array(3) { ["data"] => array(20) { [0] => array(11) { ["tagname"] => string(18) "开关电源检修" ["inlink"] => int(0) ["addtime"] => string(10) "1598841681" ["tagid"] => int(772296) ["id"] => string(6) "772296" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703503936560824340) ["pageurl"] => string(35) "//www.sheji456.com/ask/tlist/772296" ["m_pageurl"] => string(33) "//m.sheji456.com/ask/tlist/772296" } [1] => array(11) { ["tagname"] => string(24) "uc3842开关电源设计" ["inlink"] => int(0) ["addtime"] => string(10) "1598841888" ["tagid"] => int(776221) ["id"] => string(6) "776221" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703503936671973383) ["pageurl"] => string(35) "//www.sheji456.com/ask/tlist/776221" ["m_pageurl"] => string(33) "//m.sheji456.com/ask/tlist/776221" } [2] => array(11) { ["tagname"] => string(24) "uc3842开关电源维修" ["inlink"] => int(0) ["addtime"] => string(10) "1598841888" ["tagid"] => int(781766) ["id"] => string(6) "781766" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703503936829259780) ["pageurl"] => string(35) "//www.sheji456.com/ask/tlist/781766" ["m_pageurl"] => string(33) "//m.sheji456.com/ask/tlist/781766" } [3] => array(11) { ["tagname"] => string(24) "uc3842开关电源电路" ["inlink"] => int(0) ["addtime"] => string(10) "1598842477" ["tagid"] => int(803929) ["id"] => string(6) "803929" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703503937455259683) ["pageurl"] => string(35) "//www.sheji456.com/ask/tlist/803929" ["m_pageurl"] => string(33) "//m.sheji456.com/ask/tlist/803929" } [4] => array(11) { ["tagname"] => string(30) "开关电源故障检修方法" ["inlink"] => int(0) ["addtime"] => string(10) "1594371420" ["tagid"] => int(450908) ["id"] => string(6) "450908" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703503925890514976) ["pageurl"] => string(35) "//www.sheji456.com/ask/tlist/450908" ["m_pageurl"] => string(33) "//m.sheji456.com/ask/tlist/450908" } [5] => array(11) { ["tagname"] => string(30) "装修一般是怎样的流程" ["inlink"] => int(0) ["addtime"] => string(10) "1606383927" ["tagid"] => int(5851784) ["id"] => string(7) "5851784" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703504109666041863) ["pageurl"] => string(36) "//www.sheji456.com/ask/tlist/5851784" ["m_pageurl"] => string(34) "//m.sheji456.com/ask/tlist/5851784" } [6] => array(11) { ["tagname"] => string(30) "装修一般是怎样的流程" ["inlink"] => int(0) ["addtime"] => string(10) "1606383927" ["tagid"] => int(5851785) ["id"] => string(7) "5851785" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703504109666041864) ["pageurl"] => string(36) "//www.sheji456.com/ask/tlist/5851785" ["m_pageurl"] => string(34) "//m.sheji456.com/ask/tlist/5851785" } [7] => array(11) { ["tagname"] => string(18) "流程是怎样的" ["inlink"] => int(0) ["addtime"] => string(10) "1599709911" ["tagid"] => int(1323262) ["id"] => string(7) "1323262" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703503955979403272) ["pageurl"] => string(36) "//www.sheji456.com/ask/tlist/1323262" ["m_pageurl"] => string(34) "//m.sheji456.com/ask/tlist/1323262" } [8] => array(11) { ["tagname"] => string(24) "申请流程是怎样的" ["inlink"] => int(0) ["addtime"] => string(10) "1600480630" ["tagid"] => int(1380113) ["id"] => string(7) "1380113" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703503957884665885) ["pageurl"] => string(36) "//www.sheji456.com/ask/tlist/1380113" ["m_pageurl"] => string(34) "//m.sheji456.com/ask/tlist/1380113" } [9] => array(11) { ["tagname"] => string(21) "其流程是怎样的" ["inlink"] => int(0) ["addtime"] => string(10) "1600831090" ["tagid"] => int(1794257) ["id"] => string(7) "1794257" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703503973576605722) ["pageurl"] => string(36) "//www.sheji456.com/ask/tlist/1794257" ["m_pageurl"] => string(34) "//m.sheji456.com/ask/tlist/1794257" } [10] => array(11) { ["tagname"] => string(15) "地漏的检修" ["inlink"] => int(0) ["addtime"] => string(10) "1593421791" ["tagid"] => int(55408) ["id"] => string(5) "55408" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703503910370541573) ["pageurl"] => string(34) "//www.sheji456.com/ask/tlist/55408" ["m_pageurl"] => string(32) "//m.sheji456.com/ask/tlist/55408" } [11] => array(11) { ["tagname"] => string(24) "收房流程是怎样的" ["inlink"] => int(0) ["addtime"] => string(10) "1599530139" ["tagid"] => int(1179654) ["id"] => string(7) "1179654" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703503950327578638) ["pageurl"] => string(36) "//www.sheji456.com/ask/tlist/1179654" ["m_pageurl"] => string(34) "//m.sheji456.com/ask/tlist/1179654" } [12] => array(11) { ["tagname"] => string(24) "家装流程是怎样的" ["inlink"] => int(0) ["addtime"] => string(10) "1604570311" ["tagid"] => int(4611814) ["id"] => string(7) "4611814" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703504068221075477) ["pageurl"] => string(36) "//www.sheji456.com/ask/tlist/4611814" ["m_pageurl"] => string(34) "//m.sheji456.com/ask/tlist/4611814" } [13] => array(11) { ["tagname"] => string(48) "一般的房产工程款支付流程是怎样的" ["inlink"] => int(0) ["addtime"] => string(10) "1599534045" ["tagid"] => int(1194056) ["id"] => string(7) "1194056" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703503950805729301) ["pageurl"] => string(36) "//www.sheji456.com/ask/tlist/1194056" ["m_pageurl"] => string(34) "//m.sheji456.com/ask/tlist/1194056" } [14] => array(11) { ["tagname"] => string(36) "新房装修流程一般是怎样的" ["inlink"] => int(0) ["addtime"] => string(10) "1605661411" ["tagid"] => int(5101482) ["id"] => string(7) "5101482" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703504084712030232) ["pageurl"] => string(36) "//www.sheji456.com/ask/tlist/5101482" ["m_pageurl"] => string(34) "//m.sheji456.com/ask/tlist/5101482" } [15] => array(11) { ["tagname"] => string(54) "大白施工验收流程是怎样的收费是怎样的" ["inlink"] => int(0) ["addtime"] => string(10) "1599534257" ["tagid"] => int(1273579) ["id"] => string(7) "1273579" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703503953546706949) ["pageurl"] => string(36) "//www.sheji456.com/ask/tlist/1273579" ["m_pageurl"] => string(34) "//m.sheji456.com/ask/tlist/1273579" } [16] => array(11) { ["tagname"] => string(33) "酒店的退房流程是怎样的" ["inlink"] => int(0) ["addtime"] => string(10) "1599530139" ["tagid"] => int(1182713) ["id"] => string(7) "1182713" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703503950448164873) ["pageurl"] => string(36) "//www.sheji456.com/ask/tlist/1182713" ["m_pageurl"] => string(34) "//m.sheji456.com/ask/tlist/1182713" } [17] => array(11) { ["tagname"] => string(27) "装修的流程是怎样的" ["inlink"] => int(0) ["addtime"] => string(10) "1606727794" ["tagid"] => int(5986142) ["id"] => string(7) "5986142" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703504114638389262) ["pageurl"] => string(36) "//www.sheji456.com/ask/tlist/5986142" ["m_pageurl"] => string(34) "//m.sheji456.com/ask/tlist/5986142" } [18] => array(11) { ["tagname"] => string(30) "油漆施工流程是怎样的" ["inlink"] => int(0) ["addtime"] => string(10) "1599530139" ["tagid"] => int(1179229) ["id"] => string(7) "1179229" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703503950314995713) ["pageurl"] => string(36) "//www.sheji456.com/ask/tlist/1179229" ["m_pageurl"] => string(34) "//m.sheji456.com/ask/tlist/1179229" } [19] => array(11) { ["tagname"] => string(36) "家具甲醛测试流程是怎样的" ["inlink"] => int(0) ["addtime"] => string(10) "1599530139" ["tagid"] => int(1183299) ["id"] => string(7) "1183299" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703503950465990687) ["pageurl"] => string(36) "//www.sheji456.com/ask/tlist/1183299" ["m_pageurl"] => string(34) "//m.sheji456.com/ask/tlist/1183299" } } ["counts"] => int(602967) ["pagecount"] => float(30149) }

当前位置：首页>

装修问答

其他

开关电源3842检修流程一般是怎样的？

开关电源3842检修流程一般是怎样的？

浏览：38次 | 提问时间： 07-03 04:01

分享到：

3个答案

坏人来了怎么办 07-03 04:01

开关电源3842检修流程
使用3842的开关电源外围大同小异，检修方法基本一样，以下流程检修的前提：开关管无短路，开关管对地限流保护电阻无开路，在通电时开关管不会马上击穿，切记：
1、先测3842(7)脚的15V供电是否正常：
没有电压，就检查启动电阻，或启动电路(部分机型7脚供电使用单独的一个二极管整流)，或7脚对地稳压管短路；
有电压但是高，换(7)脚对地滤波电容，100UF/50V；
有电压但是电压低且波动，3842的调整电路故障。
2、7脚电压正常；关机测300V电压消失速度:
能很快消失，那电源起振，检查(3)脚对地1K电阻和对地稳压管；
电压不消失，故障点为3842未起振，检查3842(1)(2)脚外围电阻、电位器和更换3842自身。3、7脚电压低且波动：
重点检查FBT同步反馈电路的二极管有光耦的机型检查后级光耦输入端，重点检查IC(LM431)周边。

你瞅你那损色冷瞳Remnant 07-03 04:10

开关电源故障检修方法:
1，首先目测电源的电子元件，是否有明显的损坏，比如线路破损，电源炸裂发黑等等；
2、用万用表二极管档，测试保险，整流桥，MOS管，二极管等器件有没有损坏；
3、如果以上都完好，那么再通电进行沿电路的各处电压检测。主要测试的电压点为：
整流桥输出的电压，IC芯片供电引脚的电压，MOS管栅极电压，变压器初级的电压，变压器输出端的电压，输出二极管整流后的电压，输出如果有IC测试供电电压等等。
4、按照以上测试电压之后，在根据具体电压值，比较电压是否正常，然后判断问题所在。

半路友人 07-03 04:18

你是量电源还是量芯片。如果测试电源看看有没有输出就好了如果是测芯片，就在不通电的时候测芯片的所有脚之间有没有短路就差不多可以判定出来了。
希望我的回答对您有所帮助！

装修问答

其他

开关电源3842检修流程一般是怎样的？

最新问题

相关搜索

最新推荐

开关电源3842检修流程一般是怎样的？