led燈燒燈珠維修 led燈閃一下就不亮了故障解決方法 |
| 發布時間:2022-09-23 12:30:13 |
大家好(hao)我(wo)是小編(bian)榮(rong)姐今天我(wo)們來介紹led燈燒燈珠維修 led燈閃一(yi)下(xia)就不亮了故障解決方(fang)法的(de)問題(ti)(ti)，以下(xia)就是榮(rong)姐對此(ci)問題(ti)(ti)和相關問題(ti)(ti)的(de)歸納整理,一(yi)起來看(kan)看(kan)吧。 文章目錄導航: 條形led燈壞了怎么維修 1、LED燈珠損壞。這是(shi)很(hen)常見(jian)的(de)故障(zhang)，一(yi)般LED燈珠燒(shao)壞時，表面上會有黑點，仔細觀(guan)察能夠區分(fen)出來，對(dui)于這種故障(zhang)維(wei)修，需要配備一(yi)把(ba)烙鐵，將燒(shao)壞的(de)燈珠拆下來更換即可，若(ruo)(ruo)沒有LED燈珠怎么辦(ban)可使用150Ω左右的(de)電阻(zu)代替，若(ruo)(ruo)是(shi)恒流源驅動可以直接(jie)短(duan)接(jie)。 2、濾(lv)波電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)失效。簡易的(de)LED燈一般將(jiang)交流電(dian)(dian)(dian)(dian)經過容(rong)(rong)(rong)(rong)阻降壓(ya)后直(zhi)接整(zheng)流，然(ran)后通過電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)濾(lv)波給LED燈珠供電(dian)(dian)(dian)(dian)。若(ruo)該(gai)(gai)(gai)濾(lv)波電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)失效會(hui)導致電(dian)(dian)(dian)(dian)壓(ya)不穩，直(zhi)流電(dian)(dian)(dian)(dian)壓(ya)偏低，從而使LED燈變暗。用萬用表(biao)的(de)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)檔測量(liang)該(gai)(gai)(gai)濾(lv)波電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)的(de)容(rong)(rong)(rong)(rong)量(liang)，若(ruo)誤差較大，誤差大于30%左右說明該(gai)(gai)(gai)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)已變質，找一個(ge)耐壓(ya)值(zhi)以(yi)及容(rong)(rong)(rong)(rong)量(liang)都(dou)大于等于該(gai)(gai)(gai)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)參數的(de)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)換上即可。 3、容(rong)(rong)(rong)阻(zu)(zu)降壓模塊(kuai)損壞，容(rong)(rong)(rong)阻(zu)(zu)降壓模塊(kuai)由(you)一個電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)和電(dian)(dian)(dian)(dian)阻(zu)(zu)并聯組成，可用萬用表測量其電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)、電(dian)(dian)(dian)(dian)阻(zu)(zu)是否損壞，若(ruo)損壞，找(zhao)個參數相當的電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)、電(dian)(dian)(dian)(dian)阻(zu)(zu)換上即可。
LED燈一閃就不亮了這該怎么維修 LED燈由恒(heng)流驅動電(dian)路和燈珠兩(liang)部(bu)分組(zu)成，這種燈常見的故障就是燈珠損壞和電(dian)源濾波電(dian)容損壞（恒(heng)流驅動電(dian)路中的恒(heng)流IC很少損壞），若(ruo)提問者(zhe)懂電(dian)子技術(shu)，可以自己動手修理。 一、LED燈珠損壞 LED燈(deng)泡(pao)一(yi)般(ban)密封較嚴，燈(deng)珠(zhu)在密閉空間里(li)長時間工(gong)作，若燈(deng)珠(zhu)的(de)工(gong)作電(dian)流(liu)較大(da)，并且散熱不(bu)(bu)好，燈(deng)珠(zhu)容易因過熱而損壞(huai)(huai)。有(you)些燈(deng)珠(zhu)處于(yu)臨界損壞(huai)(huai)狀態，接通電(dian)源瞬間可(ke)能因電(dian)流(liu)的(de)沖(chong)擊，閃一(yi)下就壞(huai)(huai)了，由于(yu)LED燈(deng)珠(zhu)一(yi)般(ban)為多(duo)個(ge)燈(deng)珠(zhu)串聯，這樣損壞(huai)(huai)一(yi)個(ge)，就會導致整串燈(deng)珠(zhu)不(bu)(bu)亮。 一(yi)般(ban)燒壞的LED燈(deng)珠(zhu)上(shang)面有(you)黑點（見上(shang)圖），若(ruo)手里有(you)相(xiang)同規格的燈(deng)珠(zhu)，可以將壞的燈(deng)珠(zhu)拆下(xia)，換(huan)個新(xin)的即可。若(ruo)沒有(you)燈(deng)珠(zhu)，亦可以選用一(yi)個十(shi)幾Ω以下(xia)的小(xiao)電阻焊接(jie)在原來燈(deng)珠(zhu)的位置。 二、恒流驅動電路的故障 現在的LED燈泡(pao)(pao)一(yi)般(ban)都(dou)采用專用的恒(heng)流(liu)(liu)(liu)IC構成恒(heng)流(liu)(liu)(liu)驅動(dong)電(dian)(dian)(dian)路(lu)。這類(lei)恒(heng)流(liu)(liu)(liu)驅動(dong)電(dian)(dian)(dian)路(lu)中的恒(heng)流(liu)(liu)(liu)IC、電(dian)(dian)(dian)感線圈及整流(liu)(liu)(liu)管(guan)一(yi)般(ban)很少損(sun)(sun)壞(huai)，容(rong)(rong)易損(sun)(sun)壞(huai)的元(yuan)件就是那個高壓濾波(bo)電(dian)(dian)(dian)容(rong)(rong)。這類(lei)電(dian)(dian)(dian)容(rong)(rong)皆為電(dian)(dian)(dian)解電(dian)(dian)(dian)容(rong)(rong)，有些燈泡(pao)(pao)濾波(bo)電(dian)(dian)(dian)容(rong)(rong)的耐壓值選的較低，若交(jiao)流(liu)(liu)(liu)220V電(dian)(dian)(dian)壓偏高，可(ke)能會(hui)導致(zhi)該電(dian)(dian)(dian)容(rong)(rong)擊穿(chuan)損(sun)(sun)壞(huai)，這樣(yang)恒(heng)流(liu)(liu)(liu)驅動(dong)電(dian)(dian)(dian)路(lu)無法正常工作，燈也就不會(hui)點亮了。遇(yu)到電(dian)(dian)(dian)源(yuan)濾波(bo)電(dian)(dian)(dian)容(rong)(rong)損(sun)(sun)壞(huai)，可(ke)以選用相同容(rong)(rong)量，耐壓值不低于原電(dian)(dian)(dian)容(rong)(rong)的電(dian)(dian)(dian)解電(dian)(dian)(dian)容(rong)(rong)代換。 若想了解更多(duo)的電(dian)(dian)子電(dian)(dian)路及元器件知識， 客廳的LED燈珠經常被燒壞該怎么修理電路需串聯一個多大的電阻 客廳(ting)里的LED燈的燈珠(zhu)(zhu)(zhu)經常被燒壞，出現這(zhe)種情況(kuang)一(yi)般(ban)是LED燈珠(zhu)(zhu)(zhu)的驅(qu)動電流(liu)偏(pian)大，再加(jia)上燈珠(zhu)(zhu)(zhu)可能(neng)散(san)熱不好，這(zhe)樣便會導致燈珠(zhu)(zhu)(zhu)燒壞。 簡單(dan)的阻容降壓恒流(liu)驅(qu)動電路(lu)。 現在的(de)LED燈(deng)(deng)(deng)質量(liang)好(hao)的(de)其(qi)恒(heng)流驅(qu)(qu)(qu)動(dong)器一(yi)般(ban)都(dou)采(cai)用(yong)專用(yong)的(de)恒(heng)流驅(qu)(qu)(qu)動(dong)IC設(she)計，驅(qu)(qu)(qu)動(dong)電流比較穩定，一(yi)般(ban)不容易損壞，而一(yi)些廉價(jia)的(de)LED燈(deng)(deng)(deng)有(you)不少都(dou)是采(cai)用(yong)上圖(tu)所示的(de)簡單的(de)阻容降壓恒(heng)流驅(qu)(qu)(qu)動(dong)電路。這種驅(qu)(qu)(qu)動(dong)電路的(de)驅(qu)(qu)(qu)動(dong)電流不太穩定，其(qi)大(da)(da)小與(yu)電容C1的(de)容量(liang)、市(shi)電電壓的(de)高低有(you)關。若遇到市(shi)電電壓偏高，或C1取值偏大(da)(da)，這樣(yang)便會(hui)導致流過燈(deng)(deng)(deng)珠的(de)電流變(bian)大(da)(da)，而LED燈(deng)(deng)(deng)珠在燈(deng)(deng)(deng)罩內，若燈(deng)(deng)(deng)珠的(de)散熱不好(hao)，工作時間一(yi)長便可能會(hui)被燒(shao)壞。 簡單的(de)LED恒(heng)流驅(qu)(qu)(qu)動(dong)電路板(ban)。 出(chu)現這種情(qing)況，我們可(ke)(ke)以用(yong)萬用(yong)表測量(liang)一(yi)下(xia)市電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)壓(ya)是否偏高，降(jiang)壓(ya)電(dian)(dian)(dian)(dian)容(rong)(rong)的容(rong)(rong)量(liang)與燈(deng)珠(zhu)的工(gong)作電(dian)(dian)(dian)(dian)流(liu)是否匹配。若所(suo)在地區的市電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)壓(ya)經常(chang)偏高，可(ke)(ke)以將電(dian)(dian)(dian)(dian)容(rong)(rong)C1的容(rong)(rong)量(liang)適當減小一(yi)些。為了防止(zhi)開燈(deng)瞬間浪涌電(dian)(dian)(dian)(dian)流(liu)損(sun)壞(huai)燈(deng)珠(zhu)，亦可(ke)(ke)以適當增大電(dian)(dian)(dian)(dian)容(rong)(rong)C2的容(rong)(rong)量(liang)。另外，若C1找不到(dao)合(he)適容(rong)(rong)量(liang)的電(dian)(dian)(dian)(dian)容(rong)(rong)，亦可(ke)(ke)以在C2兩端并聯一(yi)個阻(zu)值及功率合(he)適的電(dian)(dian)(dian)(dian)阻(zu)（具體阻(zu)值視實際情(qing)況而(er)定），這樣可(ke)(ke)以對(dui)流(liu)入(ru)LED燈(deng)珠(zhu)的電(dian)(dian)(dian)(dian)流(liu)進行(xing)分流(liu)，從(cong)而(er)減小燈(deng)珠(zhu)的工(gong)作電(dian)(dian)(dian)(dian)流(liu)，降(jiang)低其發熱量(liang)。 若想了(le)解更多的電(dian)子電(dian)路及元(yuan)器件知識， led燈珠擊穿了怎么修好 把燈(deng)(deng)珠去掉(diao)后，在用(yong)(yong)(yong)電烙鐵把它(ta)串聯(lian)上(shang)就(jiu)行了。LED燈(deng)(deng)珠分為貼(tie)片型和插腳(jiao)(jiao)型，新型吸頂(ding)燈(deng)(deng)或LED燈(deng)(deng)泡(pao)，使用(yong)(yong)(yong)的都是(shi)貼(tie)片型。如果是(shi)單個(ge)燈(deng)(deng)，比如電器(qi)指示(shi)燈(deng)(deng)，使用(yong)(yong)(yong)的都是(shi)插腳(jiao)(jiao)型。 插(cha)(cha)腳型(xing)燈(deng)珠(zhu)先用(yong)(yong)電烙鐵將(jiang)老舊燈(deng)珠(zhu)加熱取下，再將(jiang)新的燈(deng)珠(zhu)插(cha)(cha)上，用(yong)(yong)錫條焊接(jie)。 貼(tie)片型(xing)燈(deng)珠(zhu)(zhu)(zhu)安裝(zhuang)時使用(yong)熱(re)風機，如果沒有的(de)話，就(jiu)用(yong)電烙鐵或吹(chui)風機最熱(re)檔(dang)，對老舊(jiu)燈(deng)珠(zhu)(zhu)(zhu)背面加熱(re)，取下后(hou)放上新(xin)的(de)燈(deng)珠(zhu)(zhu)(zhu)，等待冷(leng)卻即可。無(wu)論是(shi)(shi)哪種燈(deng)珠(zhu)(zhu)(zhu)，在安裝(zhuang)時一定要注意，燈(deng)珠(zhu)(zhu)(zhu)需(xu)要區分正負極，無(wu)論是(shi)(shi)插(cha)腳型(xing)還是(shi)(shi)貼(tie)片型(xing)，帶有小孔的(de)一端是(shi)(shi)負極。 led燈珠壞了怎么修理 用萬(wan)用表100歐或10歐檔，電筆頭測(ce)量每(mei)個(ge)LED電珠(zhu)(注(zhu)意(yi)正負極，反(fan)接不亮)，好(hao)的燈珠(zhu)會亮，壞的不亮或很暗(an)。如果串(chuan)聯電珠(zhu)，將這(zhe)顆(ke)壞電珠(zhu)短接焊(han)接即OK。 以上就是天成小編對于led燈燒(shao)燈珠維(wei)修(xiu) led燈閃一下(xia)就不亮了故障解決(jue)方法問題和(he)相關問題的解答了，希望對你有(you)用 【責任編輯：榮姐】 |
