Txhawm rau txiav txim siab seb lub vijtsam xauj tsev LED xav tau kho lossis hloov pauv, xav txog cov hauv qab no:
I. Zaub Performance Abnormalities:
1. Ntau dhau Brightness poob: Thaum tag nrho lossis ib nrab qhov ci ci ntawm lub vijtsam xauj tsev LED yog qhov qis dua qhov pib tus nqi (piv txwv li, poob qis dua 30%), nws yuav ua rau pom qhov tsis zoo ntawm qhov deb. Qhov no feem ntau yog tshwm sim los ntawm kev laus LED chips, tsis txaus lub zog rau tus tsav tsheb Circuit Court, los yog kub dissipation tsis ua hauj lwm. Cov ntaub ntawv yuav tsum tau ntsuas nrog lub ntsuas ntsuas luminance. Yog tias qhov nruab nrab qhov ci ci qis dua 70% ntawm tus nqi nominal, tus tsav tsheb module lossis LED nti board yuav tsum tau kho lossis hloov ua ntej.
2. Color Deviation or Color Block Abnormalities: If the LED rental screen exhibits uneven color blocks or overall color temperature deviation (e.g., too cool/too warm), it directly affects color reproduction. Such problems are often caused by inconsistent color decay of LED chips, loss of color calibration data, or signal interference. A professional colorimeter should be used to test the color coordinate deviation (Δuv>0.01) lossis brightness uniformity (<80%), and then the problem should be resolved through color calibration or module replacement. 3. Dead LEDs/Positive Pixel Spread: If one or more LEDs fail to light up and their number increases rapidly over time (e.g., more than 5% increase per week), it indicates a defect in the LED packaging or an overload in the driver circuit. If the negative pixel rate of the LED rental screen exceeds industry standards (e.g., negative pixel rate >0.01% rau cov ntxaij vab tshaus hauv qab P2.5), tag nrho LED lub rooj tsavxwm yuav tsum tau hloov pauv kom tsis txhob muaj qhov tsis zoo ntawm cov zaub los ntawm kev sib kis.
II. Mechanical Structure Failures:
1. Lifting System Stuttering / Tsis Txaus Ntshai: Stuttering, co, los yog hlau txhuam lub suab thaum lub sij hawm lifting txheej txheem ntawm lub vijtsam xauj tsev LED feem ntau yog tshwm sim los ntawm kev taw qhia rail deformation, iav hnav, lossis txawv txav lub cev muaj zog. Yog hais tias lub sij hawm lifting sib txawv ntau tshaj 10% (xws li, nominally 5 vib nas this tab sis tiag tiag yuav tsum tau 7 vib nas this), los yog lub zaus ntawm lub suab nrov txawv txav los ntawm kev siv, cov khoom sib kis yuav tsum tau hloov tam sim ntawd los tiv thaiv cov khoom tsis ua hauj lwm.
2. Loose Cabinet Connections: Npog, misalignment, los yog co ntawm lub splicing cov ntsiab lus ntawm lub vijtsam xauj tsev LED feem ntau yog tshwm sim los ntawm hnav sai -lock clips, deformed positioning pins, los yog tsis txaus installation torque. Yog tias qhov dav dav dav dua 1 hli los yog qhov tsis sib haum yog ntau dua 0.5 hli, nws yuav ua rau tsis muaj dej tsis ua haujlwm lossis cov qauv kev ntxhov siab. Tightening kev sib txuas los yog hloov cov khoom puas yog qhov tsim nyog kom muaj kev nyab xeeb.
3. Txo Kev Tiv Thaiv Kev Ntsuas: Hauv qhov chaw sab nraum zoov, yog tias lub vijtsam xauj tsev LED qhia pom cov dej ntws tawm, qhov sib xyaw ua ke, lossis cov lim plua plav plua plav, nws qhia tau tias lub sealant muaj hnub nyoog lossis cov casing tau deformed. Yog tias qhov ntsuas tiv thaiv IP poob qis ntawm IP65 mus rau qis dua IP43, nws tuaj yeem ua rau cov khoom siv hluav taws xob luv luv -circuit vim ya raws. Resealing los yog hloov lub casing yog tsim nyog los rov qab tiv thaiv kev ua tau zoo.
III. Hluav taws xob Safety Risks:
1. Txo Rwb thaiv tsev Resistance: Rwb thaiv tsev tiv thaiv ntawm lub hwj chim qaum thiab cov hlau casing<1MΩ (normally it should be >50MΩ) tuaj yeem ua rau cov dej xau los yog luv luv - Circuit Court txaus ntshai. Cov teeb meem zoo li no feem ntau tshwm sim los ntawm kev laus txuas, kev sib txuas xoob, lossis cov khoom tawg. Lub vijtsam xauj tsev LED yuav tsum raug kaw tam sim ntawd thiab kuaj xyuas cov ntsiab lus tsis raug.
2. Grounding Fault: Grounding wire resistance >0.1Ω lossis cov xaim hauv av tawg yuav ua rau lub peev xwm ua tau tam sim no tsis muaj zog thaum lub sij hawm xob laim lossis xau, ua rau muaj kev phom sij rau cov neeg ua haujlwm nyab xeeb. Yog li ntawd, thaum muaj teeb meem hauv av tshwm sim nyob rau hauv lub vijtsam xauj tsev LED, qhov kev tiv thaiv hauv av yuav tsum tau sim nrog megohmmeter. Yog tias nws dhau tus qauv, cov xaim hauv av yuav tsum tau rov ua dua - soldered lossis hloov lub davhlau ya nyob twg.
Power Module Overheating: A power supply surface temperature >65℃(nquag<50℃) or frequent restarts are usually caused by bulging capacitors, dried-out electrolyte, or aging power components. In this case, the LED rental screen's power module needs to be replaced to avoid cascading failures (such as burnt-out driver ICs).
