A. don gyara LCD ya kamata ya koyi sanin wane bangare ne ba daidai ba, wannan shine mataki na farko.Masu biyowa za su yi magana game da manyan laifuffuka da sassan hukunci na LCD TV.
1: babu hoto babu sauti, hasken wutar lantarki yana haskakawa cikin haske akai-akai, allon yana haskaka farin haske a lokacin kunnawa.Wannan gazawar galibi lalacewar allon direba ce ta baya.Amma kuma ya hadu a cikin kula da allon shine lalacewar fitilar.
2: Bayan lokacin iko akan allon (mosaic), sautin na al'ada ne.Wannan sabon abu shine na farko shine mummunan allon dijital (a kan rami baya aiki ko lambar sadarwar IC ba ta da kyau).Na biyu shine mummunan lamba a cikin haɗin injin.
3: boot uku a'a, hasken wutar lantarki baya haske.Na farko shine mummunan allon wutar lantarki, na biyu shine sashin CPU na aikin ba al'ada ba.
4: Ba za a iya kunna walƙiya haske ba: Aikin bas na CPU ba al'ada ba ne ko shirin taya IC (BIOS) mara kyau, "BIOS" IC da rashin daidaituwa tsakanin CPU.
5: high zafin jiki: mun ga inji a cikin abokin ciniki ta gida ne ba fiye da bango-saka da pedestal nau'i biyu jeri, amma na sirri lura, guda model da kuma sayan lokaci guda na'ura, bango-saka inji fiye da damar da gazawar. na nau'in pedestal, da kuma gazawar iri ɗaya kuma farkon shekaru 1-2, don haka ga alama, yana da alaƙa da zafin jiki, a cikin wannan yanayin, na gyara na'urar za a shigar da magoya bayan kwamfuta guda biyu don tabbatar da cewa lokacin garanti ba zai kasance ba. zuwa Babban zafin jiki kuma komawa gyara.
6: juriya na lalata: ban da dakin kide-kide da aka ambata a sama, kusa da injin dafa abinci fiye da sauran injunan gazawar, kuma matsalolin su suna samuwa ne daga lalatawar saman ƙarfe tsakanin masu haɗawa, har ma suna haifar da ido na jan ƙarfe mai fuska biyu. lalata, tushen wannan sabon abu shine, ba shakka, matsalar ingancin iska, don gyara wannan yanayin, Ina amfani da hanyar rufewa tare da man shafawa na silicone mai zafi kuma baya shafar yanayin zafi, ba shakka, masu haɗawa. Ya kamata a yi amfani da karfe tare da roba don shafa mai tsabta.
7: Kusan duk allon zai bayyana baƙar fata, matsala mai haske, gyara wannan kuskuren da farko don samun yanayin gyarawa, bayan kammala gyaran gyare-gyaren yi ƙoƙarin yin amfani da man shafawa na thermal mai rufi tare da ƙarin maki a cikin COF module IC saboda wannan matsalar ma ta haifar. ta yanayin zafi.
LCD TV gama gari da hanyoyin gyarawa (LCD TV goma gama gari)
Na biyu, na'ura gama gari da al'amarin kuskure da hanyoyin magance matsala
1: Kamar yadda aka ambata a sama, matsalar allo (baƙar fata, layin haske) shine mafi yawan, wannan halin da ake ciki shine gabaɗaya a cikin rashin yanayin kulawa ba zai iya yin ba, kawai dogara ga fasaha da yanayin kulawa.
2: LG allon abubuwan da ke cikin buffer board sau da yawa munanan sassan abubuwan da ke faruwa suna cike da maki daban-daban na allo, amma kuma wasu suna cike da sanduna a tsaye na yau da kullun, wannan gazawar na iya maye gurbin katakon buffer guda biyu (ko da wani gefe mara kyau, amma Hakanan don siyan mutane biyu ba za su sayar muku da guda ɗaya ba) ko auna wane yanki na IC mara kyau, maye gurbinsa zai iya zama.
3: Ko wanne allo, allon Y yana cikin na'urar PDP a cikin chances na mummunan lissafin na biyu, gabaɗaya ya lalace bayan abin da ya faru shine allon, cike da ɗigon launi, ko saboda gajeriyar kewayawa da kariyar wutar lantarki, VS. ko VA irin ƙarfin lantarki nan take, amma ba har zuwa allon ƙarfin lantarki na tebur takamaiman dalilin da yasa mai sauƙi zuwa mummunan ba, ban san dalili ba.
4: X allo kuma na'urar PDP ce sau da yawa munanan abubuwan gyarawa, aikinta don kariyar taya (Fujitsu allon galibi), da duhu duhu.
5: Rashin gazawar hukumar kula da hankali ba ta da yawa, a cikin PDPLCD sun fi yawa, aikinta galibi hasken allo ne, amma ba za a sami haruffa ba, ba hoto, ko rashin daidaituwar hoto mai hargitsi launi, rashin launi, hoto mara kyau, da sauransu. Wasu ba za a iya kunna su ba.
6: LCD mafi yawan kasawa na yau da kullun sune matsalolin allo, bandeji mai duhu, layi, shine mafi yawan gama gari, ana iya taƙaita waɗannan asali azaman matsalolin allo, wasu suna da yanayin gyara don gyarawa, wasu saboda yawan zafin jiki, yana haifar da COF da haɗin allo. batu na ACF daga wannan al'amari za a iya gyara shi tare da lebur baƙin ƙarfe a ƙasa da kushin rufi kafofin watsa labarai zafi hanya.
7: LCD inji, allon bangaren inverter kewaye (high-voltage board) wani ɓangarorin kuskure ne, wanda aka bayyana a matsayin haske a kan, amma wani lokaci babu haske, amma akwai sauti, (sai SHARP), amma tsufa tube tube. kuma lalacewa zai haifar da kariyar katako mai ƙarfi, don sanin ko bututun haske ko babban ƙarfin wutar lantarki da kanta ba shi da kyau, kawar da ma'aunin wutar lantarki a kan matsakaicin darajar da'irar ra'ayi mai mahimmanci.
8: Abokai da yawa suna tambayar yadda ake kula da SHARP LCD, a zahiri, kuma LCD na yau da kullun yana kama da shigar da menu na kulawa, zaku iya ganin abubuwan kuskuren akwai lambobin kuskure, wasu kai tsaye zuwa lambar sifili, wasu dole ne su gyara daidai. sassan laifin.
Na uku, LCD TV hukunce-hukuncen kuskure gama gari
1. hasken baya a cikin wutar lantarki na AC a kan hasken allo na LCD nan take kadan kadan, a wannan lokacin, sautin da ke tare da shi, kulawar ramut, ayyukan sarrafa maɓalli na panel al'ada ne na al'ada Wannan al'amari yana faruwa ne ta hanyar kariyar kewayawa na baya, dalilin da ya haifar da haɓakar hasken baya. wutar lantarki na allo ba daidai ba ne don da'irar hasken baya na CCFL, idan bututun baya na buɗe da'irar (na kowa don buɗaɗɗen fitilar fitilar buɗaɗɗen solder ko soket ba a saka ta sosai ta hanyar kariya ta kewaye) ko Fitilar da ta karye na iya haifar da gazawar da ke sama.
2. hasken baya baya canzawa, tare da sauti, kula da nesa, kula da maɓallin panel al'ada ne wannan kuskuren buƙatar gano yanayin aiki na gaba.
(1).samar da wutar lantarki mai haɓaka hasken baya, babban allo na gama gari don 24 volts, kaɗan kaɗan tare da 120 volts, ƙaramin allo gabaɗaya 12 volts.
(2).da CPU iko da'ira fitarwa backlight booster hukumar oscillator aiki canza iko siginar, gama gari don babban matakin farawa, ƙarin 3V-5V fitilar sarrafa siginar idan akwai sama da yanayin aiki yanayi, sa'an nan za ka iya maye gurbin backlight kara hukumar, idan maye backlight booster. gazawar hukumar kamar a farkon, galibi don abubuwan haɗin allo na LCD a cikin lalacewar bututun baya.
3. Lokacin da hasken baya ya yi haske ba haske ba, ya zama ruwan dare cewa soket ɗin fitilar allon ƙararrakin baya yana da mummunan hulɗa da fitilar, kuma wutar lantarki ta baya tana da girma ko ƙasa.
Lokacin aikawa: Agusta-04-2022