{"id":25106,"date":"2011-01-12T09:53:42","date_gmt":"2011-01-12T02:53:42","guid":{"rendered":"https:\/\/banbientan.com\/?p=25106"},"modified":"2011-01-12T09:53:42","modified_gmt":"2011-01-12T02:53:42","slug":"tim-hieu-ve-loi-bien-tan-khong-len-nguon-man-hinh-mua-ban-sua-chua-bien-tan-tai-ha-noi","status":"publish","type":"post","link":"https:\/\/hunglong.banbientan.com\/?p=25106","title":{"rendered":"T\u00ecm hi\u1ec3u v\u1ec1 l\u1ed7i bi\u1ebfn t\u1ea7n kh\u00f4ng l\u00ean ngu\u1ed3n m\u00e0n h\u00ecnh. Mua b\u00e1n s\u1eeda ch\u1eefa bi\u1ebfn t\u1ea7n t\u1ea1i h\u00e0 n\u1ed9i"},"content":{"rendered":"\n<p><a href=\"https:\/\/banbientan.com\/wp-content\/uploads\/2021\/01\/Screenshot-2021-01-12-094828.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-25107\" src=\"https:\/\/banbientan.com\/wp-content\/uploads\/2021\/01\/Screenshot-2021-01-12-094828.jpg\" alt=\"\" width=\"943\" height=\"276\" \/><\/a>Trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng bi\u1ebfn t\u1ea7n th\u00ec nhi\u1ec1u b\u1ea1n th\u01b0\u1eddng g\u1eb7p m\u1ed9t s\u1ed1 l\u1ed7i li\u00ean quan t\u1edbi vi\u1ec7c bi\u1ebfn t\u1ea7n kh\u00f4ng l\u00ean ngu\u1ed3n hay m\u00e0n h\u00ecnh, m\u1eddi c\u00e1c b\u1ea1n tham kh\u1ea3o v\u1ea5n \u0111\u1ec1 n\u00e0y qua b\u00e0i vi\u1ebft sau \u0111\u00e2y.<\/p>\n<h2>Nh\u1eefng nguy\u00ean nh\u00e2n l\u00e0m cho bi\u1ebfn t\u1ea7n kh\u00f4ng l\u00ean ngu\u1ed3n m\u00e0n h\u00ecnh<\/h2>\n<ul>\n<li>Do c\u1ea5p ngu\u1ed3n ch\u01b0a ch\u00ednh x\u00e1c c\u0169ng l\u00e0m cho\u00a0<strong>bi\u1ebfn t\u1ea7n kh\u00f4ng l\u00ean ngu\u1ed3n<\/strong>. C\u00e1c b\u1ea1n ph\u1ea3i ki\u1ec3m tra k\u1ef9 ch\u00e2n n\u00e0o l\u00e0 ch\u00e2n c\u1ea5p ngu\u1ed3n c\u1ee7a bi\u1ebfn t\u1ea7n. Th\u01b0\u1eddng nh\u1eefng ch\u00e2n c\u1ea5p ngu\u1ed3n cho bi\u1ebfn t\u1ea7n th\u01b0\u1eddng k\u00fd hi\u1ec7u l\u00e0 L1 L2 L3. N\u1ebfu tr\u01b0\u1eddng h\u1ee3p ch\u00e2n c\u1ea5p ngu\u1ed3n kh\u00f4ng c\u00f3 c\u00f3 \u0111\u00e1nh s\u1ed1 th\u00ec c\u00e1c b\u1ea1n ph\u1ea3i tham kh\u1ea3o trong manual c\u1ee7a h\u00e3ng \u0111\u1ec3 bi\u1ebft v\u1ecb tr\u00ed c\u1ea5p ngu\u1ed3n cho ch\u00ednh x\u00e1c.<\/li>\n<li>C\u00f3 m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p bi\u1ebfn t\u1ea7n 3 pha 220v m\u00e0 b\u1ea1n c\u1ea5p 1 pha th\u00ec ph\u1ea3i c\u1ea5p \u0111\u00fang pha th\u00ec bi\u1ebfn t\u1ea7n m\u1edbi l\u00ean ngu\u1ed3n. V\u00ed d\u1ee5 nh\u01b0 k\u00fd hi\u1ec7u 3 pha ng\u00f5 v\u00e0o l\u00e0 L1 L2 L3 th\u00ec c\u00e1c b\u1ea1n ph\u1ea3i th\u1eed c\u1ea5p L1 L2 ho\u1eb7c L1 v\u00e0 L3. C\u00f3 m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p bi\u1ebfn t\u1ea7n 380v m\u00e0 c\u1ea5p 220v c\u0169ng s\u1ebd khi\u1ebfn cho bi\u1ebfn t\u1ea7n kh\u00f4ng l\u00ean ngu\u1ed3n.<\/li>\n<li>Do board m\u00e0n h\u00ecnh b\u00e0n ph\u00edm b\u1ecb h\u1ecfng n\u00ean d\u1eabn t\u1edbi kh\u00f4ng hi\u1ec3n th\u1ecb m\u00e0n h\u00ecnh. Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y bi\u1ebfn t\u1ea7n v\u1eabn c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng n\u1ebfu nh\u01b0 m\u00e0n h\u00ecnh b\u1ecb h\u1ecfng. B\u1ea1n th\u1eed b\u1eadt t\u1eaft c\u00f4ng t\u1eafc ho\u1eb7c v\u1eb7n xoay bi\u1ebfn tr\u1edf volume ch\u1ec9nh t\u1ed1c \u0111\u1ed9 xem th\u1eed bi\u1ebfn t\u1ea7n c\u00f3 ho\u1ea1t \u0111\u1ed9ng hay kh\u00f4ng ?<\/li>\n<li>B\u1ea3n th\u00e2n bi\u1ebfn t\u1ea7n b\u1ecb h\u01b0 ph\u1ea7n ngu\u1ed3n \u0111\u00e2y l\u00e0 tr\u01b0\u1eddng h\u1ee3p d\u1ec5 g\u1eb7p nh\u1ea5t. \u0110\u1ed1i v\u1edbi tr\u01b0\u1eddng h\u1ee3p n\u00e0y c\u00e1c b\u1ea1n ph\u1ea3i th\u00e1o b\u00ean trong \u0111\u1ec3 ki\u1ec3m tra chi ti\u1ebft linh ki\u1ec7n board m\u1ea1ch c\u1ee7a bi\u1ebfn t\u1ea7n.<\/li>\n<\/ul>\n<h3>C\u00e1ch x\u1eed l\u00fd khi g\u1eb7p l\u1ed7i bi\u1ebfn t\u1ea7n kh\u00f4ng l\u00ean ngu\u1ed3n m\u00e0n h\u00ecnh<\/h3>\n<ul>\n<li>\u0110\u1ea7u ti\u00ean c\u00e1c b\u1ea1n d\u00f9ng VOM thang \u0111o AC \u0111\u1ec3 ki\u1ec3m tra xem c\u00f3 \u0111i\u1ec7n \u00e1p c\u1ea5p v\u00e0o\u00a0<strong>bi\u1ebfn t\u1ea7n<\/strong>\u00a0hay ch\u01b0a ? do c\u00f3 m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p bi\u1ebfn t\u1ea7n \u0111\u01b0\u1ee3c c\u1ea5p ngu\u1ed3n b\u1eb1ng kh\u1edfi \u0111\u1ed9ng t\u1eeb m\u00e0 n\u1ebfu kh\u1edfi ch\u01b0a \u0111\u00f3ng th\u00ec bi\u1ebfn t\u1ea7n s\u1ebd kh\u00f4ng l\u00ean ngu\u1ed3n.<\/li>\n<li>N\u1ebfu \u0111\u00e3 c\u00f3 ngu\u1ed3n AC \u1edf ng\u00f5 v\u00e0o bi\u1ebfn t\u1ea7n th\u00ec ti\u1ebfp theo b\u1ea1n chuy\u1ec3n VOM sang thang \u0111o DC v\u00e0 \u0111o \u0111i\u1ec7n \u00e1p tr\u00ean DC bus. Th\u01b0\u1eddng tr\u00ean bi\u1ebfn t\u1ea7n th\u01b0\u1eddng k\u00fd hi\u1ec7u ch\u00e2n DC l\u00e0 P v\u00e0 N ho\u1eb7c + v\u00e0 -. N\u1ebfu ngu\u1ed3n DC bus c\u00f3 t\u1ee9c l\u00e0 ph\u1ea7n ngu\u1ed3n v\u00e0o bi\u1ebfn t\u1ea7n \u1ed5n c\u00f2n ng\u01b0\u1ee3c l\u1ea1i \u0111o kh\u00f4ng c\u00f3 DC Bus th\u00ec c\u00e1c b\u1ea1n ki\u1ec3m tra l\u1ea1i ph\u1ea7n linh ki\u1ec7n li\u00ean quan t\u1edbi kh\u1ed1i ngu\u1ed3n v\u00e0o bao g\u1ed3m diode c\u00f4ng su\u1ea5t, t\u1ee5 n\u1ea1p, c\u1ea7u ch\u00ec v\u00e0 \u0111i\u1ec7n tr\u1edf c\u00f4ng su\u1ea5t.<\/li>\n<li>N\u1ebfu \u0111\u00e3 c\u00f3 \u0111i\u1ec7n \u00e1p tr\u00ean bus DC m\u00e0 kh\u00f4ng c\u00f3 ngu\u1ed3n l\u00ean m\u00e0n h\u00ecnh b\u1ea1n ti\u1ebfn h\u00e0nh ki\u1ec3m tra bi\u1ebfn th\u1ebf xung tr\u00ean board \u0111i\u1ec1u khi\u1ec3n v\u00ec \u0111\u00e2y l\u00e0 ngu\u1ed3n c\u1ea5p ch\u00ednh cho board \u0111i\u1ec1u khi\u1ec3n.<\/li>\n<li>C\u00f3 m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p c\u00e1c b\u1ea1n c\u0169ng n\u00ean v\u1ec7 sinh s\u1ea1ch s\u1ebd bi\u1ebfn t\u1ea7n b\u1eb1ng m\u00e1y th\u1ed5i b\u1ee5i, ki\u1ec3m tra l\u1ea1i c\u00e1c jack k\u1ebft n\u1ed1i v\u00ec nh\u1eefng jack n\u00e0y c\u00f3 th\u1ec3 lau ng\u00e0y b\u1ecb b\u1ee5i b\u00e1m v\u00e0o d\u1eabn t\u1edbi ti\u1ebfp x\u00fac \u0111i\u1ec7n kh\u00f4ng t\u1ed1t n\u00ean l\u00e0m cho bi\u1ebfn t\u1ea7n kh\u00f4ng l\u00ean ngu\u1ed3n m\u00e0n h\u00ecnh.<\/li>\n<\/ul>\n<h2>C\u00e1ch ki\u1ec3m tra ph\u1ea7n c\u1ee9ng khi bi\u1ebfn t\u1ea7n b\u1ecb l\u1ed7i kh\u00f4ng l\u00ean ngu\u1ed3n<\/h2>\n<p>\u0110\u1ed1i v\u1edbi tr\u01b0\u1eddng h\u1ee3p bi\u1ebfn t\u1ea7n g\u1eb7p ph\u1ea3i l\u1ed7i kh\u00f4ng l\u00ean ngu\u1ed3n th\u00ec c\u00e1c b\u1ea1n th\u1ef1c hi\u1ec7n c\u00e1c b\u01b0\u1edbc sau \u0111\u00e2y \u0111\u1ec3 ki\u1ec3m tra ph\u1ea7n c\u1ee9ng c\u1ee7a bi\u1ebfn t\u1ea7n:<\/p>\n<ul>\n<li>\u0110\u1ea7u ti\u00ean c\u00e1c b\u1ea1n d\u00f9ng \u0111\u1ed3ng h\u1ed3 \u0111o \u0111i\u1ec7n( VOM) \u0111\u1ec3 ki\u1ec3m tra c\u1ea7u diode c\u1ee7a bi\u1ebfn t\u1ea7n c\u00f3 c\u00f2n ho\u1ea1t \u0111\u1ed9ng t\u1ed1t hay kh\u00f4ng ?<\/li>\n<\/ul>\n<p>Tham kh\u1ea3o:\u00a0<a href=\"https:\/\/banbientan.com\" target=\"_blank\" rel=\"noopener noreferrer\">c\u00e1ch \u0111o diode tr\u00ean bi\u1ebfn t\u1ea7n<\/a><\/p>\n<ul>\n<li>Gi\u1edd b\u1ea1n ki\u1ec3m tra ph\u1ea7n board m\u1ea1ch ngu\u1ed3n b\u00ean trong bi\u1ebfn t\u1ea7n ph\u1ea7n n\u1ed1i v\u1edbi t\u1ee5 \u0111i\u1ec7n diode s\u1ebd c\u00f3 1 c\u1ea7u ch\u00ec. B\u1ea1n \u0111o xem c\u1ea7u ch\u00ec n\u00e0y c\u00f3 b\u1ecb \u0111\u1ee9t hay kh\u00f4ng ? L\u01b0u \u00fd khi c\u1ea7u ch\u00ec b\u1ecb \u0111\u1ee9t kh\u00f4ng t\u1ef1 \u00fd thay b\u1edfi v\u00ec c\u00f3 linh ki\u1ec7n b\u1ecb h\u01b0 h\u1ecfng g\u00e2y ch\u1eadp m\u1ea1ch m\u1edbi l\u00e0m c\u1ea7u ch\u00ec \u0111\u1ee9t n\u1ebfu b\u1ea1n c\u1ed1 t\u00ecnh thay c\u1ea7u ch\u00ec v\u00e0o trong l\u00fac ch\u01b0a t\u00ecm \u0111\u01b0\u1ee3c nguy\u00ean nh\u00e2n h\u01b0 h\u1ecfng c\u00f3 th\u1ec3 l\u00e0m do bi\u1ebfn t\u1ea7n h\u01b0 n\u1eb7ng h\u01a1n.<\/li>\n<li>Sau khi ki\u1ec3m tra diode v\u00e0 c\u1ea7u ch\u00ec th\u00ec c\u00e1c b\u1ea1n ki\u1ec3m tra ph\u1ea7n t\u1ee5 \u0111i\u1ec7n v\u00e0 \u0111i\u1ec7n tr\u1edf n\u1ea1p c\u1ee7a ph\u1ea7n ngu\u1ed3n DC.<\/li>\n<li>N\u1ebfu ki\u1ec3m tra k\u1ef9 c\u00e1c linh ki\u1ec7n n\u00eau tr\u00ean m\u00e0 ch\u01b0a t\u00ecm \u0111\u01b0\u1ee3c l\u1ed7i h\u1ecfng th\u00ec b\u1ea1n c\u00f3 th\u1ec3 ki\u1ec3m tra kh\u1edfi \u0111\u1ed9ng t\u1eeb c\u1ea5p ngu\u1ed3n DC \u0111\u1ed1i v\u1edbi bi\u1ebfn t\u1ea7n lo\u1ea1i l\u1edbn xem ti\u1ebfp \u0111i\u1ec3m c\u00f3 c\u00f2n ho\u1ea1t \u0111\u1ed9ng t\u1ed1t hay kh\u00f4ng ?<\/li>\n<\/ul>\n<p>C\u00f2n \u0111\u1ed1i v\u1edbi bi\u1ebfn t\u1ea7n kh\u00f4ng l\u00ean m\u00e0n h\u00ecnh th\u00ec c\u00f3 th\u1ec3 ki\u1ec3m tra v\u1ec7 sinh l\u1ea1i \u0111\u1ea7u n\u1ed1i jack c\u1eafm t\u1eeb m\u00e0n h\u00ecnh xu\u1ed1ng board ho\u1eb7c th\u1eed thay \u0111\u1ed5i m\u00e0n h\u00ecnh bi\u1ebfn t\u1ea7n kh\u00e1c xem th\u1eed c\u00f3 c\u1ea3i thi\u1ec7n \u0111\u01b0\u1ee3c t\u00ecnh h\u00ecnh hay kh\u00f4ng.<\/p>\n<p>M\u1ecdi chi ti\u1ebft li\u00ean h\u1ec7 v\u1ec1 b\u00e1o gi\u00e1 v\u00e0 h\u1ed7 tr\u1ee3 xin vui l\u00f2ng li\u00ean h\u1ec7 theo th\u00f4ng tin:\u00a0<\/p>\n<p style=\"text-align: center; background: white; margin: 0in 0in 15.6pt 0in;\" align=\"center\"><strong><span style=\"font-family: 'Arial',sans-serif; color: blue; background: white;\">C\u00f4ng ty TNHH \u0111i\u1ec7n v\u00e0 t\u1ef1 \u0111\u1ed9ng h\u00f3a H\u01b0ng Long (Hung Long AE Co.,ltd)<\/span><\/strong><\/p>\n<p style=\"text-align: center; background: white; box-sizing: border-box; font-variant-ligatures: normal; font-variant-caps: normal; orphans: 2; widows: 2; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; word-spacing: 0px; margin: 0in 0in 15.6pt 0in;\" align=\"center\"><b style=\"box-sizing: border-box;\"><span style=\"font-family: 'Arial',sans-serif; color: #666666;\">S\u1ed1 66, Ng\u00f5 282 Kim Giang, Ph\u01b0\u1eddng \u0110\u1ea1i Kim, Qu\u1eadn Ho\u00e0ng Mai, H\u00e0 N\u1ed9i<\/span><\/b><\/p>\n<p style=\"text-align: center; background: white; margin: 0in 0in 15.6pt 0in;\" align=\"center\"><b><span style=\"font-family: 'Arial',sans-serif; color: #666666;\">Mua b\u00e1n, l\u1eafp \u0111\u1eb7t, c\u00e0i \u0111\u1eb7t, s\u1eeda ch\u1eeda Bi\u1ebfn t\u1ea7n v\u00e0 c\u00e1c thi\u1ebft b\u1ecb t\u1ef1 \u0111\u1ed9ng h\u00f3a<\/span><\/b><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":25107,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[44,25,40,42],"class_list":["post-25106","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cau-hoi-ve-bien-tan","tag-bien-tan-cong-nghiep","tag-bien-tan-cu-gia-re","tag-bien-tan-trung-quoc-gia-re","tag-giai-phap-cong-nghe"],"_links":{"self":[{"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/posts\/25106","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=25106"}],"version-history":[{"count":0,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/posts\/25106\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/"}],"wp:attachment":[{"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=25106"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25106"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25106"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}