1. 佳能相機(jī)1d系列換主板教程

自從液晶電視上市以來(lái)，逐漸受到了人們的喜愛(ài)，很多人家里都安裝了液晶電視。和普遍的電視機(jī)相比，液晶電視比較省電、較為環(huán)保。但是對(duì)于電器來(lái)說(shuō)，使用久了，出現(xiàn)故障也在所難免，那么該如何維修呢？

基礎(chǔ)知識(shí)

組成結(jié)構(gòu)

液晶電視機(jī)的組成原理，大體有4個(gè)主要功能模塊電源板，電視主板，邏輯板，背光模塊，以及屏線，遙控器，按鍵輸入和喇叭輸出。

電源板

顧名思義，電源板負(fù)責(zé)整臺(tái)電視的供電。功能好比人的心臟，給人全身輸送能量。如果電源板壞了，就像人的心臟停止跳動(dòng)，電視機(jī)自然就不能工作了。

很多黑屏，背光不亮，指示燈不亮，遙控按鍵不起作用等現(xiàn)象都是因?yàn)殡娫窗骞收弦稹?/p>

電視主板

電視主板是整個(gè)電視機(jī)控制的核心，也可以說(shuō)是電視的大腦。

如果電視主板出現(xiàn)問(wèn)題，可能導(dǎo)致指示燈不亮、或者指示燈顏色異常、遙控按鍵無(wú)響應(yīng)、黑屏、花屏等現(xiàn)象。

邏輯板

邏輯板也稱TCON板，是信號(hào)中轉(zhuǎn)站。負(fù)責(zé)將主板的LVDS信號(hào)轉(zhuǎn)換成屏能處理的TCON信號(hào)。

如果TCON壞了，可能導(dǎo)致畫面黑屏，花屏，條紋干擾，屏閃，屏保等異?，F(xiàn)象。

背光模塊

背光模塊的功能是給電視機(jī)顯示提供背光光源。

如果電視背光不亮，很有可能是背光模塊出現(xiàn)了問(wèn)題。

LVDS信號(hào)線

屏線，又稱差分信號(hào)線。如果接口松動(dòng)，接觸不良，很容易導(dǎo)致黑屏，雪花點(diǎn)干擾，花屏等異?，F(xiàn)象。

注意：4K電視，因?yàn)閿?shù)據(jù)量大，LVDS信號(hào)線已無(wú)法滿足傳輸要求，一般都采用V-BY-ONE的信號(hào)線傳輸。

遙控接收頭

遙控接收頭，也稱IR，負(fù)責(zé)接收遙控器的紅外控制信號(hào)。如果按遙控器沒(méi)有反應(yīng)，可能是遙控接收頭出現(xiàn)問(wèn)題。

按鍵板

如果遙控器可以正常操作，但按鍵板不起作用，估計(jì)是按鍵板或者相關(guān)電路壞了。

三合一板卡

將背光模塊，電源板和電視主板集合到一塊板卡上，俗稱三合一板卡。將背光模塊，電源板和電視主板集合到一塊板卡上，俗稱三合一板卡。

隨著產(chǎn)品的標(biāo)準(zhǔn)和規(guī)范化，電視模塊將越來(lái)越簡(jiǎn)化。目前市面上的電視，里面的模塊基本都簡(jiǎn)化成兩片電路了，一塊三合一主板加一片邏輯板。

工作原理

如上圖，紅色的箭頭是供電電路，藍(lán)色的箭頭是信號(hào)電路。

電源板負(fù)責(zé)將220V交流電壓轉(zhuǎn)換成各個(gè)模塊工作所需的直流電壓；

電視主板負(fù)責(zé)處理按鍵信號(hào)，響應(yīng)遙控器信號(hào)；

控制電源板開關(guān)，直接或間接控制背光模塊；

接收各類視頻信號(hào)，圖像轉(zhuǎn)化成LVDS信號(hào)輸送給邏輯板；

聲音信號(hào)輸出到喇叭；

邏輯板主要功能是將電視主板輸出的LVDS信號(hào)轉(zhuǎn)換成液晶屏能處理的TCON信號(hào)；

背光模塊負(fù)責(zé)給背光燈條供電。

維修常用工具

螺絲刀

螺絲刀是工具，分手動(dòng)或電動(dòng)，用于旋擰（安裝）和旋松（除去）螺釘。

鑷子鉗

夾持導(dǎo)線、元件及集成電路引腳等。

萬(wàn)用表

，萬(wàn)用表又稱為復(fù)用表、多用表、三用表、繁用表等，是電力電子等部門不可缺少的測(cè)量?jī)x表，一般以測(cè)量電壓、電流和電阻為主要目的。

示波器

示波器是一種用途十分廣泛的電子測(cè)量?jī)x器。它能把肉眼看不見(jiàn)的電信號(hào)變換成看得見(jiàn)的圖像，便于人們研究各種電現(xiàn)象的變化過(guò)程。

溫度可調(diào)熱風(fēng)槍

熱風(fēng)槍主要是利用發(fā)熱電阻絲的槍芯吹出的熱風(fēng)來(lái)對(duì)元件進(jìn)行焊接與摘取元件的工具。

電烙鐵

電烙鐵是電子制作和電器維修的必備工具，主要用途是焊接元件及導(dǎo)線。

錫絲

錫絲的特質(zhì)是具有一定的長(zhǎng)度與直徑的錫合金絲，在電子原器件的焊接中可與電烙鐵或激光配合使用。

維修技巧

基本維修的方法

直觀法

肉眼觀察燒黑的地方，看有無(wú)連接線松動(dòng)及元器件擊穿的情況。

觸摸法

用手觸摸關(guān)鍵部件，觀察供電部分發(fā)熱情況(數(shù)字板)，特別是對(duì)老化幾小時(shí)后出現(xiàn)的軟故障情況比較實(shí)用。

問(wèn)題法

了解故障出現(xiàn)的具體狀態(tài)(比如雷擊、打火、冒煙、積水及以及人為操作等)。

測(cè)量法

使用萬(wàn)用表、示波器測(cè)量(有些情況可用指針式萬(wàn)用表交流來(lái)代替示波器測(cè)量一些普通的信號(hào))。

代換法

有條件的情況下，可以代換電源板，數(shù)字板，高頻板，背光板，屏，LVDS數(shù)據(jù)線，軟件等，這種方法維修快。

排除法

縮小檢修范圍，準(zhǔn)確判斷故障位置(如信號(hào)源部分、信號(hào)通道部分)。

邏輯檢修法

該方法要求對(duì)所修板件的信號(hào)流程、電源邏輯關(guān)系非常熟悉，可以確定維修的順序：是先從后級(jí)向前級(jí)檢修，還是單一通道向公共通道檢修等等。

滿足法

先大體確定故障部位后，再檢修部分電路的工作條件是否滿足(特殊情況下可人為制造工作條件)。

對(duì)比法

條件允許的情況下，可以對(duì)比好的板件進(jìn)行檢修，也可以對(duì)比同一板件上相同的電路(對(duì)稱電路)來(lái)進(jìn)行檢修。

先軟件后硬件

軟件涉及的故障范圍廣，但是需要檢修的范圍小，對(duì)于一些軟故障，建議先升級(jí)軟件。

初步檢修流程

維修口訣

液晶維修并不難，工作原理記心間；

電壓來(lái)自電源板，亮度來(lái)自背光源；

信號(hào)處理機(jī)芯板，顯示分配控制板；

5V供電最勤勞，一年四季歇不了；

12V供給機(jī)芯板，中放功放向它看；

24V送到背光板，無(wú)它屏幕缺光源；

機(jī)芯板子是領(lǐng)導(dǎo)，開關(guān)信號(hào)向它要；

電源模塊背光板，電平高開（機(jī)）低關(guān)；

PWM脈沖很重要，少了亮度提不高；

LVDS線要求高，變質(zhì)松動(dòng)有干擾；

液晶電視不普通，程序經(jīng)常鬧罷工；

三天兩天發(fā)神經(jīng)，需要復(fù)位來(lái)擺平；

液晶屏幕很脆弱，要維修時(shí)細(xì)（心）操作

平板維修費(fèi)用高，學(xué)好技術(shù)很辛勞；

賺錢固然很重要，安全二字記心牢。

常見(jiàn)故障分析

顯示器整機(jī)無(wú)電

1、電源故障

這是一個(gè)應(yīng)該說(shuō)是非常簡(jiǎn)單的故障，一般的液晶顯示器分機(jī)內(nèi)電源和機(jī)外電源兩種，機(jī)外的常見(jiàn)一些。不論那種電源，易損的一般是一些小元件，象保險(xiǎn)管、整流橋、300V濾波電容、電源開關(guān)管、電源管理IC、整流輸出二極管、濾波電容等。這些常用的芯片在專業(yè)液晶配件店里都能買到。

2、驅(qū)動(dòng)板故障

驅(qū)動(dòng)板燒保險(xiǎn)或者是穩(wěn)壓芯片出現(xiàn)故障，有部分機(jī)器是把開關(guān)電源內(nèi)置，輸出兩組電源，其中一組是5V，供信號(hào)處理用，另外一組是12V提供高壓板點(diǎn)背光用，如果開關(guān)電源部分電路出現(xiàn)了故障會(huì)有可能導(dǎo)致兩組電源均沒(méi)輸出先查12V電壓正常否，跟著查5V電壓正常否，因?yàn)锳/D驅(qū)動(dòng)板的MCU芯片的工作電壓是5V，所以查找開不了機(jī)的故障時(shí)，先用萬(wàn)用表測(cè)量5V電壓，如果沒(méi)有5V電壓或者5V電壓變得很低，那么一種可能是電源電路輸入級(jí)出現(xiàn)了問(wèn)題，也就是說(shuō)12V轉(zhuǎn)換到5V的電源部分出了問(wèn)題，這種故障很常見(jiàn)檢查5端穩(wěn)壓塊(常見(jiàn)型號(hào)8050SD-LM2596-AIC15-01等)。

另一種可能就是5V的負(fù)載加重了，把5V電壓拉得很低，換一種說(shuō)法就是說(shuō)，后級(jí)的信號(hào)處理電路出了問(wèn)題，有部分電路損壞，引起負(fù)載加重，把5V電壓拉得很低，逐一排查后級(jí)出現(xiàn)問(wèn)題的元件，替換掉出現(xiàn)故障的元件后，5V能恢復(fù)正常，故障一般就此解決，也經(jīng)常遇到5V電壓恢復(fù)正常后還不能正常開機(jī)的，這種情況也有多種原因，一方面是MCU的程序被沖掉可能會(huì)導(dǎo)致不開機(jī)。還有就是MCU本身?yè)p壞，比如說(shuō)MCU的I/O口損壞，使MCU掃描不了按鍵，遇到這種由MCU引起的故障，找硬件的問(wèn)題是沒(méi)有用的，就算你換了MCU也解決不了問(wèn)題，因?yàn)镸CU是需要編程和寫碼的，在沒(méi)辦法找到原廠的AD驅(qū)動(dòng)板替換的情況下，我們只能用通用A/D驅(qū)動(dòng)板代換如151D或161B等。

顯示屏黑屏，無(wú)背光，電源燈綠燈常亮

斜視液晶屏有顯示圖像，是因?yàn)镸CU問(wèn)題造成沒(méi)有輸出開關(guān)控制電壓，可以直接提取3端穩(wěn)壓塊的。

(AIC1084)3.3V代替，修理高壓板的思路(電源保險(xiǎn)絲--開關(guān)控制管--電源管理IC--推挽發(fā)大管--電源開關(guān)管--DA轉(zhuǎn)換電路(儲(chǔ)能電感整流管)--LC升壓電路(升壓變壓器、升壓電容)--耦合電容--燈管。

屏幕亮線，亮帶或者是暗線

這種問(wèn)題，一般是液晶屏的故障。

亮線故障一般是連接液晶屏本體的排線出了問(wèn)題或者某行和列的驅(qū)動(dòng)IC損壞

暗線一般是屏的本體有漏電，或者TAB柔性板連線開路以上兩種問(wèn)題基本上就是給機(jī)器判了死刑了，沒(méi)有維修價(jià)值的，因?yàn)橐粔K屏的價(jià)格太高了。(廣州有專門更換碼片的，收費(fèi)極高，返修率也高)。

花屏或者是白屏

這種問(wèn)題一般是屏的驅(qū)動(dòng)電壓出了問(wèn)題，先換驅(qū)動(dòng)板和驅(qū)屏線試驗(yàn)，若不行檢查屏背板供電電路。

維修思路：驅(qū)動(dòng)板5V轉(zhuǎn)3.3V的穩(wěn)壓塊(AIC1084)是否有供電輸出--屏體驅(qū)動(dòng)板保險(xiǎn)絲(F)-3.3V--DC轉(zhuǎn)換電路--負(fù)壓形成IC(-7V)--行列驅(qū)動(dòng)IC。

AAT1101AM150XN05屏電源管理芯片，損壞后表現(xiàn)為白屏開機(jī)圖像暗淡等。

AAT1164M170EG01新款屏通病，主要用在明基FP71G+液晶顯示器上面。用一段時(shí)間會(huì)白屏、關(guān)機(jī)在開用一段時(shí)間又出現(xiàn)白屏。本芯片為液晶屏高壓產(chǎn)生及管理芯片、明基液晶顯示器常壞、故障為：白屏。

偏色故障

一般可以進(jìn)入工廠調(diào)整模式進(jìn)行調(diào)整。

維修思路：更換屏線和轉(zhuǎn)接板--重寫驅(qū)動(dòng)程序--驅(qū)動(dòng)板壞(不常見(jiàn))--屏背板的控制IC壞(不常見(jiàn))--拔掉屏線觀察背光顏色(背光偏色為燈管老化)--換燈管。

字符虛或拖尾

維修思路：檢查VGA信號(hào)線，重點(diǎn)看RGB三色線的地線是否連接正常--更換屏線或轉(zhuǎn)接板--重寫驅(qū)動(dòng)程序--換驅(qū)動(dòng)板--LCD屏背板信號(hào)接口 IC壞--LCD屏背板對(duì)比度電位器調(diào)整--LCD屏導(dǎo)光板錯(cuò)位--偏光片錯(cuò)位。

LCD屏幕內(nèi)部有污點(diǎn)

維修思路：擦拭或更換換保護(hù)膜--拆開屏體清洗外層偏光片和有機(jī)玻璃(用棉球純凈水處理)--風(fēng)筒吹干。

LCD屏漏光或光線不均

維修思路:重新安裝燈管--調(diào)整導(dǎo)光板。

LCD屏亮點(diǎn)

一個(gè)或二個(gè)大的亮點(diǎn)，可以嘗試輕輕用指尖壓亮點(diǎn)，可消失,說(shuō)明多為此像素的開關(guān)管和電極虛連小的黑點(diǎn)和灰點(diǎn)有可能是內(nèi)部導(dǎo)光板或偏光片有灰塵造成可清洗處理。

LCD屏亮度低

檢查高壓板ADJ亮度調(diào)節(jié)電路--換燈管--換高壓板---調(diào)整或更換導(dǎo)光板。

錯(cuò)誤提示超出頻率范圍

檢查信號(hào)線--重寫MCU驅(qū)動(dòng)程序--更換EPROM--重寫EPROM程序--換驅(qū)動(dòng)板。

通電后不按開關(guān)按鍵即白屏，出現(xiàn)背光按鍵后圖像可正常顯示

高壓板接口的開關(guān)信號(hào)和ADJ信號(hào)反接造成部分屬于驅(qū)動(dòng)板MCU的開關(guān)信號(hào)輸出不正常，可以重寫MCU程序修復(fù)--換MCU。

補(bǔ)充一點(diǎn)，對(duì)于燈管老化的屏更換時(shí)要搞清燈管的尺寸，因?yàn)楸M管屏幕尺寸一樣，但是燈管長(zhǎng)度與粗細(xì)略有差異，在找不到相同尺寸燈管的時(shí)候，如果能用短燈則好，如果不能使用，稍長(zhǎng)的的燈管用手術(shù)刀小心切除屏框，并用熱縮管做好絕緣。

注意事項(xiàng)

電視機(jī)是有電高壓的一種電器，維修時(shí)有關(guān)的安全問(wèn)題一定要注意。

1、打開機(jī)殼：要注意不能用蠻力打開機(jī)殼，如果太緊打不開，一定是還有螺釘或卡扣沒(méi)有松開，要再仔細(xì)找找；拉開機(jī)殼時(shí)有的電視機(jī)電路板與機(jī)殼之間會(huì)有電線相連，要注意不要拉壞，比較好先折下機(jī)殼上固定的電路板；拉開機(jī)殼時(shí)要拿穩(wěn)機(jī)殼，不要脫手掉下，否則容易砸到顯像管管徑，一旦砸斷可就麻煩了。

2、要注意電視機(jī)的“熱地”：有的電視機(jī)的電路板的地是“熱地”，就是與市電沒(méi)有隔離，如果恰巧電視機(jī)的電源插頭又將未隔離的電視機(jī)的“地”端插到市電的“火”線上，那么維修時(shí)如果你不小心碰到電視機(jī)的某個(gè)接“地”的部分，就有觸電的危險(xiǎn)。一方面觸電本身很危險(xiǎn)，另一方面人在觸電時(shí)身體會(huì)發(fā)生不由自主的痙攣，一旦把電視機(jī)拉到地上，就又出大麻煩了。解決這個(gè)問(wèn)題比較好是用隔離變壓器，如果沒(méi)有，比較好在電視機(jī)通電時(shí)能調(diào)整好插頭方向，使電視機(jī)的“地”接到市電的“零”線上，這樣可以使電視機(jī)比較容易碰到的地方不“電”人，但是電視機(jī)里還是有與“火”線相連的強(qiáng)電的，仍然要小心。

3、要注意電視機(jī)內(nèi)的高壓：在更換行輸出變壓器的時(shí)候，一定要用萬(wàn)用表筆或其它導(dǎo)線將顯像管高壓帽下的高壓泄放干凈，否則在摘下高壓連線時(shí)會(huì)受到高壓電擊，同樣比較危險(xiǎn)。

如何保養(yǎng)

1、保持干燥

放置的中央，環(huán)境要保持干燥并遠(yuǎn)離化學(xué)藥品。假如放置環(huán)境濕度很大，電器內(nèi)部就會(huì)結(jié)露，容易形成漏電、短路等。平常使用的發(fā)膠、滅蚊劑等都是高揮發(fā)性化學(xué)品，也會(huì)對(duì)液晶顯現(xiàn)屏形成損傷。

2、亮度調(diào)低

日常使用，盡量防止長(zhǎng)時(shí)間顯現(xiàn)同一張畫面。長(zhǎng)時(shí)間工作容易惹起內(nèi)部老化或燒壞，特別糟糕的是長(zhǎng)時(shí)間內(nèi)顯現(xiàn)同一畫面，可能會(huì)招致某些像素過(guò)熱，形成內(nèi)部產(chǎn)生壞點(diǎn)。而這種損壞不能修復(fù)。因而不用時(shí)應(yīng)該關(guān)閉顯現(xiàn)屏或選擇屏幕保護(hù)程序，或者把顯現(xiàn)屏亮度調(diào)低點(diǎn)。

3、不能頻繁清洗

液晶顯現(xiàn)屏不能頻繁清洗。正確的清潔辦法是拿一塊沾有少許玻璃清潔劑的屏幕擦布，輕力把污跡擦去。注意不要讓清潔劑流到屏幕、屏框接口中，以免出現(xiàn)短路。也不要用硬質(zhì)毛巾擦洗，以免刮花屏幕。還要定時(shí)定量擦洗。

4、制止壞習(xí)氣

杜絕使用壞習(xí)氣。不要用手對(duì)屏幕指指點(diǎn)點(diǎn)。此外變壓器電壓很高，不要在帶電的狀況下翻開屏的后蓋。

%3Chowto_content%3E[{"type":"paragraph","attrs":{"is_abstract":true},"children":[{"type":"text","text":"自從液晶電視上市以來(lái)，逐漸受到了人們的喜愛(ài)，很多人家里都安裝了液晶電視。和普遍的電視機(jī)相比，液晶電視比較省電、較為環(huán)保。但是對(duì)于電器來(lái)說(shuō)，使用久了，出現(xiàn)故障也在所難免，那么該如何維修呢？","id":""}],"text":"","id":"WW8Ide2aGoiCgsxk5encV6gvnkh"},{"type":"heading","attrs":{"level":1},"children":[{"type":"text","text":"基礎(chǔ)知識(shí)","id":""}],"text":"","id":"Zg4sdAmW0oa0Gsx50oLcYGQdnbR"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"組成結(jié)構(gòu)","id":""}],"text":"","id":"Q2qyduGcyoGOuAxkbcycCbuBnlg"},{"type":"paragraph","children":[{"type":"text","text":"液晶電視機(jī)的組成原理，大體有4個(gè)主要功能模塊電源板，電視主板，邏輯板，背光模塊，以及屏線，遙控器，按鍵輸入和喇叭輸出。","id":""}],"text":"","id":"YqSOdSGksoKCkkxgjdpc8VC0nEd"},{"type":"image","attrs":{"height":547,"note":[{"type":"text","text":"組成結(jié)構(gòu)","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/d49597eb3f2f458fb1aacdb8bcdbef9c","width":600},"text":"","id":"KIuGduc4Yo64sGxgDHGcyS0Hnog"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"電源板","id":""}],"text":"","id":"NCcadCGASoIKKaxI1gYcygzZnoc"},{"type":"image","attrs":{"height":382,"note":[{"type":"text","text":"電源板","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/33c208a51667444093165fd7f535bdad","width":640},"text":"","id":"N8OodMuAWo6Y0kxgTEac2Ntdnic"},{"type":"paragraph","children":[{"type":"text","text":"顧名思義，電源板負(fù)責(zé)整臺(tái)電視的供電。功能好比人的心臟，給人全身輸送能量。如果電源板壞了，就像人的心臟停止跳動(dòng)，電視機(jī)自然就不能工作了。","id":""}],"text":"","id":"E2y2dAoKqo22aoxkhhmcxKcinxb"},{"type":"paragraph","children":[{"type":"text","text":"很多黑屏，背光不亮，指示燈不亮，遙控按鍵不起作用等現(xiàn)象都是因?yàn)殡娫窗骞收弦稹?,"id":""}],"text":"","id":"K6S2dK66Uos0mCx6PqTc7rRPnIe"},{"type":"heading","attrs":{"level":3},"children":[{"type":"text","text":"電視主板","id":""}],"text":"","id":"Om6gd4siSo44U6xyplZcfDDQnzX"},{"type":"paragraph","children":[{"type":"text","text":"電視主板是整個(gè)電視機(jī)控制的核心，也可以說(shuō)是電視的大腦。","id":""}],"text":"","id":"HQWQd2WKgoEWIExa0EecUNIln8f"},{"type":"paragraph","children":[{"type":"text","text":"如果電視主板出現(xiàn)問(wèn)題，可能導(dǎo)致指示燈不亮、或者指示燈顏色異常、遙控按鍵無(wú)響應(yīng)、黑屏、花屏等現(xiàn)象。","id":""}],"text":"","id":"OyS4dCMsKoCkwSx8w6qcWrSFnCc"},{"type":"heading","attrs":{"level":3},"children":[{"type":"text","text":"邏輯板","id":""}],"text":"","id":"BAA0dYS4ko8GaExOAlwcSMQzn3f"},{"type":"image","attrs":{"height":200,"note":[{"type":"text","text":"邏輯板","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/6a2ec3b6487a474bb0572cd6b41a6a41","width":476},"text":"","id":"ZgksdK60koWCCuxANPMcX2Ijnuf"},{"type":"paragraph","children":[{"type":"text","text":"","id":""}],"text":"","id":"GKWadUmOWoQK6cxQbUoclY8cn9f"},{"type":"paragraph","children":[{"type":"text","text":"邏輯板也稱TCON板，是信號(hào)中轉(zhuǎn)站。負(fù)責(zé)將主板的LVDS信號(hào)轉(zhuǎn)換成屏能處理的TCON信號(hào)。","id":""}],"text":"","id":"AQKCd4EUoooEGwxwV6EcWW8EnVg"},{"type":"paragraph","children":[{"type":"text","text":"如果TCON壞了，可能導(dǎo)致畫面黑屏，花屏，條紋干擾，屏閃，屏保等異?，F(xiàn)象。","id":""}],"text":"","id":"Nwyud4k2moy8w0xMfDUcsxd2nYf"},{"type":"heading","attrs":{"level":3},"children":[{"type":"text","text":"背光模塊","id":""}],"text":"","id":"W0iudm0eMosGogxEnR0cFf7unhh"},{"type":"image","attrs":{"height":376,"note":[{"type":"text","text":"背光模塊","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/f0a58b74bfb149388085b7d3c065f517","width":640},"text":"","id":"DkCCdyq0eoGMsWxGg10cl1h3nue"},{"type":"paragraph","children":[{"type":"text","text":"背光模塊的功能是給電視機(jī)顯示提供背光光源。","id":""}],"text":"","id":"XgqgdA6eSoamscxGkTEcrEuhn7e"},{"type":"paragraph","children":[{"type":"text","text":"如果電視背光不亮，很有可能是背光模塊出現(xiàn)了問(wèn)題。","id":""}],"text":"","id":"FEMsdQsKaoEuyGxMx62cer6vn8d"},{"type":"heading","attrs":{"level":3},"children":[{"type":"text","text":"LVDS信號(hào)線","id":""}],"text":"","id":"KesmdsScsoMkAaxUZkacXFfanwf"},{"type":"image","attrs":{"height":174,"note":[{"type":"text","text":"LVDS信號(hào)線","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/f2f5112c462f4d7689d15cca1b1d7274","width":288},"text":"","id":"IG2edW4gAoimeMx1qfDc7n8EnbS"},{"type":"paragraph","children":[{"type":"text","text":"","id":""}],"text":"","id":"QM0odQQqaoIgYkxmu1Nc6e2hn7g"},{"type":"paragraph","children":[{"type":"text","text":"屏線，又稱差分信號(hào)線。如果接口松動(dòng)，接觸不良，很容易導(dǎo)致黑屏，雪花點(diǎn)干擾，花屏等異常現(xiàn)象。","id":""}],"text":"","id":"EcUMdCeuMoMgs8x2v7Nc6yronId"},{"type":"paragraph","children":[{"type":"text","text":"注意：4K電視，因?yàn)閿?shù)據(jù)量大，LVDS信號(hào)線已無(wú)法滿足傳輸要求，一般都采用V-BY-ONE的信號(hào)線傳輸。","id":""}],"text":"","id":"HwyGdSIWkoKoiUx06WXcQbkUnOc"},{"type":"heading","attrs":{"level":3},"children":[{"type":"text","text":"遙控接收頭","id":""}],"text":"","id":"D8OCduQagoGUkmxCK1hc1UlanHg"},{"type":"image","attrs":{"height":386,"note":[{"type":"text","text":"遙控接收頭","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/81b73b4097b34fa7bd7d91fc61b8ffbe","width":640},"text":"","id":"K2iYdKsC6oggeMxOInhcnIq1nCe"},{"type":"paragraph","chil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"text":"示波器","id":""}],"text":"","id":"QYM2dQySeomqkGxQh56cEy5Gn9e"},{"type":"paragraph","children":[{"type":"text","text":"示波器是一種用途十分廣泛的電子測(cè)量?jī)x器。它能把肉眼看不見(jiàn)的電信號(hào)變換成看得見(jiàn)的圖像，便于人們研究各種電現(xiàn)象的變化過(guò)程。","id":""}],"text":"","id":"GqImdCkCqomwYKxSQzxczW75nTb"},{"type":"image","attrs":{"height":683,"note":[{"type":"text","text":"維修常用工具","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/3977407aa4cb4be4b12c7ebf713e417d","width":1024},"text":"","id":"PswqdGKCyoYOosxCy92cwPjtnqg"},{"type":"paragraph","children":[{"type":"text","text":"","id":""}],"text":"","id":"Tm6edSUWYoOQYexsBL6cOnkDn1e"},{"type":"paragraph","children":[{"type":"text","text":"溫度可調(diào)熱風(fēng)槍","id":""}],"text":"","id":"VSwodUeEeoyOCCxs5E1cgSNHnbd"},{"type":"paragraph","children":[{"type":"text","text":"熱風(fēng)槍主要是利用發(fā)熱電阻絲的槍芯吹出的熱風(fēng)來(lái)對(duì)元件進(jìn)行焊接與摘取元件的工具。","id":""}],"text":"","id":"K0wadmiIUoQMI0xyi9scB2Ggnrc"},{"type":"image","attrs":{"height":679,"note":[{"type":"text","text":"維修常用工具","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/b7c81689038147c983fd273fbb410d08","width":1018},"text":"","id":"JugQd26wgoGiaoxs3BzcIydynId"},{"type":"paragraph","children":[{"type":"text","text":"電烙鐵","id":""}],"text":"","id":"JqQwdAOYQoOgyuxC4sJc97s9nkc"},{"type":"paragraph","children":[{"type":"text","text":"電烙鐵是電子制作和電器維修的必備工具，主要用途是焊接元件及導(dǎo)線。","id":""}],"text":"","id":"FYsud4G6IoO8cSx6ICZcctMXnyh"},{"type":"image","attrs":{"height":683,"note":[{"type":"text","text":"維修常用工具","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/d4ce7a8a760b4fefbcf19b2bd83fcb22","width":1024},"text":"","id":"Zciid2CQooUICwxmMQMchCNMnof"},{"type":"paragraph","children":[{"type":"text","text":"錫絲","id":""}],"text":"","id":"I0IsduGI0oi6G2xegctcDyNsn3e"},{"type":"paragraph","children":[{"type":"text","text":"錫絲的特質(zhì)是具有一定的長(zhǎng)度與直徑的錫合金絲，在電子原器件的焊接中可與電烙鐵或激光配合使用。","id":""}],"text":"","id":"NYEkdg8qmouQwcxsFZCcKZjXn7e"},{"type":"image","attrs":{"height":683,"note":[{"type":"text","text":"維修常用工具","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/2f401202f6df4376b8b88702cd7c245a","width":1024},"text":"","id":"Ro2Ud0Gy2oGyg4x2pDCcVClknWb"},{"type":"paragraph","children":[{"type":"text","text":"","id":""}],"text":"","id":"JCK6doqCwoceMOxGiPwchFLrnRT"},{"type":"heading","attrs":{"level":1},"children":[{"type":"text","text":"維修技巧","id":""}],"text":"","id":"WWa0dgaMMoI4esxaDjqcwHWQnfb"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"基本維修的方法","id":""}],"text":"","id":"DUM0dKGkkogkGoxewKgcNQQnnRc"},{"type":"heading","attrs":{"level":3},"children":[{"type":"text","text":"直觀法","id":""}],"text":"","id":"ImWadgS2aoko62xcRsXc5Bb8npS"},{"type":"paragraph","children":[{"type":"text","text":"肉眼觀察燒黑的地方，看有無(wú)連接線松動(dòng)及元器件擊穿的情況。","id":""}],"text":"","id":"TsAYd4M02oCKOqxcjK3cA1Udnve"},{"type":"image","attrs":{"height":512,"note":[{"type":"text","text":"直觀法","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/eca6e30dd9ac4659bb69af6ca9d4a5ac","width":768},"text":"","id":"Da4idSkAsoA2mAxa3xicwxtBndb"},{"type":"heading","attrs":{"level":3},"children":[{"type":"text","text":"觸摸法","id":""}],"text":"","id":"OQGsd8QiqoeYKcx8LzdcseNDnce"},{"type":"paragraph","children":[{"type":"text","text":"用手觸摸關(guān)鍵部件，觀察供電部分發(fā)熱情況(數(shù)字板)，特別是對(duì)老化幾小時(shí)后出現(xiàn)的軟故障情況比較實(shí)用。","id":""}],"text":"","id":"UiisdwKIoooCmWxi4gfcJXmlnbd"},{"type":"image","attrs":{"height":800,"note":[{"type":"text","text":"觸摸法","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/70e987bee28e461aabab23337cc2c5c6","width":1200},"text":"","id":"I8QmdwIICoOkeOxiiidcFLTCnFf"},{"type":"heading","attrs":{"level":3},"children":[{"type":"text","text":"問(wèn)題法","id":""}],"text":"","id":"MW6kdMwyQoKoOExCIqLcOWOsn3d"},{"type":"paragraph","children":[{"type":"text","text":"了解故障出現(xiàn)的具體狀態(tài)(比如雷擊、打火、冒煙、積水及以及人為操作等)。","id":""}],"text":"","id":"Bg26d0suuoia2kxs913chW3Snzc"},{"type":"heading","attrs":{"level":3},"children":[{"type":"text","text":"測(cè)量法","id":""}],"text":"","id":"UisUd4WUooeE8sxCSXRcIje6nch"},{"type":"paragraph","children":[{"type":"text","text":"使用萬(wàn)用表、示波器測(cè)量(有些情況可用指針式萬(wàn)用表交流來(lái)代替示波器測(cè)量一些普通的信號(hào))。","id":""}],"text":"","id":"FG0GdCAYsoMS8qxeulPc1OUPnSf"},{"type":"image","attrs":{"height":683,"note":[{"type":"text","text":"測(cè)量法","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/0c4cd5fba2f4493e9dc90232236e2d7d","width":1024},"text":"","id":"H4CIdgMskoegMcxQTcfcX1rlnwe"},{"type":"heading","attrs":{"level":3},"children":[{"type":"text","text":"代換法","id":""}],"text":"","id":"DKgwdyGmiou4qWxwPZQcGlMPn3f"},{"type":"paragraph","children":[{"type":"text","text":"有條件的情況下，可以代換電源板，數(shù)字板，高頻板，背光板，屏，LVDS數(shù)據(jù)線，軟件等，這種方法維修快。","id":""}],"text":"","id":"Jwu8dsc60oiSM6xKSDGciY7dnrh"},{"type":"heading","attrs":{"level":3},"children":[{"type":"text","text":"排除法","id":""}],"text":"","id":"OMYCd0CGaoKqkMx2nPGc99ZpnLe"},{"type":"pa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":"一般可以進(jìn)入工廠調(diào)整模式進(jìn)行調(diào)整。","id":""}],"text":"","id":"KAwwd8GmcoMgQoxJOl6cUuWingX"},{"type":"paragraph","children":[{"type":"text","text":"維修思路：更換屏線和轉(zhuǎn)接板--重寫驅(qū)動(dòng)程序--驅(qū)動(dòng)板壞(不常見(jiàn))--屏背板的控制IC壞(不常見(jiàn))--拔掉屏線觀察背光顏色(","id":""},{"type":"text","text":"背光偏色","id":""},{"type":"text","text":"為燈管老化)--換燈管。","id":""}],"text":"","id":"OE2EdwMqAo22G0x2hsKcJpSYnYf"},{"type":"image","attrs":{"height":595,"note":[{"type":"text","text":"偏色故障","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/682812f3a52745ab9015c2bdb8a8ffca","width":892},"text":"","id":"R2aAd6qASoCwSqx2DfncS7VlnFb"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"字符虛或拖尾","id":""}],"text":"","id":"QS0Ydw8IkomMO0xQDMicNxRVnid"},{"type":"paragraph","children":[{"type":"text","text":"維修思路：檢查VGA信號(hào)線，重點(diǎn)看RGB三色線的地線是否連接正常--更換屏線或轉(zhuǎn)接板--重寫驅(qū)動(dòng)程序--換驅(qū)動(dòng)板--LCD屏背板信號(hào)接口 IC壞--LCD屏背板對(duì)比度電位器調(diào)整--LCD屏導(dǎo)光板錯(cuò)位--偏光片錯(cuò)位。","id":""}],"text":"","id":"D0KUdse84ouMuQxGGovcCqUWnHf"},{"type":"image","attrs":{"height":683,"note":[{"type":"text","text":"字符虛或拖尾","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/49e51c98340e47e8b7bfb8076eb3684a","width":1024},"text":"","id":"Dyu2dmkEsoSiimxyOIScRdQ8nHh"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"LCD屏幕內(nèi)部有污點(diǎn)","id":""}],"text":"","id":"WIyKdkuCuoI2MqxSkyZcRKEcnMg"},{"type":"paragraph","children":[{"type":"text","text":"維修思路：擦拭或更換換保護(hù)膜--拆開屏體清洗外層偏光片和有機(jī)玻璃(用棉球純凈水處理)--風(fēng)筒吹干。","id":""}],"text":"","id":"Ygi2dkiY4oO6sExAXsycPzo6nSc"},{"type":"image","attrs":{"height":746,"note":[{"type":"text","text":"LCD屏幕內(nèi)部有污點(diǎn)","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/3411022d6b21474aa77b1f139bcb0fcf","width":1119},"text":"","id":"EAUGdQi4yoaaY4xEFqIcBxQrnKd"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"LCD屏漏光或光線不均","id":""}],"text":"","id":"O4KWdaCcio8gqGxuGtWcl6ktnVc"},{"type":"paragraph","children":[{"type":"text","text":"維修思路:重新安裝燈管--調(diào)整導(dǎo)光板。","id":""}],"text":"","id":"EgYMdOAgOosEU8xu8BJclmLjnqg"},{"type":"image","attrs":{"height":575,"note":[{"type":"text","text":"LCD屏漏光或光線不均","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/4f1fae90dd7f4885875a98b12d344c37","width":862},"text":"","id":"KaA2dmCEQocMuwxaEhlcgUhwnKd"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"LCD屏亮點(diǎn)","id":""}],"text":"","id":"RQE0dwIycoAK2ax2hmVc4DIWn2c"},{"type":"paragraph","children":[{"type":"text","text":"一個(gè)或二個(gè)大的亮點(diǎn)，可以嘗試輕輕用指尖壓亮點(diǎn)，可消失,說(shuō)明多為此像素的開關(guān)管和電極虛連小的黑點(diǎn)和灰點(diǎn)有可能是內(nèi)部導(dǎo)光板或偏光片有灰塵造成可清洗處理。","id":""}],"text":"","id":"BCQUdoykSoGQcAxh5gQcr7XenxI"},{"type":"image","attrs":{"height":720,"note":[{"type":"text","text":"LCD屏亮點(diǎn)","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/39e02217bd5d47d88ba8642545866e1b","width":1080},"text":"","id":"CEgKd8sgWosqEmxG8gBcswkynme"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"LCD屏亮度低","id":""}],"text":"","id":"GOQmdYWuioG6KExmKzJcaD6anVh"},{"type":"paragraph","children":[{"type":"text","text":"檢查高壓板ADJ亮度調(diào)節(jié)電路--換燈管--換高壓板---調(diào)整或更換導(dǎo)光板。","id":""}],"text":"","id":"PIgCdkW6eoKeEAxA1K6cYRjknzh"},{"type":"image","attrs":{"height":720,"note":[{"type":"text","text":"LCD屏亮度低","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/d2f309cae5554291ad52f0a37e78fa36","width":1080},"text":"","id":"PMYMdWGmqoKiQMxUzJ5cZG7bnBf"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"錯(cuò)誤提示超出頻率范圍","id":""}],"text":"","id":"UKkGdaY0UoYoeKx0AVLcATRRnTb"},{"type":"paragraph","children":[{"type":"text","text":"檢查信號(hào)線--重寫MCU驅(qū)動(dòng)程序--更換EPROM--重寫EPROM程序--換驅(qū)動(dòng)板。","id":""}],"text":"","id":"MAEMd8Mywom02Ox6f52cPjNondb"},{"type":"image","attrs":{"height":683,"note":[{"type":"text","text":"錯(cuò)誤提示超出頻率范圍","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/ddcfcfe2eef44b059d28fdf4aff6f628","width":1024},"text":"","id":"QoYidAMsMo2gk4xye2Bchj7nn0f"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"通電后不按開關(guān)按鍵即白屏，出現(xiàn)背光按鍵后圖像可正常顯示","id":""}],"text":"","id":"OqYsdU2e6oCMuuxGCkRcnqnpnne"},{"type":"paragraph","children":[{"type":"text","text":"高壓板接口的開關(guān)信號(hào)和ADJ信號(hào)反接造成部分屬于驅(qū)動(dòng)板MCU的開關(guān)信號(hào)輸出不正常，可以重寫MCU程序修復(fù)--換MCU。","id":""}],"text":"","id":"UOw0dACO4oKkYIxeQAFcx3sfnVf"},{"type":"paragraph","children":[{"type":"text","text":"補(bǔ)充一點(diǎn)，對(duì)于燈管老化的屏更換時(shí)要搞清燈管的尺寸，因?yàn)楸M管屏幕尺寸一樣，但是燈管長(zhǎng)度與粗細(xì)略有差異，在找不到相同尺寸燈管的時(shí)候，如果能用短燈則好，如果不能使用，稍長(zhǎng)的的燈管用手術(shù)刀小心切除屏框，并用熱縮管做好絕緣。","id":""}],"text":"","id":"UyU8dEUCaoUWygxc98xcWNPknee"},{"type":"image","attrs":{"height":483,"note":[{"type":"text","text":"通電后不按開關(guān)按鍵即白屏，出現(xiàn)背光按鍵后圖像可正常顯示","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/e69eef55771b48e7bbf6ebcdc5b0165c","width":725},"text":"","id":"FkEQdQikyouEcMx2xS3chyPon8d"},{"type":"heading","attrs":{"level":1},"children":[{"type":"text","text":"注意事項(xiàng)","id":""}],"text":"","id":"GAsmd4agGouIk2x43LCc4WoTnRg"},{"type":"paragraph","children":[{"type":"text","text":"電視機(jī)是有電高壓的一種電器，維修時(shí)有關(guān)的安全問(wèn)題一定要注意。","id":""}],"text":"","id":"YCaIdiMsSogi28xUdokcdns6nng"},{"type":"paragraph","children":[{"type":"text","text":"1、打開機(jī)殼：要注意不能用蠻力打開機(jī)殼，如果太緊打不開，一定是還有螺釘或卡扣沒(méi)有松開，要再仔細(xì)找找；拉開機(jī)殼時(shí)有的電視機(jī)電路板與機(jī)殼之間會(huì)有電線相連，要注意不要拉壞，比較好先折下機(jī)殼上固定的電路板；拉開機(jī)殼時(shí)要拿穩(wěn)機(jī)殼，不要脫手掉下，否則容易砸到顯像管管徑，一旦砸斷可就麻煩了。","id":""}],"text":"","id":"RG2KdeSkco0eAKxIN1TcdXBFneg"},{"type":"image","attrs":{"height":888,"note":[{"type":"text","text":"注意事項(xiàng)","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/3541dbd8ad7a44cab04154722ed2ea1b","width":1332},"text":"","id":"HcUGdoY4GoEOYxxSOaVcjAjbnio"},{"type":"paragraph","children":[{"type":"text","text":"2、要注意電視機(jī)的“熱地”：有的電視機(jī)的電路板的地是“熱地”，就是與市電沒(méi)有隔離，如果恰巧電視機(jī)的電源插頭又將未隔離的電視機(jī)的“地”端插到市電的“火”線上，那么維修時(shí)如果你不小心碰到電視機(jī)的某個(gè)接“地”的部分，就有觸電的危險(xiǎn)。一方面觸電本身很危險(xiǎn)，另一方面人在觸電時(shí)身體會(huì)發(fā)生不由自主的痙攣，一旦把電視機(jī)拉到地上，就又出大麻煩了。解決這個(gè)問(wèn)題比較好是用隔離變壓器，如果沒(méi)有，比較好在電視機(jī)通電時(shí)能調(diào)整好插頭方向，使電視機(jī)的“地”接到市電的“零”線上，這樣可以使電視機(jī)比較容易碰到的地方不“電”人，但是電視機(jī)里還是有與“火”線相連的強(qiáng)電的，仍然要小心。","id":""}],"text":"","id":"YEMOdOAAwomg86xkPm3cBlyqnEe"},{"type":"image","attrs":{"height":682,"note":[{"type":"text","text":"注意事項(xiàng)","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/e970d754d0ab4531b80dbfe870179d92","width":1024},"text":"","id":"SeQOdeAgUoYeucxXA1NcWhdHniE"},{"type":"paragraph","children":[{"type":"text","text":"3、要注意電視機(jī)內(nèi)的高壓：在更換行輸出變壓器的時(shí)候，一定要用萬(wàn)用表筆或其它導(dǎo)線將顯像管高壓帽下的高壓泄放干凈，否則在摘下高壓連線時(shí)會(huì)受到高壓電擊，同樣比較危險(xiǎn)。","id":""}],"text":"","id":"TE2WdG8MgoUkOUxUDBNcZVgnnLV"},{"type":"image","attrs":{"height":683,"note":[{"type":"text","text":"注意事項(xiàng)","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/3d725834cf604f28a031e3d43eccc47f","width":1024},"text":"","id":"KeMGdIuYioCEyGxWMP9c3GeTnqh"},{"type":"heading","attrs":{"level":1},"children":[{"type":"text","text":"如何保養(yǎng)","id":""}],"text":"","id":"Z6QEdMcCuoamSqxUh4rcvQvEnSe"},{"type":"paragraph","children":[{"type":"text","text":"1、保持干燥","id":""}],"text":"","id":"Uq6qdkaMyoi0AgxobSVcuh03nhc"},{"type":"paragraph","children":[{"type":"text","text":"放置的中央，環(huán)境要保持干燥并遠(yuǎn)離化學(xué)藥品。假如放置環(huán)境濕度很大，電器內(nèi)部就會(huì)結(jié)露，容易形成漏電、短路等。平常使用的發(fā)膠、滅蚊劑等都是高揮發(fā)性化學(xué)品，也會(huì)對(duì)液晶顯現(xiàn)屏形成損傷。","id":""}],"text":"","id":"SQkMdwWcSoSIqmxCen9cYGrQnTg"},{"type":"paragraph","children":[{"type":"text","text":"2、亮度調(diào)低","id":""}],"text":"","id":"GmA2dmAcQoIgS6xcTwycWgUXn8g"},{"type":"paragraph","children":[{"type":"text","text":"日常使用，盡量防止長(zhǎng)時(shí)間顯現(xiàn)同一張畫面。長(zhǎng)時(shí)間工作容易惹起內(nèi)部老化或燒壞，特別糟糕的是長(zhǎng)時(shí)間內(nèi)顯現(xiàn)同一畫面，可能會(huì)招致某些像素過(guò)熱，形成內(nèi)部產(chǎn)生壞點(diǎn)。而這種損壞不能修復(fù)。因而不用時(shí)應(yīng)該關(guān)閉顯現(xiàn)屏或選擇屏幕保護(hù)程序，或者把顯現(xiàn)屏亮度調(diào)低點(diǎn)。","id":""}],"text":"","id":"SeyYdg6moo2qSwxAdYKchuc0nRb"},{"type":"paragraph","children":[{"type":"text","text":"3、不能頻繁清洗","id":""}],"text":"","id":"N848dWgAmomgIOxk7BLcs9wcnsd"},{"type":"paragraph","children":[{"type":"text","text":"液晶顯現(xiàn)屏不能頻繁清洗。正確的清潔辦法是拿一塊沾有少許玻璃清潔劑的屏幕擦布，輕力把污跡擦去。注意不要讓清潔劑流到屏幕、屏框接口中，以免出現(xiàn)短路。也不要用硬質(zhì)毛巾擦洗，以免刮花屏幕。還要定時(shí)定量擦洗。","id":""}],"text":"","id":"HcMadkiiooWOkcxKaNackUibnKe"},{"type":"paragraph","children":[{"type":"text","text":"4、制止壞習(xí)氣","id":""}],"text":"","id":"UquIdAgkYoM22axczmCckeQ6nzg"},{"type":"paragraph","children":[{"type":"text","text":"杜絕使用壞習(xí)氣。不要用手對(duì)屏幕指指點(diǎn)點(diǎn)。此外變壓器電壓很高，不要在帶電的狀況下翻開屏的后蓋。","id":""}],"text":"","id":"IEuGdMIkUo68QoxmAQdcM5DWnbc"},{"type":"paragraph","children":[{"type":"text","text":"","id":""}],"text":"","id":"I8mydKKoWoei8exM3hYcwT4BnJc"}]%3C%2Fhowto_content%3E

2. 佳能單反換主板

打印機(jī)啟動(dòng)時(shí)沒(méi)有反應(yīng)，或者無(wú)法啟動(dòng)系統(tǒng)，或者直接開不了機(jī)。

這種情況主板問(wèn)題占絕大多數(shù)，可測(cè)主板主芯片的兩個(gè)電源對(duì)地測(cè)量值是否正常、過(guò)流保險(xiǎn)是否損壞、電機(jī)驅(qū)動(dòng)及電源芯片是否損壞。同時(shí)打印頭也未必是好的，可以對(duì)打印頭進(jìn)行快速檢測(cè)。

2、無(wú)法通電，插電不顯示運(yùn)轉(zhuǎn)。

檢查插線沒(méi)有故障后，就可以鎖定是主板的原因了。主板內(nèi)部出了很大的故障才會(huì)有這種情況。

3、開機(jī)后自動(dòng)關(guān)機(jī)。

開機(jī)后自檢或使用過(guò)程中關(guān)機(jī)，隨后或隔一段時(shí)間可以再開機(jī)。這種情況可以先檢測(cè)打印頭排除打印頭損壞因素，然后可以更換電源插座或電源線排除電力連接不穩(wěn)定的因素。

4、打印速度變慢、走走停停、間歇打印、雙閃6次或8次

3. 單反相機(jī)換主板多少錢

單反相機(jī)的鏡頭如果被摔一下的話，要看損壞的程度。如果只是輕微的劃痕不影響使用的話，是不用維修的。如果鏡頭損傷可以去維修商，那你去換個(gè)鏡片即可。如果是主板損傷，那么就要更換主板，價(jià)格較貴一些。如果維修的價(jià)格已經(jīng)和鏡頭本身的價(jià)格相似的話，還是建議換個(gè)新鏡頭。

4. 相機(jī)更換主板

1、電池沒(méi)電了，給電池充電或換一塊電池試試。

2、電池槽觸點(diǎn)故障，電池槽內(nèi)的觸點(diǎn)因電池漏液或者機(jī)器浸液出現(xiàn)氧化，與電池不能連接，會(huì)導(dǎo)致無(wú)法開機(jī)，檢查方法是，給相機(jī)安裝有電的電池，仍然無(wú)法開機(jī)，打開電池槽可以看到電池觸點(diǎn)有黃綠色的銹跡，說(shuō)明電池槽觸點(diǎn)故障。 解決方法是去售后維修站更換維修或者更換卡槽觸點(diǎn)。

3、相機(jī)是否進(jìn)水或摔過(guò)，導(dǎo)致內(nèi)部配件損壞。這個(gè)要找售后廠家維修。

4、電源開關(guān)或者主板故障，相機(jī)電源開關(guān)或者機(jī)器主板故障也會(huì)導(dǎo)致相機(jī)無(wú)法開機(jī)。解決方法是去售后維修站檢測(cè)維修。

5. 佳能打印機(jī)換主板教程

挺貴的

噴墨打印機(jī)主板壞了就劃不來(lái)修了 佳能速度快愛(ài)普生色彩好 如果注重顏色建議換愛(ài)普生吧 修主板一般都兩三五百不等 而且佳能墨盒墨容量少還容易堵塞 經(jīng)常出問(wèn)題。

6. 佳能1dx快門更換

一般來(lái)說(shuō)，快門鍵是沒(méi)有圖標(biāo)的。

所以，需要看看單反的上方哪個(gè)按鈕沒(méi)有圖標(biāo)，而且按鈕的面積大一些，基本就是它了。大部分的快門鍵都位于相機(jī)使用時(shí)候的右手食指附近，通常都是圓形的按鈕。比如佳能單反的快門鍵在右側(cè)的上方，相對(duì)其他按鈕來(lái)說(shuō)，比較大的那個(gè)就是快門鍵。

7. 佳能相機(jī)1d系列換主板教程圖解

謝謝邀請(qǐng)。這是主板自檢循環(huán)的原因，電腦每次開機(jī)主板都要自檢一次，看是否所有部件都待命完畢，才會(huì)開始進(jìn)入硬盤引導(dǎo)，然后進(jìn)系統(tǒng)。

如果自檢過(guò)不了，或者不停的在某個(gè)地方循環(huán)，從而從新自檢，屏幕也無(wú)法點(diǎn)亮。

解決方法：可以上診斷卡，查看主板跑碼，到底問(wèn)題出現(xiàn)在什么地方，再進(jìn)一步針對(duì)性的解決。

如果沒(méi)有診斷卡：把內(nèi)存換到另一個(gè)插槽、BIOS重置、壓橋、清塵。

運(yùn)氣好的話，或許可以解決。

運(yùn)氣不好的話，只能上診斷卡、萬(wàn)用表等。----------------------分割------------------可以導(dǎo)致這個(gè)故障的原因非常之多，因?yàn)槿魏我粋€(gè)環(huán)節(jié)不正常，都可以導(dǎo)致主板自檢過(guò)不了，或一直循環(huán)著。

但是你的只是時(shí)間問(wèn)題，就會(huì)能過(guò)自檢。

由此判斷可能性極高是：內(nèi)存、CPU、橋、晶振。

8. 佳能相機(jī)1d系列換主板教程視頻

這是主板自檢循環(huán)的原因，電腦每次開機(jī)主板都要自檢一次，看是否所有部件都待命完畢，才會(huì)開始進(jìn)入硬盤引導(dǎo)，然后進(jìn)系統(tǒng)。

如果自檢過(guò)不了，或者不停的在某個(gè)地方循環(huán)，從而從新自檢，屏幕也無(wú)法點(diǎn)亮。

解決方法：可以上診斷卡，查看主板跑碼，到底問(wèn)題出現(xiàn)在什么地方，再進(jìn)一步針對(duì)性的解決。

如果沒(méi)有診斷卡：把內(nèi)存換到另一個(gè)插槽、BIOS重置、壓橋、清塵。

運(yùn)氣好的話，或許可以解決。

運(yùn)氣不好的話，只能上診斷卡、萬(wàn)用表等。----------------------分割------------------可以導(dǎo)致這個(gè)故障的原因非常之多，因?yàn)槿魏我粋€(gè)環(huán)節(jié)不正常，都可以導(dǎo)致主板自檢過(guò)不了，或一直循環(huán)著。

但是你的只是時(shí)間問(wèn)題，就會(huì)能過(guò)自檢。

由此判斷可能性極高是：內(nèi)存、CPU、橋、晶振。