Dark spots bayyana a kan TV allo – dalilan da yadda za a cire blackouts

Akwai dalilai da yawa da ya sa baƙar fata ke bayyana akan TV. Amma a mafi yawan lokuta, kasancewar su yana nuna lalacewa ga matrix. Kuma ba lallai ne ya zama injina ba. Mai yiyuwa ne mai watsawa ya bare saboda lahani na masana’anta. Kuma wani lokacin duhu tabo a kan TV za a iya kawar da kanka! Amma a mafi yawan lokuta, dole ne ka nemi taimako daga cibiyar sabis mai izini na masana’anta.

Dalilan baƙar fata da launin toka a kan matrix TV

Tushen kowane TV na zamani (da kuma saka idanu kuma) matrix ne. Kuma ya ƙunshi yadudduka da yawa, musamman:

1. Polarizing tace . Yana daidaita watsa hasken da hasken baya ke fitarwa.
2. Lu’ulu’u masu ruwa . Suna ƙirƙirar “hoton” na ƙarshe akan allon. Ana sarrafa launi na kowane pixel ta hanyar samar da filin lantarki.
3. Waje tace . Idan ya ɓace, to a maimakon hoton da ke kan allon za a sami bangon launin toka mai duhu kawai. Ko da Layer na lu’ulu’u na ruwa, da kuma hasken baya, suna aiki da kyau.

Hakanan a bayan matrix shine hasken baya na LED. Ana sanya shi a ko’ina a kan dukkan jirgin diagonal na TV. A matsayinka na mai mulki, wannan tsiri ne na LED, inda kowane nau’i ya haɗa a layi daya (a cikin wasu TVs yana faruwa a cikin jerin, amma yawanci ba a amfani da wannan ƙirar a yanzu).

Kuma LEDs kuma suna da nasu albarkatun aiki (a matsakaita – daga 30 zuwa 50 hours).

Saboda haka, ana iya bambanta manyan dalilan da ya sa aibobi masu duhu suka bayyana akan LCD TV:

• “karshe” pixels ;
• lalacewar injiniya ga matrix;
• gazawar tsarin hasken baya (ya ƙunshi kai tsaye na fitilun LED, da kuma inverter wanda ke canza halin yanzu ko daidaita ƙarfin wutar lantarki);
• lalata Layer lahani;
• stratification na daya daga cikin yadudduka na matrix (polarization);
• gazawar guntu bidiyo (mai sarrafa hoto, wanda ke da alhakin sarrafa siginar dijital, canza shi da fitar da shi zuwa matrix crystal na ruwa).

“Pixels masu lahani

Hoton a cikin matrix crystal ruwa ya ƙunshi ƙananan pixels. Kuma a cikin kusan kashi 95% na lokuta, wuri mai duhu akan allo shine kawai sakamakon lalacewarsu. Yana kama da ƙananan ɗigo masu launuka masu yawa ba tare da wani halo a kusa ba. Launinsu na iya zama kusan kowane: shuɗi, kore, baki, fari, ja. Abin takaici, ba za a iya gyara irin wannan rugujewar ba, musamman da kansa. Amma a lokaci guda, masana’antun da yawa a cikin umarnin don amfani kai tsaye suna nuna cewa kasancewar pixels da yawa “karya” shine al’ada. Misali, ga Samsung, idan akwai kawai 3 daga cikinsu akan allon, to wannan ba a la’akari da yanayin garanti. Idan ƙari, to za a maye gurbin matrix kyauta. Don ƙarin cikakkun bayanai, tuntuɓi masana’anta kai tsaye.

Menene ke haifar da “karshe” pixels bayyana akan allon LCD?

Masana sun ce ana iya tsokanar su ko dai ta hanyar lalacewar injiniyoyi na TV (tasiri kan matrix), ko kuma faɗuwar ƙarfin lantarki kwatsam (musamman, wuce ƙimar halal, sama da 230 – 250V). Sabili da haka, idan halin yanzu a cikin gidan yanar gizon lantarki na gida bai tsaya ba, to ana bada shawara don haɗa TV ta hanyar mai kula da wutar lantarki na waje – wannan yana taimakawa wajen fadada rayuwar kayan aiki.

Matrix lalacewar inji

Mafi sau da yawa yana kama da tabo baƙar fata zagaye akan allon TV tare da gefuna marasa daidaituwa.

Yana faruwa ko da bayan ɗan ƙaramin busa ga matrix ko akwatin TV!

Yana nuna buɗaɗɗen da’irar da ke ba da ɗayan wuraren kristal ruwa. Ba shi yiwuwa a gyara irin wannan rushewar. Har ila yau, akwai haɗarin cewa irin waɗannan tabo za su ƙara girma a kan lokaci. Wato, tare da yuwuwar 95%, matrix ɗin ba da daɗewa ba zai zama mara amfani. Hakanan ya kamata a lura cewa yin amfani da TV tare da matrix lalacewa ta hanyar injiniya ba kyakkyawan ra’ayi bane. Akwai yuwuwar cewa akwai ɗan gajeren kewayawa tsakanin hanyoyin samar da matrix, wanda kuma zai haifar da gazawar injin inverter, ko ma GPU. Gyara irin wannan rushewar ba ta da amfani. Wato, nan gaba za ku sayi sabon TV don maye gurbin tsohon.

Rashin gazawar hanyar hasken baya

Akwai bambance-bambance 2 na irin wannan rushewar:

1. Kasawar LED da kanta . Wato semiconductor wanda ya ƙunshi masara ya ƙone. Ba shi yiwuwa a maye gurbin, a cikin cibiyoyin sabis suna ba da cikakken maye gurbin duk sassan LED-backlight. Amma wannan hanya ce mai ƙarancin tsada.
2. Rashin inverter, wanda ke da alhakin samar da halin yanzu zuwa hasken baya . A wannan yanayin, LED na iya fara aiki ba kawai a cikin wani yanki ba (misali, a kusurwar hagu na sama). Amma a nan gaba, ba shakka za a rage kuzarin sauran yankunan hasken wuta.

Yana kama da yankin baƙar fata mai madaidaicin halo maimakon wani wuri mai duhu daban. Amma a lokaci guda, idan kun haskaka haske mai ƙarfi akan ɓangaren duhu, zaku lura cewa hoton yana nunawa akan matrix na ruwa crystal. Kawai ba ya haskakawa. Kada ku yi wani abu da kanku, yana da kyau a tuntuɓi cibiyar sabis mai izini don taimako da wuri-wuri. Har ila yau, ya kamata a lura cewa idan hasken baya ya lalace, zai iya dawowa da kansa lokaci-lokaci. Amma wannan sakamako ne na ɗan gajeren lokaci. Ƙarin ƙarin tabbaci ne kawai cewa akwai cin zarafi a cikin da’irar wadata na filaye na LED.

Lalacewar Layer

Daga ciki, ana liƙa akwatin filastik na TV a baya tare da wani nau’in watsawa na musamman, mai kama da na yau da kullun na ƙarfe. Yana da alhakin nuna hasken da ya same shi daga hasken baya na LED, da kuma daga polarization Layer (yana nuna hasken da ke fadowa akan shi). Kuma idan wani wuri mai dadi, lalacewa, bawo ya samo asali a kan shimfidar watsawa, to wannan kawai yana kama da wuri mai duhu akan allon. Af, sau da yawa irin wannan lahani yana bayyana bayan an gyara matrix a cikin cibiyoyin sabis mara izini. Domin a can an liƙa Layer na watsawa da hannu, wato, yana da kusan ba zai yiwu ba don cimma cikakkiyar santsi da rashin lanƙwasa da folds. A cikin cibiyoyin sabis masu izini, a matsayin mai mulki, ana maye gurbin gabaɗayan murfin baya, wanda aka yi amfani da wani nau’in watsawa ko da a cikin masana’anta. Dangane da haka, yuwuwar gyare-gyare mara inganci gaba ɗaya ya daidaita.

Delamination na polarizing fim

Waɗannan wurare masu duhu a kan allon TV na iya ɗaukar kusan kowane nau’i. Mafi sau da yawa – suna zagaye, tare da gefuna daidai, da ratsi. Amma tare da ɗan matsa lamba, hoton zai iya zama al’ada a ɗan lokaci, kamar tare da matrix mai cikakken aiki. Yana nuna cewa fim ɗin polarizing ya bare. Kuma wannan yana faruwa ko dai saboda lalacewar inji, ko kuma saboda amfani da kayan tsaftacewa mai tsauri don goge allon TV. Kadan sau da yawa – saboda auren masana’anta. A cikin tsofaffin talbijin, har yanzu akwai matsala lokacin da lalatawar fim ɗin ya faru saboda zazzafar matrix. Saboda yawan zafin jiki, manne kawai ya narke! Wannan shi ne sau da yawa saboda gaskiyar cewa an sanya TV kusa da bango ko masu zafi (kuma baya kwantar da hankali). Gyara shi da kanka ba zai yiwu ba.

Rashin nasarar guntun bidiyo

Daya daga cikin rare kuma a lokaci guda hadaddun lalacewa. Guntuwar bidiyo galibi tana kasawa saboda yawan zafi ko lahani na masana’anta. A wannan yanayin, kayan tarihi daban-daban, tabo kusan kowane launi na iya bayyana akan allon. Amma ba za a iya samun hoto na al’ada ko menu na hoto ta kowace hanya ba. Talabijan din yana amsawa ne kawai don kunnawa da kashe shi “daga kanti”, saboda a cikin TV ɗin zamani har da sigina daga infrared transmitter kuma GPU ne ke sarrafa shi. Hakanan ana kawar da wannan rushewar a cikin yanayin cibiyar sabis kawai. Kuma akwai haɗarin cewa ba zai yiwu a gyara TV ɗin ba, tunda ba a samun guntuwar GPU ga kowane nau’in (dangane da manufofin cikin gida na masana’anta, da kuma wadatar kayan gyara).

Ƙarin Dalilan Abubuwan Baƙaƙen Baki akan Salolin TV Daban-daban

A ka’ida, abubuwan da ke haifar da spots ga kusan dukkanin TVs iri ɗaya ne, tun da tsarin matrix da ka’idar nuna hoton suna kama. Amma akwai wasu keɓantawa:

1. A kan Samsung TVs tare da matrix AMOLED, tabo masu duhu na iya nuna matrix “ƙonawa”. Babu hasken baya, kamar yadda kowane pixel fasaha ne na halitta LED. A lokaci guda, tabo suna kama da wani hoto na baya (ana kiran su “fatalwa”).
2. Tabo masu duhu a kan allon TV na LG  wani lokaci sakamakon kuskuren software! More daidai, saboda take hakkin AVI da MPEG4 codec fasahar. A irin waɗannan lokuta, sabunta firmware na banal ta amfani da ginanniyar kayan aikin TV da kanta yana taimakawa. Da wannan matsalar, ɗigon duhu suna bayyana a wurare daban-daban a duk lokacin da kuka kunna ta, ba tare da wani tsari na zagaye ba.

Abin da za ku iya yi a gida don gyara smudges da baƙar fata akan TV ɗin ku mai wayo

A lokuta da ba kasafai ba, tabo masu duhu suna ɓacewa da kansu na tsawon lokaci. Wannan yana faruwa idan sun bayyana saboda delamination na polarization Layer tare da ɗan zafi mai zafi na matrix. Amma wannan shine kusan 0.5% na duk lokuta. A wasu yanayi, ana buƙatar ziyarar cibiyar sabis. Kuma mafi sauri, mafi kyau. Ta yaya za a rage haɗarin tabo? Dole ne a bi shawarwari masu zuwa:

• ta kowace hanya da ake da ita don daidaita lalacewar inji mai yiwuwa ga TV (alal misali, idan akwai ƙananan yara a cikin gidan, to, yana da kyau a sanya TV a bango a tsayin akalla 1.5 – 1.7 mita);
• Kada ku sanya TV kusa da bango (mafi ƙarancin da ake buƙata, wanda masana’antun ke nunawa a cikin umarnin su, shine 15 centimeters);
• kada ku saita matsakaicin haske na hasken baya (a mafi yawan lokuta wannan ba a buƙata ba, kuma 50 – 70% na matakin haske yana da dadi ga yawancin masu kallo);
• Haɗa TV ta hanyar mai sarrafa wutar lantarki ta waje (zai rage yuwuwar gazawar na’urar inverter da graphics).

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TV Voltage Stabilizer 220 [/ taken] Don haka, idan akwai wuri mai duhu akan allon TV na LCD, to, mafi kyawun bayani shine aika kayan aiki zuwa cibiyar sabis. A lokaci guda kuma, maigidan yana buƙatar bayyana a cikin waɗanne yanayi da lahani ya bayyana, menene abubuwan da suka faru kafin wannan. Idan cikakken maye gurbin matrix ya zama dole, to, wannan zai biya game da 30 – 70% na farashin sabon irin wannan TV (dangane da takamaiman samfurin). Idan matsalar ta kasance a cikin na’ura mai hoto, to, maye gurbinsa yana kashe kusan 30 – 50% na farashin TV, amma maigidan ba koyaushe yana sarrafa kayan aikin ba.