Showing posts with label laptop. Show all posts
Showing posts with label laptop. Show all posts

How to fix Lenovo L412 Black Sreen

To repair the Lenovo L412 laptop that black screen and not booting we need a heater blower or the hair dryer or some other similar tool that can resulting the hot air. Black screen of this condition is that the laptop working when the power button pressed indicated by the processor fan that working and the power indicator led lit up, but the screen of the laptop show nothing.
How to fix this problem? Follow the following instructions :
1. Turn off the laptop by press and hold the power button until the power led dead.
2. Release the battery and the charger.
3. Open the back casing, look at the image bellow
How to fix Lenovo L412 Black Sreen
4. Release the heatsink ( processor cooler fan ). You will see the chipset VGA of this laptop at behind of these heatsink.
How to fix Lenovo L412 Black Sreen

Now, after the heatsink released please to rehot or reflow these chipset VGA using the heater blower or the hairdryer. If you using the heater blower set the temperature for about 400oC and reflow for about 10 seconds.
This action will fix the Lenovo L412 that black screen and won't booting.

Get Into BIOS Lenovo L412

This is the steps you can follow about how to get into BIOS setup of the Lenovo L412 thinkpad laptop. Generally that we have knew the steps to get into the BIOS setup of the laptop is by press the F2 key, Delete or F10 key just after the laptop turned ON, but the steps of this laptop is not a like this.
Get Into BIOS Lenovo L412

The steps is :
1. Turn off the laptop, press and hold the power button if the laptop error.
2. After the laptop dead, press and hold the F1 key of the keyboard, press and hold.
Get Into BIOS Lenovo L412

3. Press the power button to turn ON the laptop, don't release the F1 key ( still press ).
4. Still press the F1 key until you can see the BIOS setup view on the screen of the laptop.
Now, you can get into the BIOS setup of the lenovo L412 thinkpad laptop and you can setting it as you want.

Why The Laptop Jammed

Why the laptop jammed at the initial appearance?, Lets discuss this based on the real experience. Some times ago, i have been repairing the HP laptop with the same problem with this. Finally i found that the problem is at the USB module, the right usb port module. There are a SMD capacitor that is short circuit it's legs, we can test this using the multi tester.
Why The Laptop Jammed
As image above, i have replaed these SMD capacitor with different size. Here is 100uF but i place the new one with the size 220 and this is working well without any other problems.
So, maybe there are any trouble that causing the laptop jammed but this is one of the causes of the laptop that jammed at the initial appearance.

The Laptop Death Caused By This IC

This is about how to fix the laptop death caused by a small IC. The death laptop caused by various issues and one of this is caused by the broken charger IC. The charger IC is an small controller IC at the motherboard of the laptop that is working as a controller of the charging process of the laptop.
But is this IC get the problem so the laptop will won't turned ON or the laptop is real death. As in my experience, about the Aspire 4741 laptop that not working well, won't turned ON, no charging indicator, and nothing indicator light ON and after i make analyze procedure so the result is that the charger IC have broken.
Replace the charger IC will fix the laptop death.

How to Fix Vertical lines of Laptop Screen

This is one of ways to fix vertical lines of laptop screen. Here i want to share a real experience that has to do with this issue. In this experience i have been repairing toshiba laptop that show vertical lines on the screen. This laptop working well if we get into save mode, let's see the steps that i have try .
1. Clearing the RAM pins. This step not success, the laptop still not well
2. Replacing the RAM, still not success
3. And finally, i add a SMD capacitor with size 330 at VCore lane. Place this paralel with Nec tocin behind the processor.
How Fix Vertical lines of Laptop Screen
After add this capacitor so the laptop working well without vertical lines on the screen. This mean that the problem of this laptop is the Voltage at the VCore lane is less refined caused by the Nec tocin that is not working normally and this capacitor make the voltage more good.
Please to watch the video below for more real action.
Also, if able you can replace the Nec Tocin at VCore lane with the new one to fix vertical lines of laptop screen.
Menemukan Komponen Rusak Pada Laptop Not Charging

Menemukan Komponen Rusak Pada Laptop Not Charging

Ada beberapa langkah yang harus dilakukan atau seharusnya dilakukan untuk menemukan komponen yang rusak yang terjadi pada laptop not charging yang manunjukkan adanya kegagalan proses charging atau pengecasan yang tidak sempurna.
Langkah-langkah ini bertujuan agar sumber masalah bisa ditemukan dengan tanpa ada resiko kerusakan pada bagian lain atau setidaknya mengurangi adanya resiko kerusakan yang semakin bertambah.
Kita tahu bahwa setiap langkah service pada laptop selalu diwarnai dengan resiko yang bisa saja menimbulkan kerusakan baru yang kadang-kadang bisa menambah masalah lagi dan memerlukan biaya yang lebih tinggi jika kita ceroboh dalam menanganinya, maka resiko tersebut harus kita minimalisir dan kalau bisa tidak ada resiko sehingga masalah teratasi tanpa menimbulkan masalah baru.
Maka dalam menangani laptop not charging ini kita perlu lakukan langkah check up sebagai berikut :
1. Check kondisi charger
2. Check kondisi baterai
3. Check kondisi konektor-konektor termasuk kabel yang terhubung langsung dengan unit charger
4. Check kondisi blok charger di bagian mainboard laptop, lakukan di langkah terakhir karena resikonya paling tinggi..
Sony Ultrabook Wont Turn ON

Sony Ultrabook Wont Turn ON

What we can to do when our Sony Ultrabook wont turn ON or charge and there is no light when the power is plugged in.
I will try to answer this question. Here is the steps to analyze and fix the problem.
1. Release the battery and after few seconds try to turn ON the laptop using the charger only
2. Try to use the other charger to ensure that the charger is normal
3.  Open the case and release the CMOS battery, inside of the laptop.
4. Find the schematics of the motherboard of the laptop and find the 19V rel and check this
5. Find the 3V and 5V rel and check the voltage here