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subject: TOP 10 - Dec Defects and Solutions for Notebooks and Netbooks [print this page]

TOP 10 - Dec Defects and Solutions for Notebooks and Netbooks

1. Notebook hangs over boots or resets after some time of use

Seen causes and solutions already tested:

A) Check the specifications of voltage and current power supply are in

according to the needs of your notebook, if not provide a source

compatible

B) Remove the battery and test again, faulty battery cause this symptom

C) Use programs Virus checkers and cleaners registration system and analyze the

Notebook

D) Use diagnostic programs to check possible errors in memory and other peripherals

E) faulty RAM and Hard Disk with Bad Blocks or very fragmented can cause

This symptom, if you can test and make another RAM function tests

HD

F) Check the notebook from overheating and the cooling fan inside

are calling after a while of use the thermal paste on the processor can be

worn and the ventilation system can be disrupted by internal dust in these

cases, the notebook will be disassembled and cleaning procedures and internal

exchange ofthermal grease should be executed.

2. Notebook not boot and hangs on the screen before loading the System

Seen causes and solutions already tested:

A) Try to recover the Operating System, corrupted files can cause this

Sinoma

B) Change the boot sequence and press the System Setup (Linux or Windows) for a

CD Boot

C) Make test operation or replace the HD, the same defects that cause Sinoma

D) Check the specifications for voltage and current power supply are in

according to the needs of your notebook, if not provide a source

compatible

E) Remove the battery and test again, faulty battery cause this symptom

F) Use programs Virus checkers and cleaners registration system and analyze the

Notebook

G) Use diagnostic programs to check possible errors in memory and other peripherals

H) faulty RAM and Hard Disk with Bad Blocks or very fragmented can cause

this symptom, it can test and make another RAM function tests

HD

3. Notebook LED panel lights no longer appears on screen Video

Seen causes and solutions already tested:

A) Check the specifications for voltage and current power supply are in

according to the needs of your notebook, if not provide a source

compatible

B) Remove the battery and test again, faulty battery cause this symptom

C) Make sure the HD Led flashes indicating that the OS is being loaded

If you examine the solutions for defects of numbers 7:08

D) Defects in RAM, Processor, HD, and other peripherals can cause this

symptom, test them on another Notebook or remove them one by one and then

testing to see if Peripheral has a short that may be causing this symptom (NOTE:

Before Peripherals removing one by one dsligue the Notebook)

E) This symptom can be caused by a general failure in the notebook CPU

Motherboard, this failure can be derived from the IC BGA Solder Cold Video

Controller's MotherboardNotebook, in which case the Board shall be recovered in

the Laboratory of Maintenance by Specializes in Infrared Training Station, Hot Air or

other specific rework of BGA Solder

4. Notebook will not turn on and not turn anything when you press the power button

Seen causes and solutions already tested:

A) Check the label to identify the power supply if the specifications

voltage and current are consistent with the needs of notebook (The label

underneath Notebook also has this information), if not provide a source

compatible

B) Remove the battery and test again, faulty battery cause this symptom

C) Make sure the connector input voltage VCC Notebook is right, he usually

break internally and cause this symptom, in this case the notebook will be

disassembled Laboratory Maintenance and your Motherboard should be repaired

with exchange for this Connector

D) Defects in RAM, Processor, HD, and other peripherals can cause this

symptom, test them on another Notebook or remove them one by one and then

testing to see if Peripheral has some short that might be causing this symptom

(NOTE: Before Peripherals removing one by one dsligue the Notebook)

E) This symptom can be caused by a general failure in the notebook Motherboard

CPU, it failscan be derived from the IC BGA Solder Cold Video Controller's

Motherboard Notebook, in which case the Board shall be recovered in the

Laboratory of Maintenance by Specializes in Infrared Training Station, Hot Air or

other specific rework of BGA Solder

5. Laptop not charging the battery

Seen causes and solutions already tested:

A) The battery may be damaged and should be recovered or replaced

B) Defects in the Battery Charging Circuit Card CPU can be damaged,

Plate must be disassembled and repaired in lab maintenance

6. Notebook reports that the battery is charged 100% more for about 20%

Seen causes and solutions already tested:

A) Battery may be under Memory Effect, it reports a false charge and Battery

cause shutdowns estantneos Notebook, Battery should be recovered Effect

memory or replaced

7. Notebook league boots, plus the image on the LCD screen appears weak and / or

dark

Seen causes and solutions already tested:

A) Connect an external monitor on the VGA output of your notebook, if the picture is

good indication that theLamp CCFL Back Light from the LCD is off

B) Use a tester LCD lamp and check if it is burnt, if

replace the lamp or the entire LCD

C) If the lamp lights use an LCD Inverter Tester and verify that it is generating

High voltage to light the lamp, if not test with another test or LCD Inverter

Flat Cable from the video signals, defects in the same cause this symptom

8. Notebook League Initializes plus the LCD screen appears with blank screen or image defects

Seen causes and solutions already tested:

A) Connect an external monitor on the VGA output of your notebook, if the picture is

good indication that the defect may be on board Electronic Screen LCD Flat cable

or video signals, test with another screen LCD or other Flat cable

E) This symptom can be caused by a failure from the Cold Solder BGA IC Controller

Video Card Mother's Notebook, in which case the Board shall be recovered in

Laboratory Maintenance of Professional Specializing in Infrared Station, Air

Hot or another specifically for rework on solder BGA

9. Notebook does not accept and / or failed some keys randomly

Seen causes and solutions already tested:

A) The network of contacts Keyboard can be oxidized and cause this symptom, the

Keyboard should be dismantled for repair or replacement

10. Notebook gives error reading or writing in some medias CD / DVD

Seen causes and solutions already tested:

A) dirt on the lens of the optical drive might be causing this symptom, the tray open and

wipe the lens with dry cotton

B) The optical drive unit may be misaligned or misplaced the power of the laser, the

it should be replaced or disassembled for recovery

TOP 10 - Dec Defects and Solutions for Notebooks and Netbooks

By: Marcos Santos

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