Eman's Repair Shop

03/05/2022

We accept repair flat screen tv.

11/01/2022

weighing scale shorted

06/01/2021

28/04/2020

How to Increase Battery Life of Smartphone

Here we Learn How to Increase Battery Life of Smartphone. Fast battery drain is a common problem with smartphones – both Android and iPhone even Samsung and other Mobile Phone Brands. So, how to increase battery life of smartphone? Let us learn the solution here.

Smartphone Fast Battery Drainage Problem
Today, smartphone have become a part of our life. Whether it is Android, iPhone or well known brands like Samsung, Apple iPhone, Huawei, Xiaomi, Oppo, LG, Motorola, Mobicel, Lenovo, Nokia or China Made Smartphone.

The craze for smartphones is increasing day by day but the main problem with most smartphones is battery life. People are bothered about fast battery drainage. So, it is extremely important to take note of some Tips and Practices that can increase and improve battery lifespan so that it last longer.

What most people simply do is plug in their smartphone for charging as soon as they reach their office or home. Then they leave their phone on charging for unlimited period of time. This is completely wrong and can damage the battery of your smartphone or decrease its life.

Let us now discuss some very useful and simple tips on How to Increase Battery Life of Smartphone.

How to Increase Battery Life of Smartphone
1. Do Not Allow your Smartphone to Overheat
Heat is the enemy of lithium-ion battery. Lithium-ion batteries are used in most modern smartphones. In order to prevent your Android smartphone or iPhone from getting overheated, you must follow some tips.
Never place your smartphone on dashboard of your car. Never charge your smartphone when playing graphically intensive games because it increases temperature of your smartphone and harms the battery. The ideal temperature to charge your smartphone battery is between 20 to 30 degree Celsius.

2. Do Not Use your Smartphone while Charging
Using your phone while charging is harmful to you and the battery of your smartphone. Even slightest use of the phone while charging stops complete charging cycle of the battery and can even damage the battery.

3. Never use Duplicate Charger
Always use original charger only. This practice becomes even more important if your phone supports quick charging. According to experts, high capacity chargers can charge up to 70% more quickly but it can also damage the battery if charging is not done properly by using duplicate chargers.

Good quality original chargers help to maintain life of the battery. So, never use any third party chargers or low cost inferior chargers.

4. When to Charge your Smartphone
When you buy a new smartphone, it is not necessary to charge it full before use. Most new smartphones come with fully charged battery. Just start using your smartphone. At the same time, it is not necessary to charge your smartphone 100%. It can be 85% or 90% or 95%.

Never allow the battery to drain to zero. Put your smartphone to charge when the battery level reaches 10%. This will help the battery to last long.

5. Never Leave your Smartphone on Charging Overnight
This mistake is done by most people around the world. This damages the battery and it will not last too long. When the voltage of the battery reaches its desired capacity, it automatically stops charging. It is batter to unplug the charger once the battery is fully charged.

6. Always use External SD Card for Storage
This will also help to improve and increase lifespan of the battery.

7. Do Not Download Unlimited and Useless Apps
Download and use only useful apps. Uninstall unwanted and unused apps. Also try to install apps on external SD Card to increase and improve battery life.

28/04/2020

How To Fix Water Damaged Mobile Phone – iPhone and Android

– Learn how to fix and save a wet mobile phone with water, rain or any other liquid like tea or coffee.

How to Fix Water Damaged Mobile Phone
Many times our mobile phone gets damaged if we accidentally dropped it in water. It can get wet with water, rain water, tea, coffee or any other liquid. After getting wet in water or any other liquid, most mobile phone gets dead and stops working. It won’t turn ON. Or even if it gets Switched ON for Few seconds or minutes, it will again Switch OFF on its own and won’t turn ON again.

Problems Caused by Water Damaged Mobile Phone
If you dropped your iPhone and Android Smartphone in water, then it can result in following problems:
=>It wont turn ON.
=>It may turn ON for few days, say month or so, but after few days it may start giving trouble.
=>Dropped phone in water may get switched ON but the screen won’t work.
=>Phone glitching after water damage

These are some reasons to worry if you don’t know how to repair and fix wet water damaged mobile cell phone. But repairing and fixing a wet mobile phone is very easy. Anyone can DIY do it without having to take the mobile phone to a service center.

Here I explain step-by-step process on how to fix water damaged mobile phone. The same steps apply for all brands of mobile phone including – Samsung, China Mobile Phones, Motorola, HTC, Sony, Alcatel, LG, Panasonic, Huawei, ZTE, Xiaomi, Oppo, Vivo, Spice, Lava, Sony Ericsson, Micromax, iPhone etc.

How To Fix Water Damaged Mobile Phone – Step-by-Step Guide
1. If you dropped you iPhone or Android Smartphone or Simple Feature Phone in Water, Tea, Coffee or any other Liquid and the Phone Switched OFF on its Own then NEVER Try to Switch it ON. Remember the Phone is WET and if it is Not Water Proof then there are 100% Chances that the PCB of the Mobile Phone or the Logic Board is WET. As soon as you Turn it ON, there will be Shorting in the Phone and this will lead to More Damage.

2. Switch OFF the mobile phone and Remove the back cover and the battery.

3. Using a precision screwdriver, disassemble the mobile phone. This is very easy. Just remove all the screws and keeps them in a safe place. Make sure to remember the order in which you disassemble the mobile phone. This will be useful when you assemble it back.

4. If there is water in the display then you will also have to disassemble and remove the display.

5. Using a hot air blower , carefully dry out the PCB of the Mobile Phone and all other wet parts. You can also keep the disassembled mobile phone in sunlight and let it dry naturally.

6. Using an ESD-Safe brush and IPA solution or spirit, clean the circuit carefully. This prevents corrosion and oxidation on the PCB.

7. Now assemble back the mobile phone carefully.

Now the mobile phone must work. If it doesn’t works, charge the battery and try again. If it still doesn’t works then you may have to take the handset to a service center.

28/04/2020

Mobile Phone Overheating and Battery Draining so Fast Solution

is Very Common Problem with Android Smartphone and iPhone. Here is How to Fix Solution to the Problem.

When Does Mobile Phone Overheat?
Little Heating is Normal with Feature Phone and Smartphone (Both Android and Apple iPhone). There is nothing serious to worry about. But Overheating of a Mobile Phone and Battery Draining Fast is a Serious Problem and needs immediate attention before the Phone Gets Dead.

A Phone may suffer overheating under following situations:
*Phone overheating while playing games
*Phone heating up while charging
*Sometimes phone overheats and wont turn on

Mobile Phone Overheating and Battery Draining Fast – Problem and Solution
If you charge your phone upto 90% or 100% and the Phone Gets Hot without you doing any heavy task then following could be the REAL Problem. These Solution Apply to any brand including Samsung, Nokia, LG, iPhone, Micromax, Motorola, Xiaomi (Mi), Oppo, Lenovo, ZTE, China Mobile Phones etc :

1.There is Half-Shorting in the PCB of the Phone. Half-Shorting means that some supporting Small Components, generally near the Battery Connector, has become faulty / short. These small electronic components are generally SMD Capacitor but it can also be a SMD Diode or SMD Resistor.
To fix the problem, you have to remove the faulty component. If it is a Capacitor then it is NOT Compulsory to Replace it with New One. But if it is a Resistor or a Diode, then it must be removed and replaced with a New Component.

2.If the Phone Overheats and wont Turn ON, then there is Full Shorting in the PCB of the Phone. Full Shorting means that some Major IC has become Faulty and needs repairing or replacement.
Read: How to Check Shorting in Mobile Phone with Multimeter

Phone Heating up While Charging
In such cases either the Battery (If Removable) is Lose or there is Faulty with the Battery Connector and needs to be replaced.

Phone Overheating while Playing Games
This generally Means that Hardware of your Phone is Not able to Handle the Load of the Game. The Processor and other Major ICs of your Phone is Not Suitable for the Game. You need a a Smartphone of Better Hardware Configuration and Probably Latest OS.

If Phone Just Heating and NOT Overheating and Battery Not Draining Fast

28/04/2020

How to Know if My Mobile Phone is Original or Fake

How do I Know if My Mobile Phone is Original or Fake – This is one of the most common question asked by people who want to Buy a New Phone Mainly used, refurbished or second hand phone. So, here we will discuss and understand how you can identify a Fake Clone Phone and avoid buying it.

Know Specs and Features
Before buying an Android Smartphone or Apple iPhone, you must always know its Specification and Features.

Do some Online or Offline Research before buying the doubtful phone. Visit the official website and checkout the phone’s specs and features of the particular model. Checkout the hardware and software configuration and available colours, warranty etc. All Top Mobile Phone Manufacturers in the World mention these details on their official website.

Remember that manufacturers of Cloned Counterfeit Fake Mobile Phones try to imitate the original and genuine phone as close as possible. They try to copy appearance, colour, logo, labels, packaging, accessories etc. But they can never match the Hardware and Software configuration of the Original Phone and this is where we have to focus to identify and spot a fake phone.

Check IMEI Number
IMEI stands for International Mobile Equipment Identity. This phone identification number is mentioned above or below the battery of the mobile phone. You can also Get IMEI Number of your Mobile Phone, Android Smartphone or Apple iPhone by Dialing * #06 #. IMEI number is always different in every mobile device.

Often fake counterfeit phone won’t have a Valid IMEI number or will use a fake number.

Once you have the 15-Digit IMEI Number, you can easily check its legitimacy and other information such as manufacturer and model type etc.

You can also Know Country of Origin of Mobile Phone from IMEI Number.

To Check Authenticity of the IMEI Number you can use tool like This or This

Once you find out whether the IMEI Number is Original or Fake, you can decide whether or not to buy the phone.

Check Brand Name and Logo
Most Fake and counterfeit mobile phone manufacturers avoid using the original Registered Trademark and Logo of Top Mobile Phone Brands in the World. Otherwise they will have to face legal cases. So, they use Names and Logos similar to the Original ones. Following are some examples:

Samsung = Sammsung or Samsang or Samsong
iPhone = iPone or iPhoon
Huawei – Hauwei or Huawai
Xiaomi = Xaiomi or Xioami
Similarly they will use spelling mistakes in case of other brands like Oppo, LG, Motorola, Mobicel, Lenovo, Nokia etc.
Appearance and Functionality
Fake phone may look and appear very identical to a genuine original phone. But if you look closely, you can identify the difference. There will always be some variation in material used, colour, location of keys and buttons, brand name, logo etc.

These fake phones are made of cheap material and components. Also they cannot afford to use the Original OS. They will always use pirated OS.

Availability of the Phone
Manufacturers of Counterfeit mobile phones often target brands and models that are popular and Out of Stock. People search for these Out of Stock Models because of their Popularity and this is where the Fake Phones comes in. These Fake Phones are generally sold on Online Auction Websites.

Often illegal people try to sell such fake phones by saying that they need urgent money or they have stolen it from somewhere. Beware of such frauds.

Spot Fake Battery and Charger
Carefully spot the Battery and Charger of the Phone. Counterfeits can never afford to use Original Battery and Charger at Low Cost.

Warranty
Always insist on 12 months warranty certificate in written. Never trust any oral agreement. Fake phones offer a shorter warranty period because they cannot guarantee it will last so long.

How to Avoid Fake Phone and Buy Original

28/04/2020

SMD Capacitor – Surface Mount Chip Capacitor Guide

SMD Capacitor – Surface Mount Chip Capacitor Guide. SMD Capacitor is made of an insulator between two conductors. There are several types of SMD capacitors. Learn More here.

What is SMD Capacitor and How is it Made?
SMD Capacitor or Surface Mount Chip Capacitor is an electronic component made up of an insulator between two conductors. This dielectric matter or insulator plays an important role of storing electric charge.
There are several types of SMD capacitors. They are divided according to the dielectric matters used in their composition. Air, paper, mica and electrolyte capacitors are mostly used.

What is the work of SMD Capacitor?
The main function of any SMD capacitor is to store the electrical energy and re-supply i.e. charge and discharge electrical energy.

How is SMD Capacitor Made?
SMD capacitor is made up of metallic plates (good conductor of electricity). Both plates are separated using a bad conductor or dielectric. The name of a capacitor is dependent on the dielectric matter used in the capacitor. If the electrolytic capacitor is yellow then its border are brown. If the capacitor is black then its border is silver.

What is the Function of a Capacitor?
The main function of a capacitor is to pass AC and stop DC.

What is the Unit of Capacitor?
The Unit of Capacitor is fared.

Ceramic SMD Capacitor
It is a type of capacitor in which ceramic is used as dielectric matter. These capacitors are rated according to the ceramic electrical properties. The electrical property of ceramic is multi dimensional.

Use of ceramic significantly reduces the size of SMD capacitor compared to other types of capacitors. Various ceramic dioxides are used in ceramic capacitors like barium titenate, barium strontium and titanium dioxide etc. Desired temperature coefficient is obtained by using various ceramic dielectric products. Di insulation is prepared by using multi layers of dielectric matters between two good conductors. This reduces the chance of its getting out or order. Its electrodes are generally plated with silver. This provides a high quality soldering property to the capacitor.

How to Check Electrolytic Capacitor?
If the value of the capacitor to be checked is 10 mF, then select 20 mF on the Multimeter. Connect the lead to the CX socket and place the probes on both sides of the soldering tips of the capacitor. If the display of the screen shows 10 then it means the capacitor is OK. If the screen shows 000 then it means the capacitor is open. If the screed displays 1 then the capacitor is short. The capacitor is considered OK if the value is within its tolerance level.

Please note that the above process is not applicable if the value of the capacitor to be checked is more than 20 mF. K**b of the selector switch should be selected according to the value of the capacitor.

How to Check Electrolytic Capacitor of Value higher than 20 mF?
Turn the selector know of the Multimeter on the symbol of Diode. Insert the probes turn by turn on Com and V / W / F Pins and keep checking the capacitor. If the reading increases and settles at 1 then it means the capacitor is OK. If the reading in both the cases remains 1 or the reading stops while ascending, it means the capacitor is out of order.

How to Check Simple Capacitor Using Multimeter?
If the reading on the Multimeter shows 000 after testing accompanied with a beep sound, it means the capacitor is short. If the reading shows 1, it means the capacitor might be open or even OK.

28/04/2020

Types of Diode in Mobile Phone and Their Function

Types of Diode in Mobile Phone and Their Function – Learn about different types of diodes used in a mobile phone and what are their function.

What is a Diode?
A solid state device with two electrodes which passes only the electric current of a particular polarity from one side in called diode. Solid state diode is generally made of germanium or silicon semiconductor. This is used for rectification and switching.

Several types of diodes are used in electronic instruments and gadgets. Chip diodes are used in mobile cell phones and other telecommunication devices. These are surface mount devices (SMD). Surface mount devices are soldered with special soldering technique called SMT.

Important Facts about Diodes
1.Indicating Character of Diode: D or V
2.Function: Making AC to DC (Converting) and Do the Switching.

P-N Junction Diode
Components made with the combination of P-Type and N-Type semiconductors are called diode. They are also called P-N Junction Diode.
P-type part of the diode is called anode and N-type is called cathode. The point where both these sides combine is called depletion layer because in this section, the electrons and holes remain neutral and do not attract each other. Due to this depletion layer, the electrons from either side cannot unite.

How Does Diode Work?
The required voltage to activate a diode is called diode biasing. Biasing is of two types –
1.Forward Biasing; and
2.Reverse Biasing

Forward Biasing
When positive supply is given on the anode and negative supply is given to the cathode, it is called forward biasing. This creates HOLE in anode (P-area) of diode and pressure is created on cathode (N-area) because equal charges repel each other. As the pressure continues to increase, resistance of the depletion layer (Junction) decreases to zero and the current flow starts.

Reverse Biasing
Supply of negative to anode (P) terminal and positive to cathode (N) terminal is called reverse biasing. As a result, the HOLES of anode of the diode attract the electrons of battery and the positive terminal of the battery attracts the electrons of the cathode and the resistance of depletion layer goes on increasing and stops the flow of current.

What is Rectification?
Mostly AC is used for electrical energy but in some cases DC has to be used. The process of conversion of AC to DC is called rectification.

Types of Diode in Mobile Phone and their Function
1. Signal Diode
This type of diode is used for detecting signals. These diodes are made of glass. A red ring on the terminal marks its cathode. These diodes are available in following numbers – IN4 148, IN34, OA79 etc. SMD signal diode is also available in black color.

2. Zener Diode
Zener Diode
Zener Diode

This is a special type of diode made with silicon which is used to keep the output supply stable. Zener diodes are used to stabilize voltage. It is represented by “Z”.

Zener diode is recognized by its “Zener Volt” like 3.0VZ, 3.9VZ, 5.1VZ, 6.2VZ etc.

3. Varacter Diode
This is a variable capacitance diode which functions on the principle of variable capacitor. These diodes function within a defined range of capacity. Varacter diodes are available in the values ranging from 1 to 500 pf and 10 to 100 V. These are used in the signal transmission circuits.

4. Tunnel Diode
These diodes are used for processing the properties of negative resistance and are used for switching at microwave frequency level.

LED or Light Emitting Diode

18/02/2020

Samsung S7562 charging+usb jumper done.

05/02/2020

BUYING DEFECTIVE CELLPHONES (5S,6,6S,6S+,6+,7,7+,8,8+,X) PRICE DEPENDS ON THE ISSUE OF YOUR UNIT!