Labarai

Abubuwan nunin LED samfuran lantarki ne. Muddin samfuran lantarki ne, babu makawa za su gaza yayin amfani. Don haka menene shawarwari don gyara nunin LED?

Abokan da ke tuntuɓar nunin LED sun san cewa nunin LED an raba su gaba ɗaya ta yanki na samfuran LED. Kamar yadda aka ambata a baya, LED nuni fuska kayayyakin lantarki ne, don haka ainihin tsarinsa shine filin nuni (fitila), PCB (gillar kewayawa), da kuma kula da (IC component surface).

Da yake magana akan tukwici don gyara nunin LED, bari mu fara magana game da kurakuran gama gari da farko. Laifukan gama gari sun haɗa da: “matattu fitilu”, “caterpillars”, ɓangarori masu ɓarna masu launi, ɓangaren baƙaƙen allo, manyan baƙar fata, lambobin garbled, da sauransu.

Don haka ta yaya za a gyara waɗannan kurakuran gama gari? Na farko, shirya kayan aikin gyarawa. Guda biyar na taska don ma'aikacin kulawa na nunin LED: tweezers, bindigar iska mai zafi, ƙarfe na ƙarfe, multimeter, katin gwaji. Sauran kayan taimako sun haɗa da: solder manna (wayar tin), haɓakar ruwa, waya ta jan karfe, manne, da sauransu.

1. Matsala "mataccen haske".

"Hasken matattu" na gida yana nufin gaskiyar cewa ɗaya ko da yawa fitilu a saman fitilar nunin LED ba su da haske. Wannan nau'in rashin haske ya kasu kashi na cikakken lokaci mara haske da gazawar launi. Gabaɗaya, wannan yanayin shine cewa fitilar kanta tana da matsala. Ko dai yana da danshi ko guntuwar RGB ta lalace. Hanyar gyaran mu abu ne mai sauqi qwarai, kawai musanya shi da ƙwanƙolin fitilar fitilar da aka samar da masana'anta. Kayayyakin da ake amfani da su sune tweezers da bindigogin iska mai zafi. Bayan maye gurbin beads ɗin fitilar LED, yi amfani da sake gwada katin gwajin, idan babu matsala, an gyara shi.

2. Matsalar "caterpillar".

“Caterpillar” misali ne kawai, wanda ke nufin lamarin cewa dogon duhu mai haske ya bayyana a wani yanki na saman fitilar lokacin da nunin LED ya kunna kuma babu hanyar shigar da shi, kuma launi galibi ja ne. Tushen wannan al'amari shine yabo na guntu na ciki na fitilar, ko kuma gajeriyar da'ira na layin bututu na IC a bayan fitilar, tsohon shine mafi rinjaye. Gabaɗaya, lokacin da wannan ya faru, kawai muna buƙatar amfani da bindigar iska mai zafi don busa iska mai zafi tare da “caterpillar”. Lokacin da ya busa fitila mai matsala, yana da kyau gabaɗaya, saboda zafi yana haifar da haɗa guntu mai ɗigon ciki. An buɗe shi, amma har yanzu akwai ɓoyayyun haɗari. Mu kawai muna buƙatar nemo ɗigon fitilar fitilar LED, kuma mu maye gurbin wannan ɗigon fitilar ta ɓoye bisa ga hanyar da aka ambata a sama. Idan shi ne ɗan gajeren da'ira na bututun layi a gefen baya na IC, kuna buƙatar amfani da multimeter don auna da'irar IC mai dacewa da kuma maye gurbin shi da sabon IC.

3. Bangaran launi tubalan sun ɓace

Abokan da suka saba da nunin LED tabbas sun ga irin wannan matsala, wato, ƙaramin murabba'i mai launi daban-daban yana bayyana lokacin da nunin LED ke wasa akai-akai, kuma yana da murabba'i. Wannan matsalar gabaɗaya ita ce launin IC da ke bayan katangar launi ya ƙone. Maganin shine maye gurbin shi da sabon IC.

4. partial black allo da babban yanki baki allon

Gabaɗaya magana, baƙar fata yana nufin cewa lokacin da allon nunin LED ke wasa akai-akai, ɗayan ko fiye da na'urorin LED suna nuna al'amarin cewa duk yankin ba shi da haske, kuma yanki na ƴan na'urorin LED ba su da haske. Muna kiran shi allo mai ban sha'awa. Muna kiran ƙarin yankuna. Babban baƙar fata ne. Lokacin da wannan al'amari ya faru, gabaɗaya muna la'akari da yanayin ƙarfin farko. Gabaɗaya, bincika ko alamar wutar lantarki na LED tana aiki kullum. Idan alamar wutar lantarki ba ta da haske, yawanci saboda wutar lantarki ta lalace. Kawai maye gurbin shi da sabo tare da ikon da ya dace. Hakanan ya kamata ku bincika ko igiyar wutar lantarki na ƙirar LED ɗin da ta dace da allon baƙar fata tana kwance. A lokuta da yawa, sake murƙushe zaren shima zai iya magance matsalar allon allo.

5. partal garble

Matsalar lambobin garbled na gida ta fi rikitarwa. Yana nufin al'amari na bazuwar, rashin bin ka'ida, da yuwuwar toshe katangar launi a cikin yanki lokacin da allon nunin LED ke kunne. Lokacin da irin wannan matsala ta faru, yawanci mukan fara magance matsalar haɗin layin sigina, za ku iya bincika ko wayar tafi da gidanka ta kone, ko na'urar sadarwar ta sako-sako, da sauransu. A cikin aikin kulawa, mun gano cewa kebul na aluminum-magnesium waya yana da sauƙi don ƙonewa, yayin da kebul na jan karfe mai tsabta yana da tsawon rai. Idan babu matsala a duba dukan siginar dangane, sa'an nan musanya da matsala LED module tare da kusa al'ada Playing module, za ka iya m hukunci ko zai yiwu cewa LED module m zuwa ga m sake kunnawa yankin lalace, da kuma dalilin lalacewar galibi matsalolin IC ne. , Tsarin kulawa zai zama mafi rikitarwa. Ba zan yi cikakken bayani anan ba.