Uma uvula i-TV, kunomsindo kodwa isikrini asibonisi – izimbangela nezisombululo

Abanye ababukeli babhekene neqiniso lokuthi uma i-TV ivuliwe, kunomsindo, kodwa isikrini asibonisi. Izimbangela zokuwohloka, indlela yokubhekana nayo futhi uma kungcono ukwethemba inkosi, kuzoxoxwa ngakho. Njengoba kungaba kokubili ukwehluleka kwesofthiwe kanye nokwehluleka kwehadiwe.

Izizathu zokuthi kungani uma uvula i-TV kuzwakala umsindo, kodwa isikrini asibonisi

Izamukeli zethelevishini zanamuhla ziyimishini eyinkimbinkimbi yezobuchwepheshe engadiliza ngenxa yezizathu ezihlukahlukene. Ngezinye izikhathi kunezimo lapho kungekho khona isithombe ku-TV, kodwa kunomsindo. Ngaphezu kwalokho, ukusebenza kwedivayisi kuyagcinwa – ungashintsha amashaneli futhi ulungise ivolumu. Uma isithombe esiku-TV sinyamalala, kodwa kunomsindo, lokhu kungase kuqaliswe izici ezimbalwa.
Ngokuvamile isibonisi se-TV siyeka ukukhanya nhlobo. Kodwa kukhona nokuphazamiseka okunjalo esikrinini njengokuthi:

• ama-ripples noma ama-flashing;
• isignali iphakathi;
• umugqa ovundlile okhanyayo ubonakala ohlangothini;
• izibani ezikhanyayo;
• ukhombisa isithombe esinezikwele;
• i-edging ebomvu noma eluhlaza ibonakala eduze kwekhonta;
• kuvela imivimbo enemibala eminingi eme mpo;
• isithombe siba nzima ukusibona.

Okokuqala kufanele uthole: i-TV ayibonisi, kodwa umsindo yilokho inkinga. https://cxcvb.com/question/polosy-na-kartinke

Ukulahlekelwa ukuxhumana

Inkinga enjalo ingase yenzeke ngenxa yokuthi i-oxidation ephelele noma ingxenye yoxhumana nabo kwenzeka. Ukukhomba umthombo wenkinga, kwanele ukuhlola ngokubonakalayo izixhumi. Uma ukungcola noma imikhondo yama-oxides itholakala kumaphedi okuxhumana, azodinga ukususwa. Ngemva kwalokho, ungakwazi ukufaka kabusha ikhebula esokhethini ye-set-top box kanye nesamukeli se-TV. Le nqubo yenziwa ngokuqinile namadivayisi anqanyuliwe ekunikezeni amandla. https://cxcvb.com/kak-podklyuchit/cifrovuyu-pristavku-k-televizoru.html Esinye isizathu sokuthi kungani i-TV ingabonisi ngenkathi kunomsindo futhi singekho isithombe ukulimala komshini kukhebuli ehambisanayo. Uma kukhona ama-kinks noma ama-creases, khona-ke ama-cores aphethe manje ahluleka. Ngaphambi kokulungisa inkinga, ukuhlolwa okuphelele kocingo kufanele kwenziwe. Uma kunomonakalo obonakalayo, ikhebuli kuzodingeka ishintshwe. Kulesi simo, kubalulekile ukucabangela ukuhambisana nemodeli yemishini exhunyiwe. Ngakho-ke, izinga le-HDMI litholakala ezinguqulweni eziningana. [i-id yamagama-ncazo = “okunamathiselwe_5137” align = “aligncenter” wide = “424”]
Ikhebuli ye-HDMI[/caption]

Uma umonakalo utholakala, kunconywa ukuwulungisa. Lokhu kusebenza ezisekelweni ezivulekile, amapulaki ane-insulation eyonakele kanye nemiphetho ephukile, kanye nezintambo eziphukile futhi ezisontekile. Kubalulekile ukucabangela ukuthi ukusebenza kwemishini kuleli fomu kungabangela isifunda esifushane kanye nokungasebenzi kahle okukhulu.

Izinkinga zamandla

Uma i-TV ingabonisi, kodwa kunomsindo, lokhu kungase kubangelwe ukwehla kwamandla kagesi. Ngenxa yokwanda okunjalo, ngezinye izikhathi kwenzeka umonakalo ongabalulekile. Futhi, ama-subsystems okuguqulwa kwe-voltage ahluleka ngendlela esheshisiwe. Uma lokhu kwenzeka, isikrini sizohlala simnyama uma idivayisi ivuliwe. Kodwa ngemva kwesikhathi esifushane sokusebenza kwesamukeli se-TV, isithombe sisazovela. Lokhu kusho ukuthi ukunikezwa kwamandla akukwazi ukuletha amandla anele ukuze izingxenye zehadiwe zemishini ziqale ngokujwayelekile. Ukufeza ukulungiswa kwayo okuzimele kuphela kulabo abanamakhono afanele. Kwezinye izimo, inkosi izosiza ukulungisa izinto zamandla. Kodwa ungakwazi ukwenza ukuxilongwa kokuqala ngokwakho. Kulesi simo, kuzodingeka ukuthi ususe izinhlayiya zothuli nokungcola okufakwe ebhodini.
Uma kukhona ama-bulges, khona-ke kufanele ashintshwe amasha. Ezinye izinhlobo zokuhlola zizodinga ukusetshenziswa kwezinto zokukala zikagesi.

Bonisa i-matrix

Uma kunomsindo, kodwa kungekho sikrini esimnyama ku-TV, isizathu singase sibe ku-matrix. Le ngxenye ihlanganisa izingxenye eziningana:

• ungqimba lwamaseli e-crystal ewuketshezi anokukhanya okulawulwayo;
• izinhlelo zokukhanyisa ezinomshayeli ohlinzeka nge-voltage;
• iluphu yokudlulisa idatha;
• amasistimu okuguqula isignali.

Enye yezinto ezisohlwini ingase yehluleke. Lesi yisizathu esivamile esenza i-TV ibe nomsindo kodwa ingabi nasithombe. Ukulimala kwe-matrix yeseli kuvame ukubangelwa ukushaqeka, ukushintsha okungazelelwe kwezinga lokushisa, ukugcwala ngokweqile nezinye izinto ezinomthelela.
Uma ukwehluleka kuvele ukuthi akubalulekile, kuzovela amabala nemigqa esikrinini. Umbala wabo ungaba mnyama noma ube nemibala (okungalungile maqondana nesithombe sonke). Uma inani elikhulu lamaseli lonakele, isibonisi sizocisha ngokuphelele. Ezimweni ezingavamile, i-matrix yonakaliswa ngenxa yesifunda esifushane. Izintambo zedatha ziwuchungechunge oluncane lwepulasitiki lapho kusetshenziswa khona amathrekhi ahambayo. Izakhi ezinjalo kulula ukuzilimaza. Kwezinye izimo, izintambo ziyaphuma kuzixhumi ngenxa yokudlidliza. Kodwa-ke, i-soldering yabo izoba ishibhile kunokuthatha indawo ye-matrix.
Ngenxa yalokho, kunomsindo, kodwa asikho isithombe, noma isithombe siqala ukusakazwa ngokuphazamiseka. Futhi, izinkinga nge-loop yedatha zingaziveza kulokhu okulandelayo:

• ama-ripples nokunye ukuhlanekezela kuvela ngezikhathi ezithile esikrinini se-TV;
• izinguquko zombala ziyabonakala – ezingxenyeni ngazinye noma kuyo yonke indawo yesibonisi;
• isithombe siyanyamalala, kodwa singabuya uma uthepha kancane ikesi le-TV.

https://cxcvb.com/texnika/televizor/problemy-i-polomki/pomexi-na-televizore.html Uma ukuxhumana kulahleka kumathrekhi okulawula weluphu, isithombe siyanyamalala ngokuphelele. Uma isithombe sinyamalala ku-TV ngenxa yalesi sizathu, kuncane okungenziwa: ukuzilungisa akunconywa kulokhu. Ingxenye eyonakele ingathathelwa indawo uchwepheshe onolwazi. Uma isikrini simnyama, khona-ke kufanelekile ukuhlola uhlelo lwe-backlight, oluhlome ngethoshi. Uma uyigqamisa esibukweni, futhi isithombe sizobonakala, khona-ke lesi yisizathu. I-backlight iyalungiseka, noma kunjalo, ukufaka esikhundleni sezingxenye ezishisiwe, udinga ukuhlakaza icala, okuyinto engcono kakhulu eshiywe ku-master.
Umthombo olandelayo wenkinga yi-inverter namayunithi wokushanela. Ngokuvamile zethulwa ngendlela yamamojula angahlukaniseki. Amaphutha kuzo aholela ekuhlanekeni kwesithombe okuhlukahlukene, okuhlanganisa nokulahlekelwa okuphelele. Iziguquli ezilimele zizinika ukubukeka kwesithombe esiqandayo nokufiphala ngemva kokuvula isikrini. Ukwazi ukuthi ungaphatha kanjani i-soldering iron, ungakwazi ukufaka esikhundleni samamojula aphukile. Noma uye esikhungweni sesevisi. Enye ingxenye yehadiwe yedivayisi yethelevishini iphrosesa yevidiyo. Ukwehluleka okwenzeka kuyo kubangela ukuhlanekezela esikrinini. Imibala iqala ukubonakala ngokungalungile. Futhi lokhu akusho ngaso sonke isikhathi i-chip ephukile. Ukusebenza okungalungile kwephrosesa yevidiyo kungenzeka uma amaphuzu e-solder ebhodini alimala ngenxa yokushaqeka noma ukudlidliza.
Ukulungisa le ngxenye akwenzeki – ukushintshwa kuyadingeka. Isikhungo senkonzo senza ukuxilonga okuphelele, sibuyisela amaphuzu okuthengisa. Ekhaya, lokhu ngeke kusebenze, ngoba imishini ekhethekile namakhono adingekayo.

Yini engenziwa ekhaya

Ukwenza ukulungiswa kwe-TV encane futhi elula phambi komsindo futhi kungekho sithombe, ngaphandle kolwazi olukhethekile, ungenza okulandelayo:

1. Vula bese uvala isamukeli se-TV . Lokhu kuzosiza ukulungisa izinkinga zesofthiwe.
2. Nqamula okokusebenza kokusebenza kwamandla . Bese uhlola ubuqotho bezintambo, ukuxhumana okulungile kanye nokuba khona kokungcola ebusweni boxhumana nabo.
3. Khipha ivolumu kumaki aphezulu bese uyibuyisela ezingeni elikahle ukuzwa . Lokhu kuzovumela ukunikezwa kwamandla ukuthola amandla anele.

Ngaphezu kwalokho, kuyatuswa ukuthi uthole i-voltage stabilizer uma isithombe esikusikrini se-TV sinyamalala lapho into esebenza ngogesi enamandla ivuliwe. Ngoba ingashisa ama-capacitor. Ngesikhathi esifanayo, isikrini siqala ukungabi nalutho, futhi isithombe siphindwe kabili. Uma i-elementi evuvukele itholakala, kuzodingeka uyishintshe kanye ne-fuse, okungcono kakhulu ukushiya kuchwepheshe. Uma i-TV ikhanya, kodwa singekho isithombe futhi isikrini simnyama, kufanele uhlole ukuxhumana nekhebula. Uma usebenzisa i-“tulips”, intambo edlulisa isignali yevidiyo ingase ingakwazi ukuxhumana kahle nesixhumi. Ngenxa yalokho, isibonisi asiba nalutho, kodwa isignali yomsindo ihlala. Kuyafaneleka futhi ukuhlola ikhebula lamandla ukuze lifakwe ngokuqinile.

Abanye abanikazi be-TV baqhamuke nendlela engavamile yokuxazulula le nkinga. Ingqikithi yayo iwukuba kwenyuswe izinga levolumu liye kumaki aphezulu. Ngemva kwemizuzwana embalwa, isithombe kufanele sivele. Le ndlela izosebenza uma kwenzeka ukwehluleka kwesikhathi esisodwa.

Nokho, okokuqala kufanele uqiniseke ukuthi isikrini se-TV sisebenza kahle. Lokhu kufakazelwa isikrini se-splash esivela uma sivuliwe. Uma ingekho futhi isibonisi sihlala simnyama, kusho ukuthi ingxenye eyodwa yangaphakathi yesamukeli se-TV esinesibopho sokubonisa isithombe siyaphuka.

Ungayixazulula kanjani inkinga nge-Samsung TV

Ngezinye izikhathi kwenzeka ukuthi asikho isithombe ku-Samsung TV, kodwa kukhona umsindo. Kulokhu, kunconywa ukuhlola isignali yevidiyo ngokulandela izinyathelo ezimbalwa:

1. Kusilawuli kude, chofoza inkinobho ethi Ikhaya.
2. Nweba ingxenye ethi “Izilungiselelo”.
3. Khetha into ethi “Ukusekela”, bese – “Ukuzihlola”.
4. Manje sebenzisa umsebenzi othi “Run Image Test”.

Ngemuva kokukhomba izinkinga, kufanelekile ukuzama ukulungisa inkinga, uqondiswa izincomo zomenzi. Okulandelayo izinketho zokuthi kungani kunomsindo ku-Samsung TV, kodwa asikho isithombe:

Kulokhu kulandela ukuthi ukuwohloka okuningi kungalungiswa ngesandla. Ukulungisa i-Samsung TV phambi komsindo futhi kungekho sithombe ekhaya kungenzeka uma ukuqaqa icala kungadingeki. Uma kungenjalo, uma ukulungiswa kwezilungiselelo kungasizi, uzodinga ukufaka esikhundleni sengxenye enesici. Uma ukuhlolwa okungenhla kungaboniswa, iphutha lingaphakathi. Khona-ke uzodinga ukwenza ukuxilonga okufanelekayo ngokufakwa okulandelayo kwengxenye entsha.

Asikho isithombe ku-LG TV

Uma kunomsindo ku-LG TV, kodwa kungekho sithombe, kufanele uqale uthole imbangela yokwehluleka. Ukwehluleka kungase kube okwesofthiwe noma kwenzeke ngenxa yokwehluleka kwemojuli yangaphakathi. Ezinye izinkinga zilungiswa ekhaya. Umsebenzisi kuzodingeka enze ukuhlola okubonakalayo kosamukeli kamabonakude kanye nezingxenye zayo. Ezimweni lapho kukhona ukudluliswa kwesithombe okungalungile noma ukwephulwa kokukhiqizwa kombala, kunconywa ukwenza lezi zenzo ezilandelayo ngaphandle kokuzama ukuqaqa idivayisi:

1. Vala idivayisi ye-TV bese ukhipha ipulaki kusokhethi, uyishiye imizuzu engu-15-20. Lokhu kuzokusiza ukuthi ubhekane nokuphahlazeka kwesistimu.
2. Vala imodi yokonga amandla uma isithombe sihlala sibaneka futhi nokukhanya kwehlile.
3. Uma isithombe siphindwe kabili noma sifiphalisiwe, inketho ye-Trumotion kufanele inikwe amandla.
4. Uma isithombe sifiphaziwe, kuyanconywa ukuthi uhlole futhi ulungise izilungiselelo zokukhanya.
5. Uma kuvela umugqa onachashazi, khetha ukubukeka kwesilinganiselo esingu-16:9.

Ngaphezu kwalokho, uma kukhona isikrini esimnyama ku-LG TV, kodwa kunomsindo, kufanele uqiniseke ukuthi ibhokisi le-cable TV set-top box nezintambo ezixhunywe kulo ziyasebenza. Ngakho-ke, kuyadingeka ukuhlola ikhebula le-antenna nekhebula le-HDMI. Kungenzeka ukuthi inkinga ibe ngasohlangothini lomhlinzeki.
Kunconywa futhi ukuhlola izintambo ze-kinks nama-creases, kanye nokuhlola ubuqotho bezingxenye zokuxhuma. Ungakwazi futhi ukuvala isamukeli se-TV, udonse amapulaki ngaphandle kwezimbobo bese uwafaka kabusha. Uma izinketho ezingenhla zingasebenzi, lokhu kusho ukuthi ukwehluleka kwenziwa endaweni ngaphakathi komamukeli. Khona-ke udinga ukuxhumana nesikhungo sesevisi yenkampani. Ukungasebenzi kahle okungenzeka kube kanje:

• ukunikezwa kwamandla kuphukile: isikrini se-TV asikhanyi;
• i-capacitor yashiswa: isibonisi sikhanyisa futhi siphuma ngokushesha;
• i-matrix ayisebenzi: kukhona i-backlight, kodwa isithombe asiphelele;
• ikhebula le-matrix linephutha: isithombe siyanyamalala ngezikhathi ezithile;
• isithombe sanyamalala ku-LG TV, kodwa kukhona umsindo: i-inverter iphukile;
• i-backlight yonakalisiwe: ama-ripples noma isithombe esikhanyayo sivela;
• ukuphulwa kwephrosesa yevidiyo: isithombe sephuzile, ukuhlanekezela kombala kuyabonakala;
• ukungasebenzi kahle kwe-decoder: imigqa ebanzi ivela esibukweni.

Izindleko zokulungisa i-TV

Uma kwenzeka ukwehluleka kwehadiwe, uzodinga ukusebenzisa izinsizakalo ze-master. Phela, ukunikezwa kwamandla noma isikhulisi sevidiyo singaphuka.
Ngaphezu kwalokho, ngokuvamile isizathu silele ku-backlight enephutha, ikhebula le-matrix noma isilawuli sesikhathi. Izinkinga zezingxenyekazi zekhompuyutha zivame ukwenzeka ngenxa yokwehla kwamandla kagesi, ukuvuvukala kwama-capacitor, noma ukufakwa kwe-solder esezingeni eliphansi kwezinto. Ukuze uthole ukungasebenzi kahle, kuyadingeka ukunikeza idivayisi futhi wenze i-disassembly yayo. Kodwa lokhu kudinga amakhono athile ekuphatheni ubuchwepheshe. Kubalulekile ukukhumbula ukuthi ukungenelela okungenamsebenzi kungabangela ukuthi imishini ihluleke unomphela, okudinga ukulungiswa okumba eqolo.

Kunomsindo kodwa isithombe esiku-TV asisekho, kungani lokhu kwenzeka, yiziphi izizathu nokuthi kufanele wenzeni: https://youtu.be/n7StZYo-rD0 Lezi yizizathu eziyinhloko ezihambisana neqiniso lokuthi i-TV ine ulahlekelwe isithombe, kodwa kukhona umsindo. Ungakwazi ukuhlola mathupha ubuqotho bezintambo nokuqina kwamapulaki. Futhi nokwenza ukuhlolwa kwesithombe bese ulungisa imingcele yokunikeza umbala. Uma lokhu kungasizi, kufanele unake uhlobo lokuhlanekezelwa kwesithombe. Lokhu kuzosiza ukunquma ukuthi yiziphi izingxenye zangaphakathi ezidinga ukulungiswa. Ukuchithwa kwecala kungenziwa yinkosi efanelekayo.