Izizathu zokubonakala kwemivimbo ethe nkqo kunye nethe tyaba kwiscreen seTV, indlela yokuphelisa

Ingxaki yokubonakala kwemivimbo kwisikrini idla ngokuvela kwiiTV zanamhlanje kunye nomboniso wekristale. Ngenxa yoko, zivela, ngaba kukho uxhulumaniso phakathi kwesizathu sokuphuka kunye nohlobo lwee-strips, ingaba imiphumo emibi kangakanani ukuba ukungasebenzi kakuhle akunqunywanga ngexesha – le miba kunye neminye imiba ixutyushwa kweli nqaku.

Iindidi zamabhendi kwiscreen seTV

Isiphako sesikrini sikamabonwakude ngendlela yemigca ebonakala ingalunganga ayichaphazeli nje kuphela umgangatho womfanekiso, kodwa kunye nokusebenza kweemodyuli ze-hardware, ngenxa yokungaphumeleli kwazo iingxaki ezinjalo. Ngenxa yoko, ubomi babo benkonzo buyancipha kakhulu.
Ezona ntlobo zixhaphakileyo zemigca kwiscreen seTV:

• obhityileyo oxwesileyo;
• othe nkqo obhityileyo;
• enemibala emininzi ethe tye;
• pink nkqo;
• mhlophe nkqo;
• nkqo eluhlaza okwesibhakabhaka;
• nkqo eluhlaza;
• ubomvu nkqo;
• emnyama ethe nkqo kwaye ethe tye;
• umthubi ngokuthe nkqo;
• emhlophe ethe tyaba.

Olu luhlu alumeleli zonke iintlobo zeziphene kwisikrini. Imivumbo kwiscreen seTV inokuba yodwa kwaye iphindaphindwe, ibe mifutshane kwaye inde, kodwa yahlulwe ikakhulu ngokuthe nkqo, ithe tye kunye nenemibala emininzi.

Ingxaki inokuvela ngamaxesha athile kwaye inyamalale, kodwa akukho sizathu sokuba eso siphene sishiywe singajongwanga – ekugqibeleni sisongela ngomonakalo omkhulu ngakumbi.

Izizathu zokubonakala kwemivimbo, kuxhomekeke kuhlobo

Kwanobona mabonakude banamhlanje abanakukhuselwa ngokupheleleyo ngokuchasene nakuphi na ukusilela kwangaphambili kweemodyuli zehardware. Amaxesha amaninzi oku kwenzeka ngenxa yokhathalelo olungafanelekanga, kancinci kancinci ngenxa yempazamo yomenzi. Ngamanye amaxesha imivimbo eyahlukeneyo kwiscreen seTV inokubangelwa ngumonakalo omnye okanye, ngokuchaseneyo, iziphene ezifanayo zenzeka ngenxa yezizathu ezahlukeneyo. Ukufumana ukuba zeziphi izizathu eziphambili zokubonakala kolunye uhlobo okanye olunye uhlobo lweebhendi, siya kuziqwalasela ngokubanzi.

Imigca emxinwa ethe tye kwiscreen sikamabonakude

Ngokuqhelekileyo imbangela yokwenzeka kwabo kukuphulwa kwesakhelo sokuskena okwenzekayo ngenxa yokunyuka kwamandla kwinethiwekhi. Ngenxa yoko, oku kunokubangela ukuqhekeka kwe-chip. Nanku umzekelo wokungasebenzi kakuhle kunye nendlela yokuyilungisa: https://youtu.be/sviY3BZlAuY

Imibalabala ethe tye

Xa imivimbo ethe tyaba yee-shades ezahlukeneyo ibonakala kwiscreen seTV, kunye nemigca okanye i-ripples, kunokwenzeka kakhulu ukuba intambo yoqhagamshelwano inqanyulwe kwi-matrix. Kule meko, kufuneka ithengiswe. Ngokuqhelekileyo ingxaki ibangelwa yi-motherboard eyaphukileyo. Oku ngokuqhelekileyo kwenzeka xa ukusebenza kweyunithi yokulawula umfanekiso kuhla.

Imigca emnyama ethe nkqo kunye nethe tye kwiscreen sikamabonakude

Imivumbo enjalo ihlala ibekwe kumacala ahlukeneyo esikrini, ngamanye amaxesha embindini wayo. Le yenye yezona zinto ziyingxaki yokuqhekeka, efuna iindleko ezinzulu, kuba unobangela kwiimeko ezininzi ngumonakalo kwidikhowuda. Kule meko, ukutshintshwa okupheleleyo kwe-matrix kuya kufuneka. Ukuba amanyathelo angxamisekileyo awathathwa, imigca iya kwandiswa, isikrini siya kuyeka ukukhanya. Kuya kufuneka sityale imali eninzi ngakumbi ukubuyisela ukusebenza kwayo. Iingxaki ezininzi ngokubonakala kwemivimbo kwizikrini zeTV zingasombululwa ngumdlali weendaba zanamhlanje, umzekelo, njenge- TANIX TX6 4/64GB .

Imigca emi nkqo ebhityileyo kwimonitha

Isizathu sokubonakala kwemivimbo ethe nkqo kwiscreen seTV, esingakhanyiyo konke konke, kusenokuba kukuqhekeka kwedekhowuda okanye iikholamu zematrix. Oku kwenzeka, umzekelo, ngenxa yokubetha kombane okanye ukunyuka kwamandla ngokukhawuleza. Ukuba amanyathelo angexesha awathathwa, umcu uya kwanda kwaye ekugqibeleni ugqume ngokupheleleyo isikrini.

Ukubuyiswa kwe-matrix ye-TV ye-LED (ikhefu kwi-matrix):

https://youtu.be/lJqbio3SYPc

pink ethe nkqo

Amaxesha amaninzi, imibala yemibala kwisikrini ibonakala ngenxa yomonakalo kwimatrix esweni. Ukuqhekeka kunokwenzeka ngenxa yokungaphumeleli kwenkqubo yokubonelela ngombane, ukothuka kunye nezinye iimpembelelo ezifanayo. Isizathu sinokuba kukunxiba okuqhelekileyo kunye nokukrazula kwezinto: ukuba umgca othe nkqo wombala opinki (ongaphantsi kaninzi omfusa) ubonakala kwimonitha, isizathu soku kudla ngokuba kukuqhekeka kwesikali. Ngamanye amaxesha i-defect efanayo ikhona nakwiiTV ezintsha, kodwa apha isizathu, njengomthetho, sisiphene sefektri – kule meko, iTV kufuneka ibuyiselwe ngokukhawuleza kwivenkile phantsi kwewaranti.

Umgca omhlophe othe nkqo (okhanyayo) kwiscreen sikamabonakude

Isenokungabonakali kwaye iqhwabe, okanye, ngokuchaseneyo, ibonakaliswe ngokucacileyo. Ukubonakala kweebhanti ezinjalo – nangona kunjalo, kunye neebhendi zanoma yiyiphi enye i-shades – ngokuyinhloko ibonisa ukungasebenzi kakuhle kwe-matrix. Unokujonga ukuchaneka kolu qikelelo ngolu hlobo lulandelayo: cinezela, hambisa (ngaphandle komzamo omkhulu) okanye ngandlela thile yenza ngobunono kule element. Ukuba ibha iyanyamalala kwaye iphinde ivele kwisikrini, inxalenye yonakaliswe kwaye idinga ukutshintshwa. Omnye umzekelo wokuqhekeka okunemigca emhlophe ethe nkqo, kunye nendlela yokuyicombulula, jonga le vidiyo ingezantsi: https://youtu.be/CA5J5v6PYxg?t=34

Uluhlaza nkqo

Amaxesha amaninzi, imicu enjalo iyenzeka xa ikhadi levidiyo lishushu kakhulu okanye ligugile. Ukuba ixesha lewaranti aliphelelwanga, eyona ndlela ingcono kukutshintsha into. Esinye isizathu sokubonakala kwemivimbo eluhlaza okwesibhakabhaka (i-cyan) ethe nkqo inokuba kukuqhawuka konxibelelwano lwe-matrix loop. Esinye isizathu kukuba ngenxa yokufudumala, iibhola ze-solder zeprosesa yevidiyo zixotshiwe kwi-substrate ye-BGA.

Ibha eluhlaza ethe nkqo kwimonitha yeTV

Ngokuqhelekileyo, imbangela yenzeke kuyo umonakalo kwisakhiwo sentambo edibanisa ibhodi yokwenza umfanekiso kunye ne-LCD matrix yeTV. Ububanzi bomtya bunokuba bukhulu kwaye bube ziisentimitha ezininzi, okanye, ngokuchaseneyo, ube mxinwa kakhulu – ipixel enye. Ngokuqhelekileyo, ibonakala ngokungalindelekanga kwisikrini, kwaye emva kokufudumeza okwaneleyo kweTV, iyanyamalala, kwaye umfanekiso uboniswa ngaphandle kokuphazamiseka. Kwezinye iimeko, umtya uhlala, kodwa ukhangeleka ukhaphukhaphu kunemvelaphi ephambili.

ubomvu nkqo

Inkangeleko yayo ihlala ilala kunxibelelwano oluphantsi lwentambo ye-matrix. Ngamanye amaxesha iindawo ezitshileyo zingunobangela. Ingabonisa kwakhona ukonakaliswa kwezihlanganisi zentambo okanye uthuli lwazo. Imivimbo enjalo inokuvela kwakhona ngenxa yokuba umkhondo ebhodini uhlanjululwe okanye ucingo lweVGA lonakaliswe.

emthubi nkqo

Xa ibonakala kwi-LCD esweni, into yokuqala ongayenza kukuba uzame ukuyidibanisa kwinethiwekhi ngokuyikhupha kwiyunithi yenkqubo. Ukuba umtya uyanyamalala, ke ingxaki inokwenzeka kakhulu kwikhadi levidiyo. Ii-capacitors zinokudumba kwaye kufuneka zitshintshwe. Ngaphandle koko, ingxaki kufuneka ifunwe kwisiboniso. Le vidiyo ingezantsi ixoxa ngemizekelo emininzi yokungasebenzi kakuhle kwe-matrix yeTV kwaye ichaza izizathu zokwenzeka kwazo, inika abafowunelwa kulungiso olunzima: https://youtu.be/Jtj3ID3ZMOg?t=111

Ukulungisa ingxaki

Ukubonakala kwemivimbo kwisikrini sikamabonwakude akukabi sisizathu sokuqala ngokukhawuleza ukuchithwa kwesixhobo. Ngaphambi kokukhangela isizathu sokungasebenzi kakuhle kweesekethe kunye neebhodi, kufuneka uqale ukhangele:

• ukudibanisa intambo ekhupha umfanekiso – isinxibelelanisi simdaka;
• useto kwiTV ngokwayo usebenzisa imo yokuseta umfanekiso ozenzekelayo.

Ukuba ugcina imicu kwisikrini emva kokuguqulwa, kuya kufuneka ucinge malunga nokulungiswa okunzulu. Njengoko sibonile ngaphambili, izizathu zokuvela kweebhendi ezahlukeneyo zibangelwa ukungasebenzi kakuhle:

• uqhagamshelwano lwelophu ye-matrix;
• imatrix ngokwayo;
• izinto zeebhodi kunye ne-microcircuits.

Le miba inokulungiswa, kodwa ngamanye amaxesha ukuthenga iTV entsha kungcono kunokuyihlaziya. Ezinye iindawo ezisecaleni zibiza kakhulu, ngaphandle koko, akukho siqinisekiso sokuba xa utshintsha iinxalenye kunye neesekethe, iTV iya kusebenza ngokuchanekileyo.

Siza kuhlalutya iindlela ezinokwenzeka zokuphelisa ezi kunye nezinye izinto ezingasebenzi kakuhle.

Ukuqhawula uqhagamshelwano lwentambo yematrix

Iingxaki zoqhagamshelwano zinokuthi zenzeke ngenxa yokusetyenziswa ngokungafanelekanga kwesixhobo okanye umgangatho ombi wokudityaniswa, yinyamekele, umzekelo, ukucoca isikrini. Ukuhlola okulula ngaphandle kokusetyenziswa kweglasi yokukhulisa ngamanye amaxesha kwanele ukumisela unxibelelwano olubi. Akunzima ukulungisa ingxaki kunye nabafowunelwa be-oxidized, ngakumbi kwindawo encinci yomonakalo. Uya kufuna i-blade eqhelekileyo okanye imela ukucoca i-plaque. Emva kokususa i-plaque, qiniseka ukujonga i-voltage ngokukhala nge-multimeter. Umzekelo wokucocwa kwee-contacts ze-LCD TV cable uboniswe kwividiyo engezantsi: https://youtu.be/3hb0Iao0An8?t=101 Isizathu sokungaqhagamshelwa kakuhle sisenokuba luqhagamshelwano olungachanekanga lweentambo. Kule meko, kufuneka uqhawule zonke iilophu, uze udibanise ngokuchanekileyo.

Ukupheliswa kwekhefu kwi-loop ye-matrix

Okokuqala, kufuneka uqinisekise ukuchaneka kokuchithwa okusolwayo ngokuhambisa okanye ukucinezela intambo. Ukuba i-streaks yanyamalala, ngoko umonakalo ubekwe ngokuchanekileyo. Emva koko kufuneka uzixhobise nge-microscope ye-soldering kwaye ufumane i-wiring eyonakeleyo. Umsebenzi ufuna ukunyamezela kunye nobucwebe obuchanekileyo, kunye nobuchule kunye nezixhobo eziyimfuneko. Iindawo eziphosakeleyo zibuyiselwa nge-varnish conductive. Unako kwakhona ukutshisa abafowunelwa kwiqondo lokushisa elamkelekileyo, kodwa akukho meko kufuneka ukugqithisa kuvunyelwe, ngaphandle koko, endaweni yokulungiswa, iingxaki ezongezelelweyo zinokufunyanwa.

Le nkqubo inzima, kaninzi iinkosi aziyenzi.

Ukutshintshwa kwentambo

Ukuba kufunyaniswe ukuba intambo ayiphumelelanga, kuya kufuneka uyibuyisele entsha, kwaye uqiniseke ukuba usebenzisa leyo ifanelekile kule modeli yeTV.

Uphawu loyilo lweempawu ezahlukeneyo zeTV kukuba umenzi ngamnye uneyakhe, umntu ngamnye, ngoko ke funda imiyalelo ngaphambi kokuba uqhubeke nokulungisa.

Intambo ifumaneka kwimeko yeTV, ngoko kufuneka ukhulule i-fasteners edibanisa ngasemva. Ukuba banikezela ngobunzima, musa ukuzama ukuzikhulula ngokulandelelana kwewotshi: njengomthetho, zonke iibholiti azikhuphuki ngokuchasene nayo. Kuyimfuneko ukuba uqaphele kakhulu xa uchitha, kuba kwiimeko ezininzi ikhebula libekwe kwisigqubuthelo ngokwayo – oku kuya kuthintela umonakalo kunye nokuphulwa kwezinto. Akuyimfuneko ukuthengisa iingcingo – izinto zokudibanisa zineziqhagamshelo. Ukususa ikhebula, kufuneka ucinezele i-latch ekhethekileyo. Intambo ephukile, ngokuqinisekileyo, inokutshintshwa ngaphandle kweworkshop, akunzima.

Ungazisusa njani iintambo zoyilo olwahlukeneyo ukuze zitshintshwe ziboniswe kule vidiyo ingezantsi: https://youtu.be/_o-lQ-FA3dM Ukuba ujonge ukuzitshintsha ngokuzimeleyo amacandelo okanye imatrix ngokwayo, kufuneka uqwalasele oku kulandelayo:

• ubukhulu becala, abaqhubi banobubanzi obuncinci, ngoko ke, ukwenzela ukuphepha umonakalo, kufuneka baphathwe ngokucophelela;
• ukubuyisela iinxalenye, kufuneka ungabi namava kuphela kulo mbandela, kodwa kunye nesitokhwe kwizixhobo ezilungileyo: i-microscope, isikhululo se-infrared soldering, isethi yezixhobo zokusebenza kakuhle ngeebhodi, njl.

Uyisusa njani imivimbo kwiscreen seTV yeSamsung: https://youtu.be/kJNOy0k5_CM Ukutshintsha ifilimu ye-matrix cable – inkqubo inzima. Ngokuqhelekileyo, iinkosi zinikezela ukutshintsha yonke i-matrix ukuze ungakhathazeki ngokuthengisa intambo. Ngaphambi kokuba uqalise ukulungiswa okunzulu okunjalo, kuyacetyiswa ukuba ufunde kwii-mock-ups okanye ii-TV ezingasebenzisekiyo. Nangona kunjalo, ukulungiswa okunjalo kucetyiswa ukuba kwenziwe kwiziko lenkonzo. Ngelishwa, inokubiza phantse isibini kwisithathu seendleko zeTV, ngoko kufuneka uqale ufumanise ixabiso lenkonzo, kwaye emva koko wenze isigqibo sokugqibela. https://youtu.be/speMUzLe3rs Imivimbo yemibala eyahlukeneyo kunye nobukhulu, i-ripples, i-streaks kunye nezinye iziphene ezifanayo zingabonakala kwisikrini se-TV kungekhona nje ngenxa yomonakalo omncinci, kodwa nangenxa yomonakalo omkhulu. Abasoloko bekulungele ukuziphelisa: ngamanye amaxesha kufuneka uqhagamshelane neziko lenkonzo, uhlawulele ukulungiswa okuxabisa kakhulu kunye nokutshintsha iindawo.