Mukayatsa TV, pamakhala phokoso koma chinsalu sichimawonetsa – zomwe zimayambitsa ndi zothetsera

Owonera ena amakumana ndi mfundo yakuti TV ikayatsidwa, pamakhala phokoso, koma chophimba sichimawonekera. Zomwe zimayambitsa kusweka, momwe mungathanirane nazo komanso pamene kuli bwino kudalira mbuye, zidzakambidwanso. Chifukwa zitha kukhala kulephera kwa mapulogalamu komanso kulephera kwa Hardware.

Zifukwa zomwe muyatsa TV pali phokoso, koma chophimba sichimawonekera

Olandila ma TV amakono ndi zida zovuta zaukadaulo zomwe zimatha kuwonongeka pazifukwa zosiyanasiyana. Nthawi zina pamakhala zinthu zomwe palibe chithunzi pa TV, koma pali phokoso. Komanso, magwiridwe antchito a chipangizocho amasungidwa – mutha kusintha mayendedwe ndikusintha voliyumu. Ngati chithunzi pa TV mbisoweka, koma pali phokoso, izi zikhoza kuyambitsidwa ndi zifukwa zingapo.
Nthawi zambiri chiwonetsero cha TV chimasiya kuyaka konse. Koma palinso zosokoneza pazenera monga:

• kuwoneka kapena kung’ambika;
• chizindikirocho chimakhala chapakatikati;
• mzere wopingasa wowala umawoneka pambali;
• magetsi oyaka;
• akuwonetsa chithunzi chokhala ndi mabwalo;
• chofiira kapena chobiriwira chobiriwira chimawoneka pambali pa contour;
• mikwingwirima yoyima yamitundu yambiri imawonekera;
• chithunzicho chimakhala chovuta kuchiwona.

Choyamba muyenera kudziwa: TV sikuwonetsa, koma phokoso ndilo vuto. https://cxcvb.com/question/polosy-na-kartinke

Kutaya kukhudzana

Vuto loterolo likhoza kuchitika chifukwa chakuti makutidwe ndi okosijeni wathunthu kapena pang’ono amalumikizana. Kuti muzindikire gwero la vuto, ndikwanira kuyang’ana zolumikizira. Ngati kuipitsidwa kapena ma oxides apezeka pamapepala olumikizirana, ayenera kuchotsedwa. Pambuyo pake, mutha kuyikanso chingwe mu socket ya seti-pamwamba bokosi ndi wolandila TV. Njirayi ikuchitika mosamalitsa ndi zida zochotsedwa pamagetsi. https://cxcvb.com/kak-podklyuchit/cifrovuyu-pristavku-k-televizoru.html Chifukwa china chimene TV sichimawonetsa pamene pali phokoso ndipo palibe chithunzi ndi kuwonongeka kwa makina ku chingwe chogwirizana. Ngati pali ma kinks kapena creases, ndiye kuti ma cores omwe amanyamula pakali pano amalephera. Musanayambe kukonza vutoli, kuyanika bwino kwa waya kuyenera kuchitidwa. Ngati pali kuwonongeka kowonekera, chingwecho chiyenera kusinthidwa. Pankhaniyi, ndikofunika kulingalira kugwirizanitsa ndi chitsanzo cha zipangizo zolumikizidwa. Chifukwa chake, muyezo wa HDMI umapezeka m’mitundu ingapo. [id id mawu = “attach_5137” align = “aligncenter” wide = “424”]
Chingwe cha HDMI[/ mawu]

Ngati kuwonongeka kwapezeka, tikulimbikitsidwa kuti tikonze. Izi zimagwiranso ntchito pazitsulo zotayirira, mapulagi okhala ndi zotchingira zowonongeka ndi m’mphepete mwake, komanso mawaya okhala ndi zopindika komanso zopindika. Ndikofunika kulingalira kuti kugwiritsa ntchito zipangizo mu mawonekedwe awa kungayambitse dera lalifupi komanso zovuta kwambiri.

Mavuto a mphamvu

Ngati TV sikuwonetsa, koma pali phokoso, izi zikhoza kuchitika chifukwa cha kutsika kwa magetsi. Chifukwa cha kuchuluka kotereku, kuwonongeka kosafunikira nthawi zina kumachitika. Komanso, ma subsystems osinthira ma voltage amalephera m’njira yofulumira. Izi zikachitika, chinsalucho chimakhala chakuda pamene chipangizocho chiyatsidwa. Koma pakangopita nthawi yochepa ya wolandila TV, chithunzicho chidzawonekerabe. Izi zikutanthauza kuti magetsi sangathe kupereka mphamvu zokwanira kuti zida za hardware ziyambe mwachizolowezi. Kuchita kukonza kwake paokha ndi okhawo omwe ali ndi luso loyenera. Nthawi zina, mbuyeyo amathandizira kukonza zida zamagetsi. Koma mukhoza kupanga matenda oyamba nokha. Pankhaniyi, padzakhala kofunika kuchotsa particles fumbi ndi dothi madipoziti pa bolodi.
Ngati pali zotupa, ndiye kuti ziyenera kusinthidwa ndi zatsopano. Mitundu ina yoyesera idzafuna kugwiritsa ntchito zida zoyezera zamagetsi.

Kuwonetsa matrix

Pakakhala phokoso, koma palibe chophimba chakuda pa TV, chifukwa chake chikhoza kukhala mu matrix. Chigawochi chili ndi zigawo zingapo:

• wosanjikiza wa maselo amadzimadzi a kristalo omwe amawongolera kuwonekera;
• machitidwe owunikira omwe ali ndi dalaivala yemwe amapereka magetsi;
• kuzungulira kwa kufalitsa deta;
• machitidwe osinthira chizindikiro.

Chimodzi mwazinthu zomwe zatchulidwazi zitha kulephera. Ichi ndi chifukwa chofala chomwe TV ili ndi phokoso koma palibe chithunzi. Kuwonongeka kwa matrix a cell nthawi zambiri kumachitika chifukwa cha kugwedezeka, kusintha kwadzidzidzi kutentha, kuchulukirachulukira ndi zinthu zina zomwe zimakhudza.
Ngati zolepherazo zidakhala zosafunikira, ndiye kuti mawanga ndi mikwingwirima zimawonekera pazenera. Mtundu wawo ukhoza kukhala wakuda kapena wakuda (wolakwika poyerekezera ndi chithunzi chonse). Ngati ma cell ambiri awonongeka, chiwonetserocho chidzazimitsidwa kwathunthu. Nthawi zina, matrix amawonongeka chifukwa chafupikitsa. Zingwe za data ndi kachingwe kakang’ono ka pulasitiki komwe kumayikidwamo ma conductive tracks. Zinthu zoterezi ndizosavuta kuwononga. Nthawi zina, zingwe zimatuluka kuchokera ku zolumikizira chifukwa cha kugwedezeka. Komabe, soldering yawo idzakhala yotsika mtengo kusiyana ndi kusintha matrix.
Zotsatira zake, pali phokoso, koma palibe chithunzi, kapena chithunzicho chimayamba kufalitsidwa ndi kusokoneza. Komanso, mavuto ndi loop ya data amatha kuwonekera motere:

• mafunde ndi zosokoneza zina zimawonekera nthawi ndi nthawi pa TV;
• kusintha kwamitundu kumawonekera – pazigawo zamtundu uliwonse kapena pachiwonetsero chonse;
• chithunzicho chizimiririka, koma chikhoza kubwereranso ngati mutenga nkhani ya TV mopepuka.

https://cxcvb.com/texnika/televizor/problemy-i-polomki/pomexi-na-televizore.html Ngati kukhudzana kwatayika pamayendedwe owongolera a loop, chithunzicho chimasowa kwathunthu. Ngati chithunzicho chizimiririka pa TV chifukwa cha izi, pali zochepa zomwe zingatheke: kudzikonza sikuvomerezeka pankhaniyi. Gawo lowonongeka likhoza kusinthidwa ndi katswiri wodziwa zambiri. Ngati chinsalu ndi chakuda, ndiye kuti ndi bwino kuyang’ana dongosolo la backlight, lokhala ndi tochi. Ngati muwonetsa pawonetsero, ndipo chithunzicho chidzawoneka, ndiye chifukwa chake. Kuwala kwa backlight kungathe kukonzedwa, komabe, m’malo mwa zigawo zowotchedwa, muyenera kusokoneza nkhaniyo, yomwe imasiyidwa kwa mbuye.
Gwero lotsatira la vutoli ndi ma inverter ndi mayunitsi osesa. Nthawi zambiri amaperekedwa mu mawonekedwe a ma modules osalekanitsidwa. Zolakwa mwa iwo zimayambitsa kupotoza kosiyanasiyana kwa fano, kuphatikizapo kutaya kwathunthu. Ma inverters owonongeka amadzipatsa mawonekedwe a chifaniziro chozizira komanso kufiyira pambuyo poyatsa chophimba. Podziwa momwe mungagwirire chitsulo cha soldering, mukhoza kusintha ma modules osweka. Kapena pitani ku malo othandizira. Chigawo china cha hardware ya chipangizo cha televizioni ndi pulosesa ya kanema. Zolephera zomwe zimachitika mmenemo zimayambitsa kusokoneza pazenera. Mitundu imayamba kuwonekera molakwika. Ndipo izi sizikutanthauza chip wosweka nthawi zonse. Kugwiritsa ntchito kolakwika kwa purosesa ya kanema kumatha kuchitika ngati ma solder pa bolodi awonongeka chifukwa cha kugwedezeka kapena kugwedezeka.
Kukonza gawoli n’kosatheka – m’malo mwake ndikofunikira. Malo ogwirira ntchito amawunikira mwatsatanetsatane, amabwezeretsanso mfundo zogulitsira. Kunyumba, izi sizingagwire ntchito, chifukwa zida zapadera ndi luso zimafunikira.

Zomwe zingatheke kunyumba

Kuti mupange kukonzanso kwapang’ono komanso kosavuta kwa TV pamaso pa phokoso komanso popanda chithunzi, popanda chidziwitso chapadera, mutha kuchita izi:

1. Yatsani ndikuzimitsa cholandirira TV . Izi zithandizira kukonza zolakwika za mapulogalamu.
2. Lumikizani zida pamagetsi . Kenaka yang’anani kukhulupirika kwa zingwe, kugwirizana kolondola ndi kukhalapo kwa kuipitsidwa pamwamba pa ojambula.
3. Masulani voliyumuyo kuti ifike pamlingo waukulu kwambiri ndi kuibwezeranso pamalo omveka bwino . Izi zidzalola kuti magetsi azikhala ndi mphamvu zokwanira.

Kuonjezera apo, tikulimbikitsidwa kuti tipeze choyimitsa magetsi ngati chithunzi pa TV chikutha pamene chipangizo champhamvu chamagetsi chikuyatsidwa. Chifukwa imatha kuwotcha ma capacitors. Panthawi imodzimodziyo, chinsalu chimayamba kukhala chopanda kanthu, ndipo chithunzicho chikuwonjezeka. Ngati chinthu chotupa chikapezeka, muyenera kuchisintha pamodzi ndi fusesi, yomwe imasiyidwa kwa katswiri. Ngati TV ikutembenukira, koma palibe chithunzi ndipo chinsalu chakuda, ndiye kuti muyenera kuyang’ana kugwirizana ndi chingwe. Mukamagwiritsa ntchito “tulips”, waya womwe umatumiza chizindikiro cha kanema sungathe kulumikizana bwino ndi cholumikizira. Zotsatira zake, chiwonetserocho chimakhala chopanda kanthu, koma chizindikiro cha audio chimakhalabe. Ndikoyeneranso kuyang’ana chingwe chamagetsi kuti chilowetsedwe mwamphamvu.

Eni ake a TV ena atulukira njira yachilendo yothetsera vutoli. Chofunikira chake ndikuwonjezera kuchuluka kwa voliyumu mpaka chizindikiro chachikulu. Pambuyo pa masekondi angapo, chithunzicho chiyenera kuwoneka. Njirayi idzagwira ntchito ngati mutalephera kamodzi.

Komabe, choyamba muyenera kuonetsetsa kuti TV chophimba ntchito bwino. Izi zikuwonetseredwa ndi splash screen yomwe imawonekera ikayatsidwa. Ngati ikusowa ndipo chiwonetserocho chimakhalabe mdima, ndiye kuti chimodzi mwa zigawo zamkati za wolandila TV zomwe zikuyenera kuwonetsa chithunzicho zasweka.

Momwe mungavumbulutsire Samsung TV

Nthawi zina zimachitika kuti palibe fano pa Samsung TV, koma pali phokoso. Pankhaniyi, tikulimbikitsidwa kuyesa chizindikiro cha kanema potsatira njira zingapo:

1. Pa remote control, dinani batani la Home.
2. Wonjezerani gawo la “Zikhazikiko”.
3. Sankhani chinthucho “Thandizo”, ndiye – “Kudzifufuza”.
4. Tsopano gwiritsani ntchito “Run Image Test”.

Pambuyo pozindikira mavutowo, ndikofunikira kuyesa kukonza vutoli motsogozedwa ndi malingaliro a wopanga. Zotsatirazi ndi zosankha chifukwa pali phokoso pa Samsung TV, koma palibe fano:

Kuchokera apa zikutsatira kuti zowonongeka zambiri zimatha kukhazikitsidwa ndi manja. Kukonza Samsung TV pamaso pa phokoso ndipo palibe fano kunyumba n’zotheka ngati disassembly mlandu si chofunika. Kupanda kutero, ngati kukonza kwa zosintha sikuthandiza, muyenera kusintha gawo lolakwika. Ngati mayeso omwe ali pamwambawa sakuwonetsedwa, ndiye kuti cholakwikacho ndi chamkati. Ndiye muyenera kuchita diagnostics oyenerera ndi unsembe wotsatira wa gawo latsopano.

Palibe chithunzi pa LG TV

Ngati pali phokoso pa LG TV, koma palibe fano, ndiye choyamba muyenera kudziwa chifukwa cha kulephera. Kulephera kungakhale kwamtundu wa pulogalamu kapena kuchitika chifukwa cha kulephera kwa gawo lamkati. Mavuto ena amakonzedwa kunyumba. Wogwiritsa ntchitoyo ayenera kuyang’ana zowonera kanema wawayilesi ndi zida zake. Ngati pali kufalitsa kolakwika kwa chithunzi kapena kuphwanya kutulutsa kwamtundu, tikulimbikitsidwa kuchita izi popanda kusokoneza chipangizocho:

1. Zimitsani chipangizo cha TV ndikuchotsa pulagi pazitsulo, ndikuzisiya kwa mphindi 15-20. Izi zidzakuthandizani kuthana ndi kuwonongeka kwadongosolo.
2. Zimitsani njira yopulumutsira mphamvu ngati chithunzicho chikuwunikira nthawi zonse ndipo kuwala kwachepa.
3. Ngati chithunzicho chawirikiza kawiri kapena mdima, njira ya Trumotion iyenera kuyatsidwa.
4. Ngati chithunzicho chachepetsedwa, tikulimbikitsidwa kuyang’ana ndikusintha mawonekedwe owala.
5. Ngati mzere wamadontho ukuwoneka, sankhani gawo la 16:9.

Komanso, ngati pali chophimba wakuda pa LG TV, koma pali phokoso, muyenera kuonetsetsa kuti chingwe TV set-pamwamba bokosi ndi mawaya olumikizidwa kwa izo zikugwira ntchito. Chifukwa chake, ndikofunikira kuyang’ana chingwe cha mlongoti ndi chingwe cha HDMI. Pali kuthekera kuti vuto lingakhale kumbali ya wothandizira.
Zimalimbikitsidwanso kuyang’ana mawaya a kinks ndi creases, komanso kuyang’ana kukhulupirika kwa zigawo zogwirizanitsa. Mukhozanso kuzimitsa cholandirira TV, kukokera mapulagi kunja kwa madoko ndikulowetsanso. Ngati zosankha zomwe zili pamwambazi sizinagwire ntchito, izi zikutanthauza kuti kulephera kumapezeka mkati mwa wolandila. Ndiye muyenera kulankhulana ndi kampani service center. Zowonongeka kwambiri ndi izi:

• magetsi athyoka: chophimba cha TV sichiwala;
• capacitor inawotchedwa: chiwonetserocho chimawala ndipo chimatuluka mwamsanga;
• matrix ali kunja kwa dongosolo: pali backlight, koma fano si wangwiro;
• chingwe cha matrix ndi cholakwika: chithunzicho chimatha nthawi ndi nthawi;
• chithunzicho chinasowa pa LG TV, koma pali phokoso: inverter yasweka;
• kuwala kwambuyo kwawonongeka: ma ripples kapena chithunzi chonyezimira chikuwoneka;
• kuwonongeka kwa purosesa ya kanema: chithunzicho chachedwa, kusokonezeka kwa mtundu kumawonekera;
• Kulephera kwa decoder: mikwingwirima yayikulu imawonekera pachiwonetsero.

Mtengo wokonza TV

Ngati hardware ikulephera, muyenera kugwiritsa ntchito ntchito za master. Kupatula apo, magetsi kapena amplifier amakanema amatha kusweka.
Kuphatikiza apo, nthawi zambiri chifukwa chake chimakhala mu backlight yolakwika, chingwe cha matrix kapena chowongolera nthawi. Mavuto a Hardware nthawi zambiri amachitika chifukwa cha kutsika kwamagetsi, kutupa kwa ma capacitor, kapena kutenthetsa bwino kwa zinthu. Kuti azindikire vuto, m’pofunika kupereka chipangizo ndi kuchita disassembly. Koma izi zimafuna luso linalake logwira ntchito zamakono. Ndikofunika kukumbukira kuti kuchitapo kanthu mopanda ntchito kungapangitse zipangizozo kulephera kwamuyaya, zomwe zimafuna kukonzanso ndalama.

Pali phokoso koma chithunzi pa TV chapita, chifukwa chiyani izi zikuchitika, zifukwa zake ndi chiyani: https://youtu.be/n7StZYo-rD0 Izi ndi zifukwa zazikulu zomwe zimagwirizanitsidwa ndi chakuti TV ili ndi anataya chithunzicho, koma pali phokoso. Mutha kuyang’ana panokha kukhulupirika kwa mawaya ndi kulimba kwa mapulagi. Komanso kuyesa chithunzi ndikusintha magawo opereka utoto. Ngati izi sizikuthandizani, ndiye kuti muyenera kumvetsera chikhalidwe cha kupotoza kwa chithunzicho. Izi zidzathandiza kudziwa kuti ndi ziti zomwe zili mkati zomwe ziyenera kukonzedwa. Disassembly wa mlandu akhoza kuchitidwa ndi mbuye oyenerera.