LED Screen Failure Analysis

 

LED Screen Failure Analysis

 

LED npo yog ib hom tshiab ntawm cov khoom siv hluav taws xob uas ua los ntawm lub teeb-emitting diodes teem nyob rau hauv ib ntus. Vim nws lub siab ci ntsa iab, pom lub kaum ntse ntse thiab lub neej ntev, nws tau siv dav hauv cov ntxaij vab tshaus sab nraum zoov thiab lwm yam khoom siv.

Txoj kev ncaj ncees tshaj plaws thiab ua tau zoo ntawm LED tshuaj ntsuam xyuas qhov txhaum yog txoj kev tshem tawm, thiab lub vijtsam zaub yog tsim los ntawm peb yam khoom siv loj: tswj daim npav, pawg thawj coj saib, thiab hloov lub zog. Ua ntej tshaj plaws: peb txiav txim siab seb daim npav tswj tau zoo, koj ua ntej saib lub hwj chim ntawm, seb daim npav tswj qhov taw qhia tau teeb, yog tias tsis yog, saib seb puas muaj 5V fais fab mov, seb lub vijtsam tuaj yeem tso saib cov ntsiab lus, ntev npaum li cov ntsiab lus tuaj yeem tso tawm, nws txhais tau tias daim npav tswj hwm cov ntsiab lus ua haujlwm zoo; Tom qab ntawd koj siv daim npav tswj software txhawm rau nrhiav daim npav tswj, yog tias koj tuaj yeem nrhiav tau, nws txhais tau hais tias kev ua haujlwm ntawm daim npav tswj kev xa cov ntsiab lus yog qhov zoo, yog tias koj nrhiav tsis tau, koj pom tias cov kab sib txuas tau txuas nrog. , yog tias nws txuas nrog, tej zaum yuav muaj teeb meem nrog daim npav. Tsuav yog ob txoj haujlwm no zoo, daim npav tswj tau zoo, txwv tsis pub daim npav tswj yuav tsum tau hloov. Thib ob; Peb yuav tsum txiav txim siab seb lub hwj huam mov puas zoo, yog tias lub hwj chim tawg lawm, nws yuav ncaj qha ua rau ob peb lub rooj tsav tsheb tsis muaj teeb meem los yog txawv txav tib lub sij hawm, vim hais tias lub hwj huam mov yog tswj tau ob peb lub rooj tsavxwm tib lub sij hawm, uas. yog, yog tias koj lub vijtsam zaub nyob rau tib thaj chaw me me ntawm ntau lub rooj tsav xwm tsis tso tawm lossis tso tawm txawv txav, koj yuav tsum xav txog seb lub hwj chim puas tawg, txoj kev tshawb pom ncaj qha tshaj plaws yog coj lub multimeter DC voltage theem los ntsuas seb qhov tso zis. voltage yog nruab nrab ntawm 4.9 ~ 5.5V. Yog tias muaj, hloov cov khoom siv hluav taws xob. Thaum kawg: peb xav txiav txim seb lub rooj tsav xwm hauv tsev puas zoo, lub teeb liab LED puv xim teeb liab yog lub teeb liab tawm ntawm cov zis tawm ntawm ib lub rooj tsavxwm mus rau lwm lub rooj tsavxwm, yog li yog tias muaj teeb meem nrog lub rooj tsavxwm, nws yuav ua rau tag nrho kab tom qab nws yuav tsis ci los yog txawv txav, yog li thaum muaj teeb meem nrog lub vijtsam zaub, peb yuav tsum hloov lub rooj tsavxwm uas pib txawv txav hauv kab no, lossis dhia lub rooj tsavxwm no nrog cov kab ntev ntawm cov xov hlau, thiab tom qab ntawd saib yog tias lub rooj tsavxwm tom qab nws tau tshwm sim ib txwm.