.
(1).lub backlight booster circuit fais fab mov, ib qho screen loj rau 24 volts, tsawg heev nrog 120 volts, me me screen feem ntau yog 12 volts.
(2).CPU tswj Circuit Court output backlight booster board oscillator ua hauj lwm hloov tswj teeb liab, ntau rau theem siab pib, ntau 3V-5V teeb teeb pom kev zoo tswj teeb liab yog hais tias cov saum toj no ua hauj lwm tej yam kev mob muaj, ces koj muaj peev xwm hloov lub backlight booster board, yog hais tias tus hloov backlight booster. board tsis ua hauj lwm raws li thaum pib, feem ntau yog rau lub LCD screen Cheebtsam nyob rau hauv lub backlight raj puas.
3. Thaum lub teeb ci ntsa iab thiab tsis ci, nws yog ib qho uas lub qhov (socket) ntawm lub backlight booster board muaj kev sib cuag tsis zoo nrog lub teeb, thiab lub backlight fais fab mov yog siab lossis qis.
Post lub sij hawm: Aug-04-2022