1. Qinisekisa impazamo eyenzekayo
Jonga impendulo emva kokuba imonitha ilayitiwe (efana nokuba isibane sangasemva siqaqambile, nokuba kukho nawuphi na umxholo wokubonisa, isandi esingaqhelekanga, njl. njl.).
Qaphela ukuba isikrini se-LCD sinomonakalo owenziwe ngokomzimba (iintanda, ukuvuza kolwelo, amanqaku okutsha, njl. njl.).
2. Qinisekisa igalelo lamandla
Ukulinganisa i-voltage yegalelo: Sebenzisa i-multimeter ukuze ubone ukuba i-voltage yegalelo langempela lizinzile kwi-12V.
Ukuba i-voltage iphezulu kakhulu kune-12V (efana nangaphezulu kwe-15V), inokonakala ngokugqithiswa kwamandla.
Jonga ukuba iadaptha yombane okanye imveliso yesixhobo sombane ayiqhelekanga.
Jonga i-polarity yonikezelo lwamandla: Qinisekisa ukuba iipali ezilungileyo nezingalunganga zojongano lwamandla ziqhagamshelwe ngasemva (uqhagamshelo olungemva lunokubangela isekethe emfutshane okanye lutshise).
3. Khangela iisekethe zangaphakathi
Ukujonga ibhodi yamandla:
Khangela ukuba kukho izinto ezitshisiweyo kwibhodi yamandla (ezifana ne-capacitor bulge, i-IC chip burning, i-fuse evuthelweyo).
Vavanya ukuba ingaba i-voltage ephumayo yebhodi yamandla (efana ne-12V/5V kunye namanye amandla ombane wesibini) iqhelekile.
Imveliso yebhodi yomama:
Jonga ukuba iintambo ezisuka kwi-motherboard ukuya kwiscreen se-LCD zibuthathaka okanye zifutshane.
Sebenzisa i-oscilloscope okanye i-multimeter ukulinganisa ukuba umgca wesignali we-LVDS unemveliso.
4. Uhlalutyo lwesekethe yomqhubi wesikrini se-LCD
Khangela ukuba ibhodi yomqhubi wesikrini (ibhodi ye-T-Con) yonakele ngokucacileyo (efana nokutshiswa kwe-chip okanye ukusilela kwe-capacitor).
Ukuba i-overvoltage ibangela umonakalo, amanqaku eempazamo eziqhelekileyo zezi:
Ulawulo lwamandla IC ukuqhekeka.
I-voltage regulator diode okanye ityhubhu ye-MOS kwisekethe yombane wesikrini iyatshiswa.
5. Uvandlakanyo lwendlela yokhuseleko lombane
Jonga ukuba i-monitor iyilwe ngeesekethe zokukhusela umbane (ezifana ne-TVS diode, iimodyuli zokuzinzisa umbane).
Ukuba akukho sekethe yokukhusela, ukugqithiswa kwe-voltage kunokuchaphazela ngokulula into yokuqhuba isikrini se-LCD.
Ukuthelekisa iimveliso ezifanayo, qinisekisa ukuba igalelo le-12V lifuna uyilo olongezelelweyo lokukhusela.
6. Ukuphindwa kwempazamo kunye nokuqinisekiswa
Ukuba iimeko zivumela, sebenzisa umbane ohlengahlengiswayo ukuze ufanise igalelo le-12V, ukwandisa ngokuthe ngcembe i-voltage (efana ne-24V) kwaye uqaphele ukuba ukhuseleko luqhutywe okanye lonakaliswe.
Buyisela imodeli efanayo yesikrini se-LCD kunye nesiqinisekiso sokusebenza kakuhle kwaye uvavanye ukuba sisebenza ngokuqhelekileyo.
7. Izigqibo kunye neengcebiso zokuphucula
Ukubakho koxinzelelo olugqithisileyo:
Ukuba i-voltage yegalelo ayiqhelekanga okanye isiphaluka sokukhusela silahlekile, i-overvoltage yimbangela enokwenzeka.
Kucetyiswa ukuba umsebenzisi anike ingxelo yokuhlola iadaptha yamandla.
Okunye okunokwenzeka:
Ukushukuma kwezothutho kubangela ukukhulula intambo okanye i-desoldering yamacandelo.
I-electrostatic engatshintshiyo okanye iziphene zemveliso zibangela ukuba isitshixo somqhubi wesikrini sisilele.
8. Amanyathelo okulandelela
Buyisela isikrini se-LCD eyonakalisiweyo kwaye ulungise ibhodi yamandla (njengokutshintsha izinto ezitshisiweyo).
Kucetyiswa ukuba abasebenzisi basebenzise umbane olawulwayo okanye babuyisele iadaptha yokuqala.
Ukuphela koyilo lwemveliso: yongeza isiphaluka sokukhusela i-overvoltage (efana ne-terminal ye-12V yokufaka idityaniswe kwi-diode ye-TVS ehambelanayo).
Ixesha lokuposa: Oct-17-2025
