System board also know as motherboard (laptop)

A system board also known as motherboard or mainboard is the main circtuit board in any laptop. Unlike desktop PC system boards, laptop system boards come in thousands of different shapes and sizes. Laptop motherboards are model-specific. In other words, you cannot remove motherboard from a Toshiba laptop and stick it into a Dell laptop. All parts inside a laptop are connected to the system board, either directly via a connector mounted on the system board or through a cable.

In a typical laptop the following ports and components are permanently attached to the system board and cannot be easily removed and replaced without soldering:
1. Hard drive (HDD) connector.
2. CD/DVD drive connector.
3. Memory (RAM) slots.
4. Battery connector.
5. Keyboard connector.
6. Audio (headphone and microphone) jacks.
7. Volume control wheel.
8. USB ports.
9. Eithernet (RJ45 aka network) port.
10. IEEE 1394 (Fire Wire) ports.
11. Video chip and some other components and ports.

System board, processor (CPU) and LCD screen are the most expensive parts in any laptop. In some cases, when one of these three parts fails, it’s cheaper to buy a brand new laptop than replace the failed part. But each case is different so do your research.

System board removal

The system board is mounted inside the laptop base assembly. In order to remove or replace the motherboard, you’ll have to disassemble the whole laptop.

SYSTEM BOARD FAILURE SYMPTOMS.

When a system board fails, you may experience the following most common problems with your laptop. 1. The laptop is completely dead. There are no LED light activity when you press on the power button or plug in a known good AC power adapter. 2. The laptop starts but the video output on the LCD screen or external monitor is garbled. Most likely this is related to the VGA chip failure. 3. The laptop turns on without video on the screen and the power LED starts flashing. 4. The laptop works fine with AC power adapter but will not charge a known good battery. If that’s the case, most likely there is something wrong with the battery charging circuit or DC power jack.

Laptop: circuit create 3v3 and 5v power supply before

Basic Electronics - Introduction to fix hardware

Many apprentices you want to "fix hardware devices" such as ATX power supplies, CRT monitors, LCD, printers, motherboards, laptop ... but do not know anything about electronics??? This explains from, because the hardware device ultimately it is just "electronic device" that want to edit, then we must start with "basic electronics". The articles listed below have been collecting parts from some other site I http://hocnghe.com.vn compilation for easier to understand. Hope it will help you step into a new career conditional access. Click on the links below to see each post. 1. 1 DC current . 2. electromagnetic field . 3. alternating current AC . 4. use VOM meter needle . 5. watches Use Digital numeric measure . 6. Resistance . 7. Capacitors . 8. coil . 9. diode . 10. Transistor . 11. Mosfet - field-effect transistors (Metal Oxide Semiconductor Field Effect Transistor) 12. Thyristor . 13th. Amplifier circuit . 14. audio amplifier circuit using BJT transistor . 15th. rectifier and voltage regulator circuit . 16th. oscillating circuit .

Turn on laptop batteries that die

Just share personal experiences ... 1weeks ago, I just bought a laptop acer 4630z physical condition so smooth ... only one drawback is the battery dead (no charge) ...
but has been in charge all day anyway and does not fill .. battery indicator is still dead.
Think like an order to buy a new battery.. but remember the old man had a weapon, who liked to sunbathe batterywhen the battery condition is weakening ... I finally drying the laptop battery under the hot sun all day (from 8 till 15 hours). ...
after work, I took the battery in the tile (guttering) .. I put on warm conditions directly to the laptop ... when the charge was a success .. .. want to fill. (charge indicator light yellow) .. but still wondering .. I fully cas (chargeindicator off) ... now has a full .. I try to turn it on ... OUTCOME batteries can be used again on my acer laptop to last for 2 hours 25 minutes tested ..... ...
Still wondering again ... I repeat the process again and again the charge fully turned on,,, hold on to positions two hours more ... maybe this share could be useful for all of us laptop owners that their money insufficient to buy baterai .. ..

Universal Inverter for Laptop

CRT MONITOR BLOCK DIAGRAM

MonitorCRT.jpg

Listing Code at Richtek IC

RT8202APQW  / DJ=CA
RT8223M / EQ=ED
RT8206A
RT8206B
RT8205A / CJ=DA
RT8209A / FH=BL
RT8167B
RT8205CGQW  / CL=CD
RT8202PQW
RT8205BGQW  / CK=CL
RT8011GQW
RT8010GQW
RT8204CGQW / H6=BE
RT8239CZQW / JD=CJ
RT9513GQW
RT8208AGQW / FF=BK
RT8208BGQW
RT8015AGQW / EL=CA
RT9364GQW
RT8205EGQW / DT=CB
RT8207AGQW / DH=CG
RT8209BGQW / AO=CB
RT8451GQW
RT8207L /EF=
RT8058  / CB=CC
RT9511
RT8204AGQW / JL=BK
RT8204BGWQ / FR=AH
RT8223B / DS=CA
RT9618
RT8015BGQW / GG= GG=CE
RT8223P / 20
RT8223L /EP=
RT8205L /EM=
RT8239C /JD=
RT8208B /FG=
RT8209BGQW / AO=CB AO=BK AO=BM AO=BD AO=BC AO=BL
RT8209E /A3=
RT9364A /FB=
RT8450G /EN=
RT8109G /ER=
RT8205D /CB=
RT8215GQW / FX=
RT8451GQW /F5=
RT8452GQW / F4=
RT8015DGQW /JO=
RT8251GQW /GE=
RT8502GQW /F3=
RT8204LGQW /J8=
RT9511GQW /CM=
RT8561A / CZ=

run command for windows

Commands:

1. Accessibility Controls - access.cpl
2. Accessibility Wizard - accwiz
3. Add Hardware Wizard - hdwwiz.cpl
4. Add/Remove Programs - appwiz.cpl
5. Administrative Tools - control admintools
6. Automatic Updates - wuaucpl.cpl
7. Bluetooth Transfer Wizard - fsquirt
8. Calculator - calc
9. Certificate Manager - certmgr.msc
10. Character Map - charmap
11. Check Disk Utility - chkdsk
12. Clipboard Viewer - clipbrd
13. Command Prompt - cmd
14. Component Services - dcomcnfg
15. Computer Management - compmgmt.msc
16. Control Panel - control
17. Date and Time Properties - timedate.cpl
18. DDE Shares - ddeshare
19. Device Manager - devmgmt.msc
20. Direct X Troubleshooter - dxdiag
21. Disk Cleanup Utility - cleanmgr
22. Disk Defragment - dfrg.msc
23. Disk Management - diskmgmt.msc
24. Disk Partition Manager - diskpart
25. Display Properties - control desktop
26. Display Properties - desk.cpl
27. Dr. Watson System Troubleshooting Utility - drwtsn32
28. Driver Verifier Utility - verifier
29. Event Viewer - eventvwr.msc
30. Files and Settings Transfer Tool - migwiz
31. File Signature Verification Tool - sigverif
32. Findfast - findfast.cpl
33. Firefox - firefox
34. Folders Properties - control folders
35. Fonts - control fonts
36. Fonts Folder - fonts
37. Free Cell Card Game - freecell
38. Game Controllers - joy.cpl
39. Group Policy Editor (for xp professional) - gpedit.msc
40. Hearts Card Game - mshearts
41. Help and Support - helpctr
42. HyperTerminal - hypertrm
43. Iexpress Wizard - iexpress
44. Indexing Service - ciadv.msc
45. Internet Connection Wizard - icwconn1
46. Internet Explorer - iexplore
47. Internet Properties - inetcpl.cpl
48. Keyboard Properties - control keyboard
49. Local Security Settings - secpol.msc
50. Local Users and Groups - lusrmgr.msc
51. Logs You Out Of Windows - logoff
52. Malicious Software Removal Tool - mrt
53. Microsoft Chat - winchat
54. Microsoft Movie Maker - moviemk
55. Microsoft Paint - mspaint
56. Microsoft Syncronization Tool - mobsync
57. Minesweeper Game - winmine
58. Mouse Properties - control mouse
59. Mouse Properties - main.cpl
60. Netmeeting - conf
61. Network Connections - control netconnections
62. Network Connections - ncpa.cpl
63. Network Setup Wizard - netsetup.cpl
64. Notepad - notepad
65. Object Packager - packager
66. ODBC Data Source Administrator - odbccp32.cpl
67. On Screen Keyboard - osk
68. Outlook Express - msimn
69. Paint - pbrush
70. Password Properties - password.cpl
71. Performance Monitor - perfmon.msc
72. Performance Monitor - perfmon
73. Phone and Modem Options - telephon.cpl
74. Phone Dialer - dialer
75. Pinball Game - pinball
76. Power Configuration - powercfg.cpl
77. Printers and Faxes - control printers
78. Printers Folder - printers
79. Regional Settings - intl.cpl
80. Registry Editor - regedit
81. Registry Editor - regedit32
82. Remote Access Phonebook - rasphone
83. Remote Desktop - mstsc
84. Removable Storage - ntmsmgr.msc
85. Removable Storage Operator Requests - ntmsoprq.msc
86. Resultant Set of Policy (for xp professional) - rsop.msc
87. Scanners and Cameras - sticpl.cpl
88. Scheduled Tasks - control schedtasks
89. Security Center - wscui.cpl
90. Services - services.msc
91. Shared Folders - fsmgmt.msc
92. Shuts Down Windows - shutdown
93. Sounds and Audio - mmsys.cpl
94. Spider Solitare Card Game - spider
95. SQL Client Configuration - cliconfg
96. System Configuration Editor - sysedit
97. System Configuration Utility - msconfig
98. System Information - msinfo32
99. System Properties - sysdm.cpl
100. Task Manager - taskmgr
101. TCP Tester - tcptest
102. Telnet Client - telnet
103. User Account Management - nusrmgr.cpl
104. Utility Manager - utilman
105. Windows Address Book - wab
106. Windows Address Book Import Utility - wabmig
107. Windows Explorer - explorer
108. Windows Firewall - firewall.cpl
109. Windows Magnifier - magnify
110. Windows Management Infrastructure - wmimgmt.msc
111. Windows Media Player - wmplayer
112. Windows Messenger - msmsgs
113. Windows System Security Tool - syskey
114. Windows Update Launches - wupdmgr
115. Windows Version - winver
116. Wordpad - write