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<span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt;"><strong><span lang="EN-US"><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;">2．<span style="FONT: 7pt 'times new roman';">. w, \- v6 @) X' b# Z: a) c
</span></span></b><b><span style="FONT-FAMILY: 宋体;">惠普（<span lang="EN-US">HP） <p></p></span></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）1168PE<span style="mso-spacerun: yes;"> </span>17″纯平<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: 62.95pt; mso-char-indent-count: 5.97; mso-char-indent-size: 10.5pt;"><b><span style="FONT-FAMILY: 宋体;">注意：</span></b><span style="FONT-FAMILY: 宋体;">机壳较为难开，左侧右侧各有两个卡子，同按下才能打开。<span lang="EN-US">
: `' P) \ G+ _0 O5 v% P <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;">开机灯亮，无高压，嗞嗞响。<span lang="EN-US">* H# D$ j& |; U7 d
<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;">变压器次级电压输出低，<span lang="EN-US">12V只有10V，行管升压管都正常，电源部分调节VR，电压无变化，电源无坏件，最后换掉电源芯片6S0765RC，用TP104代替即可，同时注意，C102，控制VR，三极管为达林顿管，阻值为1000多欧。 <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）D2827A<span style="mso-spacerun: yes;"> </span>1518X <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;">开机无光，指示灯亮。（大宇电板）<span lang="EN-US">
/ v C% S F) c6 g& W% T$ l <p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 94.5pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: -94.5pt; mso-char-indent-count: -9.0; mso-char-indent-size: 10.5pt;"><span lang="EN-US" style="FONT-FAMILY: 宋体;"><span style="mso-spacerun: yes;"> </span><b>分析：</b>查高压包FFA81045,行管BU2520,ABL电阻，R504,15K/1/2W, R551, 2.4K/1/4烧，全部更换OK。FFA81045特别爱坏，修时应注意。 <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;"><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;">5．优派 E77I或E771：</span></b><span style="FONT-FAMILY: 宋体;">（源兴电板，源兴电板几乎不会出现虚焊）。<span lang="EN-US">
7 I: g' W6 w6 k1 Y <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;">故障现象：</span></b><span style="FONT-FAMILY: 宋体;">有时能开机，有时不能开机，啪嗒灯亮时灭，但绿灯一直亮，<span lang="EN-US">98下图像抖动，象有一条一闪即过，切F2下也好，但抖动时有一条横线，一闪即过。 <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><span style="mso-spacerun: yes;"> </span>分析：</b>开关不良 <p></p></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 63pt;"><b><span style="FONT-FAMILY: 宋体;">工模：</span></b><span style="FONT-FAMILY: 宋体;">按住“<span lang="EN-US">1”“2”开机，但老板在机器上有跳线。 <p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 63pt;"><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;">6. 宏基 <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 lang="EN-US" style="FONT-FAMILY: 宋体;">(1)77G <p></p></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;">缺蓝色<span lang="EN-US">: U* o2 {0 @& H- J) j
<p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 94.5pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: -94.5pt; mso-char-indent-count: -9.0; mso-char-indent-size: 10.5pt;"><span lang="EN-US" style="FONT-FAMILY: 宋体;"><span style="mso-spacerun: yes;"> </span><b>分析：</b>查篮阴极电压过高，异常，KB极蓝枪短路，KB,77V,KR,KG为52V转换信号通道排除，前后极视放故障，重点查区域故障，跳线断线。 <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>故障现象：</b>绿灯闪 <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><span style="mso-spacerun: yes;"> </span>分析：</b>行管坏，特别注意FB705是否烧坏。 <p></p></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; tab-stops: 18.0pt;"><span lang="EN-US" style="FONT-FAMILY: 宋体;">(2)G774 <p></p></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; tab-stops: 18.0pt;"><b><span style="FONT-FAMILY: 宋体;">故障现象：</span></b><span style="FONT-FAMILY: 宋体;">开机无反应<span lang="EN-US">
7 `3 Z1 T4 L) F, C6 L- g1 Y# e5 ] <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>桥堆，二极管虚焊。 <p></p></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 lang="EN-US" style="FONT-FAMILY: 宋体;">(3)G774 <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><span style="mso-spacerun: yes;"> </span>故障现象:</b>开机无高压，绿灯长亮。 <p></p></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 94.5pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: -94.5pt; mso-char-indent-count: -9.0; mso-char-indent-size: 10.5pt;"><span lang="EN-US" style="FONT-FAMILY: 宋体;"><span style="mso-spacerun: yes;"> </span><b><span style="mso-spacerun: yes;"> </span>分析：</b>B极无激励信号，查行场振荡芯片不工作，VLL已有，查，没有虚焊，换前极视放芯片“L1269”，所以换后正常。 <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><span style="mso-spacerun: yes;"> </span><b><span style="mso-spacerun: yes;"> </span>本机通病：</b>L1269前极视放芯片爱坏，而且行场振荡芯片12V一路，供电限流电阻易虚焊。 <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;"><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;">7．BENQ</span></b><span lang="EN-US" style="FONT-FAMILY: 宋体;">
+ ~2 _; X3 g; T s$ y7 J <p></p></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">1）G775新款 <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><span style="mso-spacerun: yes;"> </span>故障现象：</b>屡烧行管，换行管大约一夜烧掉。 <p></p></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 94.5pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: -94.5pt; mso-char-indent-count: -9.0; mso-char-indent-size: 10.5pt;"><span lang="EN-US" style="FONT-FAMILY: 宋体;"><span style="mso-spacerun: yes;"> </span><b><span style="mso-spacerun: yes;"> </span>分析：</b>开极，在EMC测试软件白场，将对比度亮度调到最大，测行电流570MA，大于正常值，但电路无坏件，改电路，将电路改至400MA，故障排除。 <p></p></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）54E <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;">开机烧一会后不亮。<span lang="EN-US">, o: i+ v }" ~2 l2 P; }0 S& n
<p></p></span></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 94.5pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: -94.5pt; mso-char-indent-count: -9.0; mso-char-indent-size: 10.5pt;"><span lang="EN-US" style="FONT-FAMILY: 宋体;"><span style="mso-spacerun: yes;"> </span><b><span style="mso-spacerun: yes;"> </span>分析：</b>B+反馈到行场振荡的电容221/2000V电容，板子边上烧裂，反馈信号至“4857”（可能1脚）将一路原件烧坏，R214→15K. <p></p></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">3）ACRE 56E： <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>故障现象：</b>开机绿灯亮，无反应。 <p></p></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 94.5pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: -94.5pt; mso-char-indent-count: -9.0; mso-char-indent-size: 10.5pt;"><span lang="EN-US" style="FONT-FAMILY: 宋体;"><span style="mso-spacerun: yes;"> </span><b>分析：</b>行管坏，更换后开机嗞嗞响，可能是二次供电过高，或高压包坏，取下二次升压管，开机正常，无不良，按上二次升压管吸空B+，无声音，证明高压二次升压管很烫，换二次升压电感OK。 <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>注意：</b>该机型，B+电感，高压包易坏，尾板易虚焊。 <p></p></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 94.5pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: -94.5pt; mso-char-indent-count: -9.0; mso-char-indent-size: 10.5pt;"><span lang="EN-US" style="FONT-FAMILY: 宋体;"><span style="mso-spacerun: yes;"> </span><b>工厂模式：</b>оооо A+B 开机，所有灯闪一下，调整完成后再按A+B，保存退出才能存住，更改项的信息。 <p></p></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）77g <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;">开机行宽失调。<span lang="EN-US">
- B4 @8 k( P7 f <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><span style="mso-spacerun: yes;"> </span>分析：</b>VR302老化（板子右侧） <p></p></span></p><p></p></span></strong></span> |
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发表于 2006-9-20 23:32:00
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