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<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体;">1. Hiviewell 17″纯平 <p></p></span></b></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体;"><p></p></span></b></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21.1pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.55pt;"><b><span style="FONT-FAMILY: 宋体;">故障现象：</span></b><span style="FONT-FAMILY: 宋体;">开机行宽小不可调<span lang="EN-US">4 P% r% i' @% R: W: R* E' y
<p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: -31.6pt; mso-char-indent-count: -3.0; mso-char-indent-size: 10.5pt;"><b><span style="FONT-FAMILY: 宋体;">分析：</span></b><span style="FONT-FAMILY: 宋体;">查二次阻尼管，行宽管，行宽电容正常，行宽管<span lang="EN-US">B极电容击穿，造成行宽不可调，103/25V。 <p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char;"><span lang="EN-US" style="FONT-FAMILY: 宋体;"><p></p></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体;">2。现代 <p></p></span></b></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体;"><p></p></span></b></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><span style="FONT-FAMILY: 宋体;">（<span lang="EN-US">1）77710 <p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 42.05pt; mso-char-indent-count: 3.99; mso-char-indent-size: 10.5pt;"><b><span style="FONT-FAMILY: 宋体;">故障现象：</span></b><span style="FONT-FAMILY: 宋体;">开机吱吱叫<span lang="EN-US">
) D7 T, r# y' _; v, T8 ` <p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 62.95pt; mso-char-indent-count: 5.97; mso-char-indent-size: 10.5pt;"><b><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'times new roman'; mso-ascii-font-family: 'times new roman';">分析：</span></b><span lang="EN-US"><font face="Times New Roman">B+</font></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'times new roman'; mso-ascii-font-family: 'times new roman';">限流电阻烧，高压包坏。</span><span lang="EN-US"><font face="Times New Roman">
; s& U2 q7 ]# _) a </font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><span style="FONT-FAMILY: 宋体;">（<span lang="EN-US">2）现代15B 15PRO </span></span><b><span lang="EN-US"><font face="Times New Roman"><span style="mso-spacerun: yes;"> </span>! l. Y8 X- ]# b5 z5 j/ K
<p></p></font></span></b></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 42.05pt; mso-char-indent-count: 3.99; mso-char-indent-size: 10.5pt;"><b><span style="FONT-FAMILY: 宋体;">故障现象：</span></b><span style="FONT-FAMILY: 宋体;">烧行管<span lang="EN-US">5 |( S2 a9 s" V( A L
<p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: -31.6pt; mso-char-indent-count: -3.0; mso-char-indent-size: 10.5pt;"><b><span style="FONT-FAMILY: 宋体;">分析：</span></b><span style="FONT-FAMILY: 宋体;">高压包附近加速电容被烧干，更换行管后，一定更此电容，此机易坏压管和一次整流管。<span lang="EN-US"><span style="mso-spacerun: yes;"> </span><p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: -52.5pt; mso-char-indent-count: -4.98; mso-char-indent-size: 10.5pt;"><b><span style="FONT-FAMILY: 宋体;">工厂模式：</span></b><span style="FONT-FAMILY: 宋体;">将<span lang="EN-US"> 501，①⑤短接进入工厂模式修时请用原装信号线，如没有，又开不了机的，将信号口的④与①对地短接。 <p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 21pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: -21pt; mso-char-indent-count: -2.0; mso-char-indent-size: 10.5pt;"><span lang="EN-US" style="FONT-FAMILY: 宋体;"><p></p></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 18pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: -18pt; tab-stops: list 18.0pt; mso-list: l73 level1 lfo18;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体;">1．<span style="FONT: 7pt 'times new roman';">% w, \0 `& B5 z7 \: b6 W
</span></span></b><b><span style="FONT-FAMILY: 宋体;">美格（<span lang="EN-US">MAGE） <p></p></span></span></b></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体;"><p></p></span></b></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><span style="FONT-FAMILY: 宋体;">（<span lang="EN-US">1）796FD<span style="mso-spacerun: yes;"> </span><p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 42.05pt; mso-char-indent-count: 3.99; mso-char-indent-size: 10.5pt;"><b><span style="FONT-FAMILY: 宋体;">故障现象：</span></b><span style="FONT-FAMILY: 宋体;">拍一下屏幕右侧有黑道，有时有，有时无<span lang="EN-US">( D% d$ A# z4 F" _; s a7 r/ l
<p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 63.05pt; mso-char-indent-count: 5.98; mso-char-indent-size: 10.5pt;"><b><span style="FONT-FAMILY: 宋体;">分析：</span></b><span style="FONT-FAMILY: 宋体;">此机为双面板，偏转附近虚焊，双面加焊。<span lang="EN-US">+ Q$ N; B- U- ~0 U+ u
<p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><span style="FONT-FAMILY: 宋体;">（<span lang="EN-US">2）796FDⅡ<span style="mso-spacerun: yes;"> </span><p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 42.05pt; mso-char-indent-count: 3.99; mso-char-indent-size: 10.5pt;"><b><span style="FONT-FAMILY: 宋体;">故障现象：</span></b><span style="FONT-FAMILY: 宋体;">开机嗞嗞叫，无图像<span lang="EN-US">
8 w5 q9 F p2 y. s, I& [ <p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: -31.6pt; mso-char-indent-count: -3.0; mso-char-indent-size: 10.5pt;"><b><span style="FONT-FAMILY: 宋体;">分析：</span></b><span style="FONT-FAMILY: 宋体;">打开后壳，声音位置在电源变压器，重点查电源<span lang="EN-US">VR附近的电阻，39K查无穷大，换调后故障排除。 <p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 20.9pt; mso-char-indent-count: 1.99; mso-char-indent-size: 10.5pt;"><span style="FONT-FAMILY: 宋体;">（<span lang="EN-US">3）XJ770<span style="mso-spacerun: yes;"> </span><p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 42.15pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt;"><b><span style="FONT-FAMILY: 宋体;">故障现象：</span></b><span style="FONT-FAMILY: 宋体;">调菜单时，亮度不可调，其它功能正常。<span lang="EN-US">* V7 }% V( R# P" a7 R r' m- V2 a
<p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 63.25pt; mso-char-indent-count: 6.0; mso-char-indent-size: 10.5pt;"><b><span style="FONT-FAMILY: 宋体;">分析：</span></b><span style="FONT-FAMILY: 宋体;">换<span lang="EN-US">EEPROM。 <p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><span style="FONT-FAMILY: 宋体;">（<span lang="EN-US">4）796FD（双面板） <p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 42.15pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt;"><b><span style="FONT-FAMILY: 宋体;">故障现象：</span></b><span style="FONT-FAMILY: 宋体;">图像右边拍打时出现黑条，竖条。<span lang="EN-US">
$ m+ x7 z: x d$ F: l/ t <p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: -31.6pt; mso-char-indent-count: -3.0; mso-char-indent-size: 10.5pt;"><b><span style="FONT-FAMILY: 宋体;">分析：</span></b><span style="FONT-FAMILY: 宋体;">双面板跳线加焊，加焊后开机无光，查电源输出电压低（各路），换<span lang="EN-US">VC3842，故障依旧，断开光籍初级电源侧开机，有高压，证明与次级相连可控规存在软击穿或击穿故障，换掉后正常。 <p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21.1pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.55pt;"><b><span style="FONT-FAMILY: 宋体;">注意：</span></b><span style="FONT-FAMILY: 宋体;">断开光籍开机不能时间长，否则炸电源，如无高压，后级则有短路。<span lang="EN-US">
- F: U0 E& V& G& l <p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><span style="FONT-FAMILY: 宋体;">（<span lang="EN-US">5）796FD <p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 42.15pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt;"><b><span style="FONT-FAMILY: 宋体;">故障现象：</span></b><span style="FONT-FAMILY: 宋体;">开机烧行管<span lang="EN-US">
6 Z% I5 M# { Y( ` <p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 63.25pt; mso-char-indent-count: 6.0; mso-char-indent-size: 10.5pt;"><b><span style="FONT-FAMILY: 宋体;">分析：</span></b><span style="FONT-FAMILY: 宋体;">逆程电容不良。<span lang="EN-US">1 p9 `7 u! p- e
<p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><span style="FONT-FAMILY: 宋体;">（<span lang="EN-US">6）DJ770E <p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 42.15pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt;"><b><span style="FONT-FAMILY: 宋体;">故 现象：</span></b><span style="FONT-FAMILY: 宋体;">缺色<span lang="EN-US"># ?4 Z7 S" z) ^) M, M) h
<p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 63.25pt; mso-char-indent-count: 6.0; mso-char-indent-size: 10.5pt;"><b><span style="FONT-FAMILY: 宋体;">分析：</span></b><span style="FONT-FAMILY: 宋体;">暗平调节<span lang="EN-US">VR性能不良。 <p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><span style="FONT-FAMILY: 宋体;">（<span lang="EN-US">7）770PF <p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 42.15pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt;"><b><span style="FONT-FAMILY: 宋体;">故障现象：</span></b><span style="FONT-FAMILY: 宋体;">图像忽大忽小<span lang="EN-US">
! n5 V3 n7 [ h, R <p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 63.25pt; mso-char-indent-count: 6.0; mso-char-indent-size: 10.5pt;"><b><span style="FONT-FAMILY: 宋体;">分析：</span></b><span style="FONT-FAMILY: 宋体;">①<span lang="EN-US"> Q410－TIP122 行宽虚焊。 <p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 94.5pt; mso-char-indent-count: 9.0; mso-char-indent-size: 10.5pt;"><span style="FONT-FAMILY: 宋体;">② 一会能开机，一会不能开机<span lang="EN-US">
. ^; G# F& t0 l <p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char;"><span lang="EN-US" style="FONT-FAMILY: 宋体;"><span style="mso-spacerun: yes;"> </span><b>分析：</b>C130坏 <p></p></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 94.5pt; mso-char-indent-count: 9.0; mso-char-indent-size: 10.5pt;"><span style="FONT-FAMILY: 宋体;">③不能开机，开机无反应<span lang="EN-US">! M; i4 c( f4 [5 p$ R6 x V
<p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><span style="FONT-FAMILY: 宋体;">（<span lang="EN-US">8）765 17″液晶 <p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 42.15pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体;"><span style="mso-spacerun: yes;"> </span>故障现象：</span></b><span lang="EN-US" style="FONT-FAMILY: 宋体;">98图像粗糙 <p></p></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char;"><span lang="EN-US" style="FONT-FAMILY: 宋体;"><span style="mso-spacerun: yes;"> </span><b>分析：</b>视频信号线接触不良，重接即好。 <p></p></span></p><p></p><p></p> |
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IP卡
发表于 2006-9-20 23:28:00
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