Maintenance and repair of all crashes lighting devices for laptops
Maintenance and repair of all crashes lighting devices for laptops
There is no doubt that the lighting that we see too many problems we see warning lights dim or non-existent where we see on the screen the data, but without lighting Here comes the role of the process responsible for the lighting elements
.
The first element and the cable connecting the screen shown between laptop motherboard and inverter screen laptop
And be in the form of damaged or cut off contact in his limbs either side of the hyphen damage to the screen or from the next of motherboard and can be re-welded if possible, or completely change
The second element to cause more problems lighting.
Inverter or inverter or the so-called inverter. (Neon Lighting Department)
Lighting department found the bottom of the laptop screen. They serve as neon necessary effort to light up the screen. And called by that name because his job lies in the conversion of the DC voltages, AC voltages to a voltage fed by neon bulbs in general.
This inverter feeds generally on DC effort and it is often 12 volts to 24 volts. It feeds on your laptop or Two efforts on three main effort will be from 12 to 19.5 volts
The effort needs with basic effort and another is either 5 volts or 3.3 volts to be working properly
It has clarified a number of forms you
It also forms
Common to him and figure this form and be found in many models of laptops
We find the Part Number printed its own it this way
A figure or its Model for a way that we can change the appropriate alternative
And too many breakdowns lighting circuit because it depends in its work on several key functions and sub basic function is neon lighting and also his job to control the level of lighting. Because he receives several orders arrive from the keyboard to input and output circuit in motherboard him directly and through this signal we can control the level of lighting.
And in charge of this process, the FN key
FN key multi-functional as the letters of the word originally FN Function means a function key
We find in laptops are changing the lighting or incompleteness increase the screen by pressing the FN key and it often is in the bottom left corner with another key at the same time and with every keystroke or constantly is increased or reduced lighting.
The keys will be an increase or decrease screen brightness with the FN key
The arrow keys are in the right of the keyboard
Or in the keyboard keys are highest
F1 – F2 – F3 ,,,,,
This is a summary of how to deal with this key in the most common devices
the toshiba Toshiba devices
FN with F6 to reduce the screen brightness
FN with F7 to increase the screen brightness
HTTP me HP devices
FN with F7 to reduce the screen brightness
FN F8 with the increase screen brightness
Left Acer devices
FN with the left arrow to reduce the screen brightness
FN with the right arrow to increase the screen brightness
Dail Dell devices
FN with the arrow bottom to reduce the screen brightness
FN with the upper arrow to increase the screen brightness
Alosus ASUS devices
FN with F5 to reduce the screen brightness
FN with F6 to increase the screen brightness
Go back to the failures and ways to fix it inverter
In order to learn maintenance inverter must understand the way it works
We talked about the output now I will explain to you and your income Pinverter
Here socket income consists of six parties also note
The first and second party IN are one party as shown when the arrow No. 1 and are responsible for the coming of Almadhirbord core voltages hyphen through small cable outside of the cable screen
Third party and as it is called the ON-party which the party responsible for the lighting process began
And referred to him by the arrow and is No. 2 job in the reception of a signal coming from a small Bvoltaip Almadhirbord in case of quitting.
When you receive this signal function inverter begin to turn next to Almadhirbord voltages of voltages you need neon lamp in the screen as we explained before
Fourth party as it is called by the the ADJ and referred to him by the arrow No. 3 which is the party responsible for Zbt lighting comes the function of this party after the third party and also receives a fixed signal at the beginning of takeoff and through given run the appropriate lighting during take-off device is also the party that receives the signal coming from The FN key upwards or decrease lighting
Fifth and sixth party, a party one as seen and referred to them by the arrow No. 4 They GND
Or as we call it Ground party
After we explained that your income Pinverter we begin with God’s help and how to explain Aattalh repaired.
inverter features a FUSE protection on his or her income, when an error resulting in a high voltage at the output or the occurrence touches a fuse parties Pinverter cause damage and be this way, as shown
.
To find out what that was is why is measured on the development of the BUZZER right to him and measurement to give whistle on this situation and has not given a whistle must be changed at fuse another the same size for the end of this holidays or Tsairh hair cord from the weak type noted that the fuse has no poles, you can link whatever at will, God willing.
In general this group is often the cause of most of the problems inverter damage and lead to mute Alpaor or voltage fluctuation causing malfunction of the functions that we talked about, especially in small transistors by the adapter is often the reason Tfahm touches one end of the screen Cable
.
And often it brings Dry or chapter in welding a particular part or piece of certain inverter after re-welding works as before and this image illustrated the most important elements that separation occurs as a result of high temperature inverter with the passage of time. As we note that he has been re-welding of the works of new
Here, too, the image shows another partial happens the same problem
Here we may be finished this partial but before we address the third element I want to explain to you the best and fastest way to test inverter by
Normal Power Supply
We explained to you by your income and Pinverter way we will explain to you how to properly test
We put you explain photographer for this test
What we will need him in this test
.
1-2 one party as we explained before they are directly connected to this party if fuse basic income As we mentioned that the basic income up to him voltage suitable starting from the 12-volt yellow wire
No. 2, a party the ON and No. 3 which party is the ADJ hitchhike Bvoltaip one Through these voltages shall now give is running for the highest lighting Anfirter him and we will connect these parties Bvoltaip suitable for them, a 5-volt, a red wire
What remains to us now Ground party and we will connect it to a party Ground black wire
As it described to you
We then connect the small neon after we adjusted in this way inverter
We then connect the cable as shown in the picture
In this way we connect inverter What remains for us but connect the power source
This image illustrates the score after the power source is connected this way make sure what was inverter works as natural or malfunctioning what
Alanasraii the monitor Neon (Bulb) CCFL LAMP
To make sure it’s causing malfunction should experience another screen or another Neon taken from a damaged screen, if any.
We Bazlh cable connecting to the monitor Neon
We installed a neon Recent experience
When the screen or neon lighting that we can ascertain the reason for not lighting is bulb and can be replaced from other Blmbh another screen condition to be of the same size