A. kukonza LCD ayenera kuphunzira kudziwa mbali yomwe ili yolakwika, iyi ndi sitepe yoyamba.Zotsatirazi zidzalankhula za zolakwika zazikulu ndi magawo a chiweruzo cha LCD TV.
1: palibe chithunzi palibe phokoso, nyali yamagetsi imawunikira kuwala kosalekeza, chinsalu chimawunikira kuwala koyera panthawi yamagetsi.Kulephera uku ndiko makamaka kuwonongeka kwa bolodi la backlight.Koma anakumana mu yokonza chophimba ndi nyali kuwonongeka.
2: Pambuyo pa nthawi ya mphamvu pazenera (mosaic), phokoso ndi lachilendo.Chodabwitsa ichi ndi choyamba ndi bolodi yoyipa ya digito (pabowo sikugwira ntchito kapena kukhudzana ndi IC sikuli bwino).Chachiwiri ndi kukhudzana koyipa mkati mwa kugwirizana kwa makina.
3: jombo lachitatu ayi, kuwala kwamphamvu sikuyatsa.Yoyamba ndi bolodi yoyipa yamagetsi, yachiwiri ndi gawo la CPU lantchitoyo si lachilendo.
4: Kuwala kowala sikungayatse: Ntchito ya basi ya CPU si yachilendo kapena pulogalamu ya boot IC (BIOS) yoyipa, "BIOS" IC komanso kusagwirizana pakati pa CPU.
5: kutentha kwakukulu: tikuwona makina omwe ali m'nyumba yamakasitomala salinso kuposa kuyika khoma ndi chopondapo, koma kuyang'ana kwanga, chitsanzo chomwecho ndi nthawi yogula makina omwewo, makina opangidwa ndi khoma kuposa mwayi wolephera. wa mtundu pedestal, ndi kulephera yemweyo komanso oyambirira zaka 1-2, kotero zikuoneka, chikugwirizana ndi kutentha, mu nkhani iyi, ine anakonza makina adzakhala anaika awiri mafani kompyuta kuonetsetsa kuti nthawi chitsimikizo sadzakhala chifukwa. ku Kutentha kwakukulu ndikubwerera kukonzanso.
6: kukana dzimbiri: kuwonjezera pa holo ya konsati yomwe yatchulidwa pamwambapa, pafupi ndi makina akukhitchini kuposa kulephera kwa makina ena, ndipo mavuto awo amachokera pakuwonongeka kwachitsulo pakati pa zolumikizira, ndipo amatsogolera kumaso amkuwa amkuwa. dzimbiri, gwero la chodabwitsa ichi, ndithudi, vuto la mpweya, kukonza zinthu, ndimagwiritsa ntchito njira yosindikiza ndi kutentha-conductive silikoni girisi ndipo sizimakhudza kutayika kwa kutentha, ndithudi, zolumikizira. Chitsulocho chizigwiritsidwa ntchito ndi mphira kuti chikhale choyera.
7: Pafupifupi nsalu yotchinga idzawoneka gulu lakuda, vuto la mzere wowala, kukonza vuto ili poyamba kuti likhale ndi zinthu zokonza, pambuyo pomaliza kukonza yesetsani kugwiritsa ntchito mafuta otenthetsera omwe amakutidwa ndi mfundo zambiri mu gawo la COF IC chifukwa vutoli limayambitsidwanso. ndi kutentha.
LCD TV zolephera wamba ndi kukonza njira (LCD TV khumi zolephera wamba)
Chachiwiri, makina wamba ndi vuto chodabwitsa ndi njira zothetsera mavuto
1: Monga tafotokozera pamwambapa, vuto lazenera (gulu lakuda, mzere wowala) ndilofala kwambiri, izi nthawi zambiri zimakhala popanda mikhalidwe yokonza, ingodalira luso lamakono ndi kukonza zinthu.
2: LG chophimba zigawo za bolodi zotchinga bolodi nthawi zambiri zoipa mbali ya chodabwitsa wodzaza zenera mfundo miscellaneous, komanso ena ali wodzaza mipiringidzo wokhazikika ofukula, kulephera izi akhoza m'malo awiri a bolodi bolodi (ngakhale mbali zoipa, koma Komanso kugula anthu awiri sikugulitsa imodzi kwa inu) kapena yesani chidutswa cha IC choyipa, m'malo mwake chingakhale.
3: Ziribe kanthu nsalu yotchinga, Y bolodi ndi PDP makina mkati mwa mwayi zoipa mlandu wachiwiri, izo zambiri kuonongeka pambuyo chodabwitsa ndi chophimba, wodzaza madontho amtundu, kapena chifukwa cha dera lalifupi ndi chitetezo mphamvu, VS. kapena VA voteji nthawi yomweyo, koma osafika pamtengo wamagetsi patebulo chifukwa chake ndizosavuta kuyipa, sindikudziwa chifukwa.
4: X board ndi makina a PDP omwe nthawi zambiri amakhala oyipa, magwiridwe ake achitetezo cha boot (Fujitsu skrini makamaka), komanso kuwala kwamdima.
5: Kulephera kwa bolodi la logic sikotsika, mu PDPLCD ndizofala kwambiri, ntchito yake imakhala yowunikira kwambiri, koma sipadzakhala zilembo, palibe chithunzi, kapena zolakwika zamtundu wachisokonezo, kusowa kwa mtundu, chithunzi cholakwika, etc. Ena sangathe kuyatsa.
6: LCD zolephera zofala kwambiri ndizovuta zowonekera, magulu amdima, mizere, ndizofala kwambiri, zoyambira izi zitha kufotokozedwa mwachidule ngati zovuta zowonekera, zina zimakhala ndi zinthu zokonzetsera, zina chifukwa cha kutentha kwambiri, zomwe zimapangitsa COF ndi kulumikizana kwazenera. mfundo ya ACF mu chodabwitsa ichi akhoza kukonzedwa ndi lathyathyathya chitsulo pansi PAD kutchinjiriza TV njira otentha
7: LCD makina, chophimba chigawo inverter dera (high-voltage bolodi) ndi mbali zolakwika, kuwonetseredwa ngati kuwala, koma kanthawi palibe kuwala, koma pali phokoso, (kupatula SHARP), koma kuwala chubu kukalamba. ndi kuwonongeka kudzatsogolera ku chitetezo chapamwamba chamagetsi, kuti mudziwe ngati chubu chowala kapena bolodi lapamwamba lokhalokha ndiloipa, kuchotsedwa kwa bolodi lapamwamba kwambiri pamtengo wamtengo wapatali wa gawo la ndemanga zofananitsa.
8: Anzanu ambiri amafunsa momwe angasungire SHARP LCD, kwenikweni, ndi LCD wamba ndi ofanana kulowa menyu yokonza, mutha kuwona zolakwika zomwe zili ndi zolakwika, zina mwachindunji paziro zero, ena amayenera kukonza zofananira. mbali za cholakwika.
Chachitatu, LCD TV backlight common fault chiweruzo
1. nyali yakumbuyo mu AC mphamvu-pa pompopompo LCD kuwala pang'ono pang'ono, pa nthawi ino, phokoso limodzi, ulamuliro wakutali, gulu kulamulira batani ntchito zachibadwa Izi zimachitika chifukwa cha backlight chitetezo dera, chifukwa cha backlight booster. bolodi magetsi abnormal kwa CCFL backlight circuit, ngati backlight chubu lotseguka dera (wamba kwa backlight booster board socket socket open solder kapena socket sanalowetsedwe mwamphamvu chifukwa cha chitetezo cha dera) kapena Nyali yosweka ingayambitse kulephera pamwambapa.
2. Kusintha kwa nyali yakumbuyo sikusintha, ndi mawu, chiwongolero chakutali, kuwongolera kwa batani ndi zachilendo vuto ili likufunika kuzindikira zinthu zotsatirazi.
(1).magetsi opangira ma backlight, skrini yayikulu yodziwika bwino ya 24 volts, ochepa kwambiri okhala ndi 120 volts, chophimba chaching'ono nthawi zambiri chimakhala 12 volts.
(2).CPU control circuit linanena bungwe backlight booster board oscillator work switch control siginecha, yofala pakuyambira kwapamwamba, chizindikiro chowongolera nyali cha 3V-5V ngati zinthu zomwe zili pamwambapa zilipo, ndiye kuti mutha kusintha bolodi lowonjezera la backlight, ngati chowonjezera chakumbuyo chakumbuyo. kulephera kwa bolodi monga poyambira, makamaka pazigawo zazithunzi za LCD pakuwonongeka kwa chubu chakumbuyo.
3. pamene kuwala kwambuyo kumakhala kowala komanso kosawoneka bwino, ndizofala kuti socket ya backlight booster board imakhala yosalumikizana bwino ndi nyali, ndipo mphamvu yamagetsi yamagetsi ndi yapamwamba kapena yochepa.
Nthawi yotumiza: Aug-04-2022