1. Qinisekisa ukuba kukho impazamo
Jonga impendulo emva kokuba isikrini sivuliwe (njengokuba ingaba isibane sangasemva sikhanya na, nokuba kukho nawuphi na umxholo wesiboniso, isandi esingaqhelekanga, njl.njl.).
Jonga ukuba isikrini se-LCD sinomonakalo obonakalayo na (iintanda, ukuvuza kolwelo, iimpawu zokutsha, njl.njl.).
2. Qinisekisa igalelo lombane
Linganisa i-voltage yokufaka: Sebenzisa i-multimeter ukuze ubone ukuba i-voltage yokufaka yokwenyani izinzile kwi-12V.
Ukuba i-voltage iphezulu kakhulu kune-12V (njengaleyo ingaphezulu kwe-15V), ingonakalisa ngenxa ye-overvoltage.
Jonga ukuba i-adaptha yamandla okanye isixhobo sombane asisebenzi kakuhle na.
Jonga i-polarity yombane: Qinisekisa ukuba iipali ezilungileyo nezingalunganga zomdibaniso wombane ziqhagamshelwe ngasemva (uqhagamshelo olungasemva lunokubangela i-short circuit okanye ukutsha).
3. Jonga iisekethe zangaphakathi
Ukujonga ibhodi yamandla:
Jonga ukuba kukho izinto ezitshileyo kwibhodi yamandla (ezifana ne-capacitor bulge, i-IC chip burning, i-fuse blown).
Vavanya ukuba i-voltage ephumayo yebhodi yamandla (efana ne-12V/5V kunye nezinye ii-voltage zesibini) iqhelekile na.
Isiphumo sesiginali yebhodi yomama:
Jonga ukuba iintambo ezivela kwi-motherboard ukuya kwisikrini se-LCD azilunganga okanye azinazo ii-short-circuit.
Sebenzisa i-oscilloscope okanye i-multimeter ukulinganisa ukuba umgca wesignali ye-LVDS unayo na i-output.
4. Uhlalutyo lwesekethe yomqhubi wesikrini se-LCD
Jonga ukuba ibhodi ye-screen driver (ibhodi ye-T-Con) yonakele ngokucacileyo na (njengokutsha kwe-chip okanye ukungasebenzi kakuhle kwe-capacitor).
Ukuba i-overvoltage ibangela umonakalo, iindawo eziqhelekileyo zezi:
Ukwaphulwa kwe-IC yolawulo lwamandla.
I-diode yokulawula i-voltage okanye ityhubhu ye-MOS kwisekethe yombane wesikrini iyatsha.
5. Uvavanyo lwendlela yokukhusela i-overvoltage
Jonga ukuba ingaba imonitha yenzelwe iisekethe zokukhusela i-overvoltage (ezifana nee-TVS diodes, iimodyuli zozinzo lwe-voltage).
Ukuba akukho sekethe yokukhusela, i-overvoltage inokuchaphazela ngokuthe ngqo into eqhuba isikrini se-LCD.
Ukuthelekisa iimveliso ezifanayo, qinisekisa ukuba igalelo le-12V lifuna uyilo olongezelelweyo lokhuseleko.
6. Ukuphinda-phinda kwempazamo nokuqinisekiswa kwayo
Ukuba iimeko ziyavuma, sebenzisa umbane ohlengahlengiswayo ukuze ulinganise igalelo le-12V, unyuse kancinci i-voltage (njenge-24V) kwaye ujonge ukuba ukhuseleko luqalisiwe okanye lonakele.
Shintsha isikrini se-LCD somzekelo ofanayo ngokuqinisekisa ukusebenza kakuhle kwaye uvavanye ukuba sisebenza ngokwesiqhelo na.
7. Izigqibo kunye neengcebiso zokuphucula
Uxinzelelo olugqithisileyo:
Ukuba i-input voltage ayiqhelekanga okanye i-protection circuit ayikho, i-overvoltage yimbangela enokwenzeka.
Kucetyiswa ukuba umsebenzisi anike ingxelo yokuhlolwa kweadaptha yamandla.
Ezinye izinto ezinokwenzeka:
Ukungcangcazela kwezothutho kubangela ukukhululeka kwentambo okanye ukuchithwa kwezixhobo.
Iziphene ze-electrostatic ezinganyakaziyo okanye zemveliso zibangela ukuba itshiphu ye-screen driver ingasebenzi.
8. Amanyathelo okulandela
Buyisela isikrini se-LCD esonakeleyo kwaye ulungise ibhodi yamandla (njengokutshintsha izinto ezitshileyo).
Kucetyiswa ukuba abasebenzisi basebenzise umbane olawulwayo okanye batshintshe iadaptha yokuqala.
Isiphelo soyilo lwemveliso: yongeza isekethe yokukhusela i-overvoltage (njenge-terminal yokufaka ye-12V eqhagamshelwe kwi-diode yeTVS ehambelanayo).
Ixesha leposi: Meyi-20-2026
