1. Qinisekisa iphutha
Hlola ukusabela ngemva kokuba imonitha ivuliwe (njengokuthi ingabe ukukhanya kwangemuva kuyakhanya, noma ngabe kukhona okuqukethwe kwesibonisi, umsindo ongajwayelekile, njll.).
Bheka ukuthi isikrini se-LCD sinomonakalo obonakalayo yini (imifantu, ukuvuza okuwuketshezi, amamaki ashile, njll.).
2. Qinisekisa okokufaka kwamandla
Kala i-voltage yokufaka: Sebenzisa i-multimeter ukuze uthole ukuthi i-voltage yangempela yokufaka izinzile yini ku-12V.
Uma i-voltage iphakeme kakhulu kuno-12V (njengangaphezulu kuka-15V), ingase yonakaliswe ukugcwala ngokweqile.
Hlola ukuthi i-adaptha yamandla noma i-adaptha yamandla aphumayo ayijwayelekile yini.
Hlola i-polarity yokunikezwa kwamandla: Qinisekisa ukuthi izigxobo eziphozithivu nezinegethivu zesixhumi esibonakalayo samandla zixhumeke emuva yini (uxhumano olubuyela emuva lungabangela ukujikeleza okufushane noma ukusha).
3. Hlola izifunda zangaphakathi
Ukuhlolwa kwebhodi lamandla:
Hlola ukuthi azikho yini izingxenye ezishile ebhodini lamandla (njenge-capacitor bulge, ukushiswa kwe-IC chip, fuse fuse).
Hlola ukuthi ingabe i-voltage ephumayo yebhodi lamandla (efana no-12V/5V namanye amandla kagesi wesibili) ijwayelekile.
Okukhipha isignali ye-Motherboard:
Hlola ukuthi amakhebuli asuka ebhodini lomama kuya esikrinini se-LCD awalungile yini noma ane-circuited emfushane.
Sebenzisa i-oscilloscope noma i-multimeter ukuze ulinganise ukuthi ulayini wesignali we-LVDS unokuphumayo yini.
4. Ukuhlaziywa kwesekethe yomshayeli wesikrini se-LCD
Hlola ukuthi ibhodi lomshayeli wesikrini (ibhodi le-T-Con) libonakalisiwe ngokusobala (njengokushiswa kwe-chip noma ukwehluleka kwe-capacitor).
Uma i-overvoltage idala umonakalo, amaphuzu amaphutha ajwayelekile yilawa:
Ukuhlukaniswa kwe-IC yokuphathwa kwamandla.
I-voltage diode yesilawuli noma ishubhu le-MOS kusekethe yokunikeza amandla esikrinini iyashiswa.
5. Ukuhlolwa kwendlela yokuvikela ugesi omningi
Hlola ukuthi umshini oqaphayo uklanywe yini ngamasekhethi okuvikela ukugeleza kwamandla (njengama-TVS diode, amamojula okuqinisa amandla kagesi).
Uma ingekho isekethe yokuvikela, i-overvoltage ingaba nomthelela ngokuqondile entweni yokushayela isikrini se-LCD.
Ukuqhathanisa imikhiqizo efanayo, qinisekisa ukuthi okokufaka kwe-12V kudinga idizayini yokuvikela eyengeziwe.
6. Ukuvela kwephutha nokuqinisekisa
Uma izimo zivuma, sebenzisa ugesi olungisekayo ukuze ulingise okokufaka kwe-12V, ukhuphule kancane kancane i-voltage (efana no-24V) futhi ubheke ukuthi ukuvikela kuyacushwa noma konakele.
Shintshanisa isikrini se-LCD esiyimodeli efanayo nesiqiniseko sokusebenza kahle futhi uhlole ukuthi sisebenza ngokujwayelekile yini.
7. Iziphetho neziphakamiso zokuthuthukisa
Amathuba okucindezela ngokweqile:
Uma i-voltage yokufaka ingajwayelekile noma isifunda sokuvikela singekho, ukugcwala ngokweqile kuyimbangela engenzeka.
Kunconywa ukuthi umsebenzisi anikeze umbiko wokuhlola i-adaptha yamandla.
Amanye amathuba:
Ukudlidliza kwezokuthutha kubangela ukuxega kwekhebula noma ukubola kwezingxenye.
Ukungasebenzi kahle kwe-electrostatic noma ukukhiqiza kubangela ukuthi i-chip yesishayeli sesikrini ihluleke.
8. Izinyathelo zokulandelela
Shintsha isikrini se-LCD esilimele bese ulungisa ibhodi lamandla (njengokushintsha izingxenye ezishile).
Kunconywa ukuthi abasebenzisi basebenzise amandla alawulwayo noma babuyisele i-adaptha yokuqala.
Ukuphela komklamo womkhiqizo: engeza isekethe yokuvikela ugesi omningi (njengetheminali yokufaka engu-12V exhunywe ku-parallel TVS diode).
Isikhathi sokuthumela: Oct-17-2025
