{"id":27437,"date":"2023-04-13T10:45:36","date_gmt":"2023-04-13T03:45:36","guid":{"rendered":"https:\/\/hocvienit.vn\/?p=27437"},"modified":"2024-06-28T18:38:14","modified_gmt":"2024-06-28T11:38:14","slug":"pan-benh-may-dell-5548-khong-kich-duoc-nguon","status":"publish","type":"post","link":"https:\/\/hocvienit.vn\/?p=27437","title":{"rendered":"Pan b\u1ec7nh: M\u00e1y Dell 5548 kh\u00f4ng k\u00edch \u0111\u01b0\u1ee3c ngu\u1ed3n"},"content":{"rendered":"

T\u00ecnh tr\u1ea1ng m\u00e1y kh\u00f4ng k\u00edch \u0111\u01b0\u1ee3c ngu\u1ed3n l\u00e0 m\u1ed9t trong nh\u1eefng pan b\u1ec7nh th\u01b0\u1eddng g\u1eb7p v\u1edbi k\u1ef9 thu\u1eadt vi\u00ean s\u1eeda ch\u1eefa m\u00e1y t\u00ednh chuy\u00ean nghi\u1ec7p. Nh\u1eb1m h\u1ed7 tr\u1ee3 c\u00e1c b\u1ea1n k\u1ef9 thu\u1eadt vi\u00ean c\u00f3 th\u1ec3 nhanh ch\u00f3ng s\u1eeda ch\u1eefa ch\u00ednh x\u00e1c nh\u1eefng pan b\u1ec7nh ph\u1ed5 bi\u1ebfn tr\u00ean m\u00e1y t\u00ednh, HLV. Tr\u01b0\u01a1ng V\u0103n Sinh chia s\u1ebb t\u1edbi c\u00e1c b\u1ea1n c\u00e1ch b\u1eaft b\u1ec7nh m\u00e1y Dell 5548 kh\u00f4ng k\u00edch \u0111\u01b0\u1ee3c ngu\u1ed3n, kh\u00f4ng m\u1edf ngu\u1ed3n \u0111\u1ea7u v\u00e0o<\/strong>.<\/span><\/p>\n

\"Pan
Pan b\u1ec7nh: M\u00e1y Dell 5548 kh\u00f4ng k\u00edch \u0111\u01b0\u1ee3c ngu\u1ed3n<\/span><\/figcaption><\/figure>\n
\n

Xem th\u00eam: <\/span>Pan b\u1ec7nh: M\u00e1y MBX 250 (S0203-2) c\u00f3 3V5V kh\u00f4ng k\u00edch \u0111\u01b0\u1ee3c ngu\u1ed3n<\/span><\/a><\/span><\/p>\n<\/blockquote>\n

T\u00ecnh tr\u1ea1ng l\u1ed7i<\/strong><\/span><\/h2>\n

M\u00e1y <\/span>Dell 5548 <\/span>kh\u00f4ng nh\u1eadn s\u1ea1c, kh\u00f4ng k\u00edch \u0111\u01b0\u1ee3c ngu\u1ed3n, kh\u00f4ng m\u1edf ngu\u1ed3n \u0111\u1ea7u v\u00e0o.<\/span><\/span><\/p>\n

\n

C\u00f3 th\u1ec3 b\u1ea1n quan t\u00e2m: <\/span>HLV. D\u01b0\u01a1ng \u0110\u1ee9c Hi\u1ebfu h\u01b0\u1edbng d\u1eabn kh\u1eafc ph\u1ee5c l\u1ed7i m\u00e0n h\u00ecnh t\u1ed1i m\u1edd, \u00e2m b\u1ea3n<\/span><\/a><\/span><\/p>\n<\/blockquote>\n

Quy tr\u00ecnh b\u1eaft b\u1ec7nh\u00a0m\u00e1y Dell 5548 kh\u00f4ng k\u00edch \u0111\u01b0\u1ee3c ngu\u1ed3n c\u1ee7a chuy\u00ean gia<\/strong><\/span><\/h2>\n

HLV. Tr\u01b0\u01a1ng V\u0103n Sinh ti\u1ebfn h\u00e0nh b\u1eaft b\u1ec7nh m\u00e1y Dell 5548 kh\u00f4ng k\u00edch \u0111\u01b0\u1ee3c ngu\u1ed3n, kh\u00f4ng m\u1edf ngu\u1ed3n \u0111\u1ea7u v\u00e0o nh\u01b0 sau:<\/span><\/p>\n

1. \u0110\u1ea7u ti\u00ean, chuy\u00ean gia ti\u1ebfn h\u00e0nh x\u1ea3 pin CMOS th\u1ea5y m\u00e1y t\u00ecnh tr\u1ea1ng v\u1eabn l\u1ed7i nh\u01b0 c\u0169.<\/span><\/p>\n

2. Sau \u0111\u00f3, chuy\u00ean gia \u0111o ngu\u1ed3n \u0111\u1ea7u v\u00e0o \u1edf \u0111i\u1ec7n tr\u1edf sense d\u00f2ng s\u1ea1c PR702 th\u1ea5y c\u00f3 \u00e1p h\u01a1n 1V (\u0110\u00e2y ch\u00ednh l\u00e0 d\u1ea5u hi\u1ec7u gi\u00fap chuy\u00ean gia nh\u1eadn bi\u1ebft b\u1ec7nh m\u00e1y m\u1ea5t ngu\u1ed3n \u0111\u1ea7u v\u00e0o).<\/span><\/p>\n

3. Chuy\u00ean gia \u0111o \u0111\u1ea1c ki\u1ec3m tra nh\u01b0ng kh\u00f4ng th\u1ea5y ch\u1eadp ngu\u1ed3n.<\/span><\/p>\n

4. Ti\u1ebfp \u0111\u1ebfn, chuy\u00ean gia k\u1eb9p panh v\u00e0o PQ701, k\u00edch th\u1eed th\u1ea5y m\u00e1y k\u00edch b\u00ecnh th\u01b0\u1eddng. \u0110o ch\u00e2n G v\u00e0 S c\u1ee7a PQ700 v\u00e0 PQ701 b\u1eb1ng \u00e1p nhau v\u00e0 b\u1eb1ng 19V. T\u1eeb \u0111\u00e2y, chuy\u00ean gia suy lu\u1eadn ra l\u00e0 m\u00e1y l\u1ed7i quanh khu v\u1ef1c \u0111\u1ea7u v\u00e0o.<\/span><\/p>\n

\"Con
Con PQ700 tr\u00ean s\u01a1 \u0111\u1ed3 m\u1ea1ch<\/span><\/figcaption><\/figure>\n

5. Theo l\u00fd thuy\u1ebft, ngu\u1ed3n \u0111\u1ea7u v\u00e0o do IC s\u1ea1c ISL9520 \u0111\u01b0a ra l\u1ec7nh cho c\u1eb7p fet PQ700 v\u00e0 PQ701 m\u1edf \u00e1p v\u00e0o n\u00ean chuy\u00ean gia ki\u1ec3m tra \u0111i\u1ec1u ki\u1ec7n IC s\u1ea1c th\u1ea5y k\u1ebft qu\u1ea3 nh\u01b0 sau:<\/span><\/p>\n

+ Pin 2 (DC_IN) = 19.35V l\u00e0 kh\u00f4ng v\u1ea5n \u0111\u1ec1 g\u00ec.<\/span><\/p>\n

+ Pin 3 (ADET) = 3.5V\u00a0 l\u00e0 kh\u00f4ng v\u1ea5n \u0111\u1ec1 g\u00ec.<\/span><\/p>\n

+ Pin 14 (ACOK) = 3.05V l\u00e0 kh\u00f4ng v\u1ea5n \u0111\u1ec1 g\u00ec.<\/span><\/p>\n

+ Tr\u1edf kh\u00e1ng ch\u00e2n 27 v\u00e0 28 (Sense d\u00f2ng s\u1ea1c) b\u1eb1ng 20ohm theo m\u1ea1ch l\u00e0 kh\u00f4ng v\u1ea5n \u0111\u1ec1 g\u00ec.<\/span><\/p>\n

+ Tr\u1edf kh\u00e1ng ch\u00e2n 17 v\u00e0 18 (Sense d\u00f2ng s\u1ea1c pin) b\u1eb1ng 2.3 ohm theo m\u1ea1ch l\u00e0 kh\u00f4ng v\u1ea5n \u0111\u1ec1 g\u00ec.<\/span><\/p>\n

Nh\u01b0 v\u1eady, t\u1ea5t c\u1ea3 \u0111i\u1ec1u ki\u1ec7n ho\u1ea1t \u0111\u1ed9ng c\u1ee7a IC \u0111\u00e3 t\u1ed1t v\u00e0 n\u00f3 \u0111\u00e3 \u0111\u1ee7 \u0111i\u1ec1u ki\u1ec7n m\u1edf ngu\u1ed3n s\u1ea1c v\u00e0o m\u00e1y.<\/span><\/p>\n

6. Chuy\u00ean gia ti\u1ebfn h\u00e0nh \u0111o ti\u1ebfp th\u1ea5y tr\u1edf kh\u00e1ng khi \u0111o ch\u00e2n G v\u00e0 S c\u1ee7a PQ700 v\u00e0 PQ701 ch\u1ec9 c\u00f3 kho\u1ea3ng 180 Ohm. T\u1eeb \u0111\u00e2y, chuy\u00ean gia x\u00e1c \u0111\u1ecbnh ngay ra l\u1ed7i b\u1edfi b\u00ecnh th\u01b0\u1eddng theo m\u1ea1ch ph\u1ea3i c\u00f3 200K Ohm.<\/span><\/p>\n

\"S\u01a1
S\u01a1 \u0111\u1ed3 m\u1ea1ch m\u00e1y Dell 5548<\/span><\/figcaption><\/figure>\n

7. Ti\u1ebfp t\u1ee5c b\u1eaft b\u1ec7nh, chuy\u00ean gia nh\u1eadn \u0111\u1ecbnh m\u1ea1ch b\u1ecb d\u00f2 tr\u1edf kh\u00e1ng cao n\u00ean c\u1ea5p d\u00f2ng s\u1ebd kh\u00f3 th\u1ea5y n\u00f3ng. S\u1eed d\u1ee5ng ph\u01b0\u01a1ng \u00e1n lo\u1ea1i tr\u1eeb v\u00ec ch\u1ec9 c\u00f3 4 linh ki\u1ec7n li\u00ean quan \u0111\u1ebfn l\u1ed7i. Chuy\u00ean gia suy \u0111o\u00e1n nghi ng\u1edd nh\u1ea5t l\u00e0 2 con PQ700 v\u00e0 PQ701 n\u00ean nh\u1ea5c th\u1eed hai con n\u00e0y tr\u01b0\u1edbc.<\/span><\/p>\n

8. Chuy\u00ean gia ti\u1ebfn h\u00e0nh ki\u1ec3m tra 2 con PQ700 v\u00e0 PQ701:\u00a0<\/span><\/p>\n

+ Nh\u1ea5c con PQ700 ra th\u1ea5y \u0111\u00fang d\u00f2, \u0111o l\u1ea1i tr\u00ean MainBoard tr\u1edf kh\u00e1ng l\u00ean 200K Ohm.<\/span><\/p>\n

+ Thay con PQ700 b\u1eb1ng con fet thu\u1eadn kh\u00e1c.<\/span><\/p>\n

+ \u0110o ch\u00e2n G c\u1ee7a PQ700 v\u00e0 PQ701 th\u1ea5y c\u00f3 8.24V, \u0111o ngu\u1ed3n \u0111\u1ea7u v\u00e0o c\u00f3 19.5V.<\/span><\/p>\n

+ K\u00edch m\u00e1y l\u00ean b\u00ecnh th\u01b0\u1eddng.<\/span><\/p>\n

9. \u0110\u1ebfn \u0111\u00e2y, chuy\u00ean gia k\u1ebft lu\u1eadn l\u00e0 d\u00f2 ch\u00e2n G v\u00e0 S c\u1ee7a PQ700 g\u00e2y ra l\u1ed7i.<\/span><\/p>\n

L\u1eddi khuy\u00ean t\u1eeb chuy\u00ean gia<\/strong><\/span><\/h2>\n

B\u00e0i chia s\u1ebb c\u1ee7a chuy\u00ean gia mong mu\u1ed1n c\u00e1c b\u1ea1n h\u1ecdc vi\u00ean kh\u00f4ng ph\u1ea3i \u0111i thay th\u1eed IC s\u1ea1c, thay th\u1eed t\u1eebng linh ki\u1ec7n tr\u00ean Mainboard.<\/span><\/p>\n

\n

Tham kh\u1ea3o chi ti\u1ebft: <\/span>L\u1ed9 tr\u00ecnh \u0111\u00e0o t\u1ea1o kh\u00f3a h\u1ecdc S\u1eeda Laptop t\u1eeb C\u01a1 B\u1ea3n t\u1edbi Chuy\u00ean S\u00e2u<\/span><\/a><\/span><\/p>\n<\/blockquote>\n

Tr\u00ean \u0111\u00e2y l\u00e0 chia s\u1ebb c\u1ee7a HLV. Tr\u01b0\u01a1ng V\u0103n Sinh v\u1ec1 c\u00e1ch b\u1eaft b\u1ec7nh m\u00e1y Dell 5548 kh\u00f4ng k\u00edch \u0111\u01b0\u1ee3c ngu\u1ed3n. Hy v\u1ecdng nh\u1eefng ki\u1ebfn th\u1ee9c n\u00e0y c\u00f3 th\u1ec3 gi\u00fap \u00edch cho b\u1ea1n trong qu\u00e1 tr\u00ecnh h\u1ecdc t\u1eadp v\u00e0 l\u00e0m vi\u1ec7c. N\u1ebfu c\u00f3 b\u1ea5t c\u1ee9 th\u1eafc m\u1eafc n\u00e0o th\u00ec h\u00e3y \u0111\u1ec3 l\u1ea1i b\u00ecnh lu\u1eadn ngay d\u01b0\u1edbi b\u00e0i vi\u1ebft n\u00e0y ho\u1eb7c inbox tr\u1ef1c ti\u1ebfp cho HOCVIENiT.vn \u0111\u1ec3 \u0111\u01b0\u1ee3c gi\u1ea3i \u0111\u00e1p t\u1ed1t nh\u1ea5t. Ch\u00fac b\u1ea1n th\u00e0nh c\u00f4ng!<\/span><\/p>\n

M\u1ecdi chi ti\u1ebft xin vui l\u00f2ng li\u00ean h\u1ec7:
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Nh\u1eb1m h\u1ed7 tr\u1ee3 c\u00e1c b\u1ea1n k\u1ef9 thu\u1eadt vi\u00ean c\u00f3 th\u1ec3 nhanh ch\u00f3ng s\u1eeda ch\u1eefa ch\u00ednh x\u00e1c nh\u1eefng pan b\u1ec7nh ph\u1ed5 bi\u1ebfn tr\u00ean m\u00e1y t\u00ednh, HLV. Tr\u01b0\u01a1ng V\u0103n Sinh chia s\u1ebb t\u1edbi c\u00e1c b\u1ea1n c\u00e1ch b\u1eaft b\u1ec7nh m\u00e1y Dell 5548 kh\u00f4ng k\u00edch \u0111\u01b0\u1ee3c ngu\u1ed3n, kh\u00f4ng m\u1edf ngu\u1ed3n \u0111\u1ea7u v\u00e0o.<\/p>\n","protected":false},"author":95,"featured_media":27438,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[185,94,192],"tags":[770],"_links":{"self":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/posts\/27437"}],"collection":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/users\/95"}],"replies":[{"embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=27437"}],"version-history":[{"count":0,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/posts\/27437\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/media\/27438"}],"wp:attachment":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=27437"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=27437"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=27437"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}