Laptop Troubleshooting

 Laptop Troubleshooting for laptop keyboard repair, LCD repair, how to open laptop to fix spilled water on laptop HP Lenovo Dell Acer Pixelbook Asus and Apple.

Notebook repair blog - I created this website to share my laptop troubleshooting experience with others. This will guide you about laptop keyboard repair and laptop LCD repair , how to open notebook computer for troubleshooting and how to repair water spilled on laptop.

For laptop troubleshooting, there is different solution for different problem. So I have created individual post for each major problem. You can use this notebook repair stratagem for Lenova, HP Hewlett Packard, Dell, Google Pixelbook, Apple, Asus, Acer, MSI, Samsung and Microsoft laptop repairs.


Laptop keyboard repair :- 

There are many people looking for technical help about laptop keyboard repairing and how to replace notebook keyboard. How to fix laptop key problem as some keys are not working. Laptop keyboard is most roughly used component and I personally seen many laptop keyboard problem of HP, Dell, Microsoft, Google, Compaq Samsung. I created Laptop Keyboard Repair post to help you about this entire problem. You can repair laptop keyboard by yourself.

Laptop LCD repair: - 

Laptop LCD screen is the most delicate part, it folds and unfold many time. Also the LCD circuit that connect motherboard and laptop LCD screen is very movable. There are many problems like LCD display become dark, flickering of display or sometime you many need to replace laptop LCD. I explained everything in details about Laptop LCD Repair. It is not possible to explain about each type of laptop LCD fix like Toshiba, HP DELL Compaq etc. I explain LCD troubleshooting of one laptop. You can have idea about how to troubleshoot LCD problem. You can repair all laptops LCD using these methods.


How to open a notebook laptop: -

For laptop troubleshooting and notebook repairing, you may need to replace or repair many laptop parts. You may need to test different part for checking purpose. And for do it yourself notebook repair, you must know How to Open a Notebook and How to assemble notebook or disassemble laptop.

Laptop troubleshooting:-

There are many common laptop problem which you can troubleshoot at you own without any help from technical support. I covered few important issues and I am also planning to add few more laptop troubleshooting guide in future.


Laptop Troubleshooting


Spilled water on laptop: -

 Now a days laptop and mobile are very common. People use to work with laptop while watching TV or taking dinner or tea or water. It is the most common problem that by mistake you may spilled water on laptop keyboard or may spill water or tea on LCD of laptop. This water spilled on laptop may damage notebook. In this post I covered how to troubleshoot spilled water damage on laptop.

Laptop resources

Here is the collection of sites and blogs about laptop troubleshooting and notebook repairing. Purpose of this post is to provide valuable information about notebook reviews and cheap laptop guide to the visitors.

Coming soon update soon

Laptop Repairs for OVERHEATING Problems

How to troubleshoot Laptop OVERHEATING problem.

One most common problem is, laptop suddenly shuts down by itself without any warning. Sometimes it works fine for hours, sometimes it shuts down in 10-15 minutes.” This complaint hear over and over again. The major problem is OVERHEATING! Laptop.
This is one of the most common problems with laptops we deal with. You can repair overheating problem of Lenovo, HP Hewlett Packard, Dell, Google Pixelbook, Apple, Asus, Acer, MSI, Samsung and Microsoft notebook using below techniques.

 Indications of laptop overheating problem:


1. Laptop”s back side and keyboard are become very hot when the laptop is working.
2. The CPU fans become more noisy and working all the time at maximum rotation speed.

3. Laptop shuts down automatically without warning. Initially shut down after 1-2 hours and then every 5-10 minutes of operation.
4. Laptop is working fine in idle condition, but it shut down when you use high memory application like DVD player, image editing software.

Solution for Notebook overheating problem:

 
Note:-If your laptop is under warranty, then I advice to contact your local service center.
1)First you need to clean laptop with canned air, air compressor or vacuum to suck dust out. In majority of laptop you can access through the opening on the bottom or on the sides. But in some laptop like satellite A70/A75, you have to open laptop case to access heat sink.

Heat sink is used with fan to cool processor.


2) Check the Laptop CPU heat sink is properly attached with processor. I also recommend to apply new thermal grease (between processor and heatsink) for better heat conductivity.
1. If your CPU fan make unusual sound while it spins(grinding sound). It is advisable to replace Notebook CPU fan.
2. Clean the fan and the heatsink with compressed air.
3. Also check the RAM and if require then upgrade it. Your RAM size always more then optimum recommended by operating system.


How to repair laptop Heat sink problem.

 
You can fix HEAT SINK problem of HP Hewlett Packard, DELL, Lenovo, Acer, Google Chromebook, Apple, Asus, Samsung, LG, Microsoft and Huawei.


Toshiba Satellite A15 Clogged Heatsink.

Notebook Repairs for OVERHEATING Problem



Toshiba Satellite A35 Clogged Heatsink.


Repair Overheating problem Lenova HP Dell

Toshiba Satellite P15 Clogged Heatsink. Absolute champion.

Fix Laptop Automatically Shutdown problem


How to Clean a Laptop Screen

 How to clean Laptop Screen.

As most time people asking about how to clean a laptop screen. Everyone like to regain shine like new laptop screen. Screen is integral part of laptop. And you shall clean laptop screen regularly. Clean laptop screen make you comfortable to work. It reduce eye strain.

Steps for how to clean Notebook screen LCD.


Turn off your laptop and if possible also remove the battery. This is for safety issue. It is easier to find dust on LCD against the dark background.

1)Create solution for laptop screen cleaning.


Mix distilled water with isopropyl alcohol (rubbing alcohol) not more than 50% alcohol. Keep in mind isopropyl alcohol is TOXIC DO NOT DRINK. Commercial screen cleaner contain the same mixture. Even you can try CD/DVD cleaner. Before using any screen cleaner refer manufacturer’s manual for cleaning.


2. Use some spritzer bottle filled with diluted isopropyl. If you apply too much of the solution and it leaves notebook screen damp, simply wipe off the excessive solution from notebook screen.


3. Apply mixture to microfiber cloth or cotton cloth, such as an old T-shirt. Microfiber cloths can do better job as it can pick up dust and removing smudges. They will even remove oily fingerprints from a surface without spreading it around and without any additional cleaners.
Paper towel, Tissues or toilet paper will leave fine flakes of paper on laptop LCD or monitor avoid using them.
The most common type of screen cleaning is dust or stain on LCD screen. Moisten the cloth, Make sure the cloth is damp NOT wet as excess moisture. Apply light pressure to wipe laptop LCD screen for cleaning and do not apply excessive pressure on screen. It may result in scratches on the surface. It is good idea to move cloth in counter –clockwise against the screen.

Precaution taken during laptop screen cleaning.

Do not use ball-point-pen or screwdriver to rub the surface to remove stain.
Do not place mobile or rubber on laptop LCD.
Touching the screen with fingers will result in oily fingerprints.
Do not expose screen to sunlight for longer time.

How to Take Apart Notebook

How to take apart notebook of Lenovo, HP Hewlett Packard, Dell, Google Chromebook Pixel, Apple, Asus, Acer, MSI, Samsung and Microsoft.

 In the previous post we learn first 8 steps of How to Disassemble Laptop. On this web page i conjoin 8 more steps for how to take apart notebook. You can learn how to replace notebook system board, how to replace notebook LCD and heatsink.These are cardinal steps for notebook repair and troubleshooting. You can open notebook and replace notebook all hardware.

 

             How to Take Apart Notebook


STEP 9 How to replace notebook Display LCD.

This is prominent step to take apart notebook display assembly from motherboard.You can find one cable(most probably black colors) from LCD and it is connected to notebook system board. Disconnect the LCD cable from the system board. You can replace notebook LCD Display using this steps.
Remove the screw connecting the notebook LCD cable to the motherboard base.
Disconnect the flat LED board cable from the system motherboard.

How to disassemble notebook LCD

STEP 10 How to replace display Hinges.

Carefully lift the display/LCD assembly off the motherboard base.

The display/top cover assembly - LCD assembly and top cover assembly connected by hinges. Laptop display LCD hinges are dominant component for LCD working. This steps of how to take apart notebook direct you in proceeding of how to replace laptop LCD hinges. This step conclude how to replace notebook LCD display.


How to Replace Notebook HardDisk Holder


STEP 11 How to replace notebook hard-disk holder.

Remove the screws securing the notebook Hard Disk holder. Normally there are 4 screws for notebook Hard disk holder.
Remove the Hard disk holder. You have successfully replace hard disk holder. Notebook hard disk holder made up of plastic case.
Disconnect the left and right speaker cables from the system board.


How to disassemble notebook

STEP 12 How to Replace Notebook CPU Heatsink Assembly.

Remove five screws securing the heatsink assembly for CPU. And disconnect the fan cable from the main board. There is a fan on CPU for cooling purpose. When CPU fan giving noise or laptop CPU OVERHEAT. You can replace CPU fan and replace CPU Heatsink for notebook repair purpose. You can take apart notebook CPU and replace CPU fan.


How to Replace Notebook CPU Heatsink Assembly

STEP 13 How to replace CPU fan.

Carefully take out the heat sink off the CPU. Be sure to put heat sink thermal jel /glue when reconnecting the heat sink. It can affix CPU fan on processor. It negate CPU overheating problem. This is definite steps for laptop troubleshooting. You can use it for how to fix laptop OVERHEATING problem. You have take apart many notebook hardware. This step effectuate how to replace CPU Heatsink assembly.

How to Replace System board Motherboard.

STEP 14

How to replace notebook System Board / Motherboard.

You need to open notebook and remove many hardware component to open and replace notebook motherboard or system board.

Remove two screws normally at the corner side, connecting the system board to the base.


How to Separate Notebook all Hardware
STEP 15

Now lift of the system board starting from the left side, be careful with the PC card connector.

How to assemble laptop

STEP 16

Remove the system board off the base. You can take apart notebook of HP Hewlett Packard, DELL, Lenovo, Acer, Google Pixelbook go, Apple, Asus, Samsung, LG, Microsoft and Huawei. This Accomplish how to replace LCD hinges, how to replace CPU heatsink and CPU fan. It include how to replace notebook system board,harddisk holder etc. You can continue to How to Open Laptop for remaining steps.

Notebook Screen Troubleshooting

Notebook Laptop Screen Troubleshooting.


Notebook screen troubleshooting involve how to troubleshooting notebook video fail. It also guide about how to repair notebook LCD working when laptop start but it has red color tone. How to fix notebook screen flickers. Read Laptop LCD Repair web page before this laptop video fails in a little bit different way. In this case the back-light lamp hasn’t failed completely. Another LCD screen video problem is backlight lamp working, but in faulty way. This can fix screen problem of Lenovo, HP Hewlett Packard, Dell, Google Pixelbook, Apple, Asus, Acer Allview gamebook, gigabyte, LG, Nokia, Optima and MSI Micro Star International.

Notebook screen troubleshooting has following important hardware troubleshoting.

1. LCD circuit board,

2. LCD inverter board,

3. LCD backlight board.

4. LCD power circuit board. 

5. Tiny component like resistance, capacitor, semiconductor. 

Check all above hardware as per screen display LCD diagram and pinout. You can repair notebook screen become red or blue. It can troubleshoot lines on LCD screen display. Mostly you will see horizontal lines on screen. Sometimes there are vertical line of death on screen.

How to troubleshoot notebook LCD,Inverter Board and Back light.

This also provide steps to troubleshoot buzzing noise from backlight and inverter board of notebook. It can repair LCD inverter board. You need to check inverter board connection, input voltage to LCD inverter board, output voltage of inverter board. To troubleshoot notebook LCD inverter, follow circuit diagram and pinout of PCB Printed Circuit Board. Make sure all resistance, capacitor, triode, diode and circuit board are as per standard. You need to use color code to find value of resistance and other electronics component.

Notebook Repair Screen

How to troubleshoot laptop LCD working but red color tone.

 Laptop LCD is working initially when laptop start, but it has reddish tone and screen flickers. It makes buzzing noise from backlight and inverter board and after sometime backlight turns off automatically and no buzzling sound. Finally image on screen is visible but very very dark. You can fix laptop LCD display very dark image. You can use this steps to repair laptop LCD screen become red or blue.


Notebook Lcd Display Troubleshooting

In this screen problem, first check LCD with working backlight lamp. I am sure there must be problem with backlight lamp. Also check LCD driver board, inverter voltage and LCD backlight voltage.



How to Rectify Notebook Screen Problem

How to troubleshoot notebook screen display become blue.

Check following component of LCD and replace it if needed.

1) blue light filter or notebook screen, 

2) check display screen cable and refix display cable, 

3) clean connection point of display cable, 

4) remove and twist in notebook screen cable. You can repair notebook screen display become blue or red or troubleshoot line on laptop screen.

How to troubleshoot LCD Horizontal line moving problem and display screen flickers.

1) Check display LCD cable and find any cut or tear wire of display LCD. Make re-connection, join copper wire and bind with insulation tape.
2) Remove any exposed or cable.
3) Replace display screen cable.
4) troubleshoot LCD gate driver panel. You can troubleshoot TV display problem also. 
It can fix LED display screen lines of death. You can troubleshoot vertical line on screen.



Now also read spilled Water on laptop. This post explain how to open and replace notebook LCD and repair notebook LCD.

How to Decode Laptop Notebook Model Code Number

How to know notebook model code number and decode laptop model code.


When you contact customer care for hardware issue about your laptop. They ask about laptops model number. You need to decode model number of laptop. It is very efficacious for notebook repair and troubleshooting. when technical executive replace any hardware of laptop. It must congruous with laptop model number. There is maneuver to find laptop model serial number. Model number is in code like this

Laptop Model Code: A8Jn16DSM100Td.

Separate laptop code as this: A8-Jn-16-DSM-100-Td.
This notebook model code number indicate entire hardware specification of laptop. That helps during notebook repairs, when executive replace any laptop hardware. Here is the way to decode laptop model number.

How to decode laptop model serial Number with example.


'A' for Asus for sure, very smart.


Separate it to this: A8-Jn-16-DSM-100-Td. Process to decode laptop serial number is similar for all laptop varient.
Notebook model number code is made up of sub color. Each color indicate some special things relate to laptop.

1
) Red: Notebook series model.
2
) Orange: Graphic card model.
3) Green: CPU clock of laptop.
4
) Blue: Optical drive type.
5
) Purple: Harddisk capacity.
6
) Black: CPU type.

This are very useful for laptop hardware replacement. You can find exact model number of each hardware. For meticulous laptop troubleshooting, it is necessary to decode laptop model code number.


How to know Some notebook series models.


A8 = All-purpose laptop with 14" wide screen, 2.4 kg. weight. KG stand for Kilo Gram.
A9 = Large laptop 15" , 3.2 kg weight.
F2 = Large laptop่ 15" , 2.9 kg weight.
F3 = Large laptop 15" wide screen, 2.9 kg weight.
M9 = Small laptop 14" , 2 kg weight (light).
U5 = Small laptop 12" , 1.4 weight (very light). This is the best way to find notebook serial number.

How to decode Some graphic card models.


H, F, R is on-board unit for laptop graphic card.
Jn = Geforce 7300 (replacement of Jc).
Jm = Geforce 7600.
Js = Geforce 7700.
Je = Radeon X1450. Radeon mostly used graphics card of AMD. AMD full form is Advance Micro Devices.

Ja = Radeon X1600.
Jp = Radeon X1700.

How to find notebook CPU clocks frequency measure.


Processor CPU clock is 16. The number sixteen must be calculated before knowing real CPU clock. To calculate the clock, simply divide that number by 10 and the result is the minimum range of clock frequency, that is 1.6 GHz. For the maximum range, just put 9 at the end of the minimum range, and you'll get 1.69 as a result.
Total CPU clock available for this model is between 1.6 to 1.69 GHz. This procedure can calculate CPU clock speed. You can find CPU model number. It determine minimum range of CPU clock frequency and also calculate maximum range of CPU clock frequency.


How to know laptop Optical drive type.


DSM = DVD Super Multi.
CMC = Combo Drive.

How to find notebook Harddisk capacity.


The unit of harddisk capacity showed as GB (Gigabytes), so 100 means 100 GB.

How to find CPU Type of laptop.


C = Intel Celeron processor.
D = Core Duo CPU Processor.
TD = Core 2 Duo CPU PROCESSOR.


For the nearly coming CPU - Core 2 Quad, its code should be something like "TQ". You may made a guess for more future model codes or even those existing model codes in the market.
This paradigm for laptop code decode is for Asus laptop. The basics are same for all kind of laptop MODEL code decoding, may be few things very as per the laptop brand. Try this paradigm for decoding HP Hewlett Packard, DELL, Lenovo, Acer, Google Chromebook, Apple, Asus, Samsung, LG, Microsoft and huawei.