2015年4月21日星期二

How to save cellphone from water damaged?



 
How to save cellphone from water damaged?

 

Nowadays, cellphone is one part of ourselves, how to protect our cellphone. When your smartphone is water damaged, what would you do?

Cellphone cannot start up, call with noise, display not normal, even it cannot repair well, since the Circuit Board corrode too much.

 

So, the first step is to take out the battery to avoid long time corrosion. (Should NOT start up the cellphone, otherwise, the inner circuit board will short circuit, even burn out.)

            
 

If it meets clear water, you can take it easy, maybe the water make some inner parts bad welding. There are two steps need to do now.

A. Clear the cellphone by Absolute alcohol ----alcohol volatile fast together with water on phone.

B. Dry the circuit board by Air Gun carefully, BUT NOT Hair dryer.

 

Air gun:                                                                             Hair Dryer

                   

Normally almost cellphone will work well after above solutions. If not, the inner parts may get rusty, have to double weld!

 

But if dirty/salty water gets in, please follow below steps.

Clear cellphone right away, dirty water will corrode circuit board, the worse the longer invasion. Use soft hair brush to clean dirty in the phone, ultrasonic cleaning apparatus is recommended under serious situation.

And then, dry by air gun, double weld the inner parts.

 

If cellphone still does not work, e.g. cannot start up, have to double check out, the circuit board broken or spare parts short circuit. During trouble shooting, usually it caused by Power supply IC issue. It will go well after change power supply IC. You need this Tin plate plant and Soldering paste.

 

 

PS: To avoid risks, the best way is to protect our cellphone with waterproof case.

  

 

2015年4月16日星期四

How to refurbish LCD assembly?

OCA glue or UV glue? Different operations

How to refurbish LCD assembly?
Firstly, take the broken glass from screen.
Secondly, remove the glue on lcd. (Use ethyl alcohol, banana oil or scraper knife to take it off.)
Thirdly, install new glass on LCD.

There are 2 options for your reference.
Option 1: OCA Glueone piece for one model)
Option 2: UV Glue (liquid)


Which option do you prefer?

A.    If use OCA GLUE, please follow up 2 steps
Step (1) paste the OCA glue on LCD screen;
Step (2) install glass on LCD screen.
Machines required: Film Laminating machine, vacuum pump, Pressure screen machine & Removing bubble machine, vacuum pump and removing bubble machine are one unit.
These machines are huge and expensive, but do a perfect job and could make a nice screen without any air bubble!
 Film laminating machine:


Vacuum pump:

Pressure screen machine & Removing bubble machine:

B.    If use UV GLUE to install.
UV light needed.
Drop some UV glue on the center of the lcd, then put the glass on LCD, put the LCD assembly into UV light (as below image), so that the UV glue make efforts.



2015年4月8日星期三

How to strengthen your cellphone singal?

                                   How to strengthen your cellphone singal?

What will u do if ur cellphone without singal?be crazy?I wonder many people have met such problem.
There are several reasons effect our cellphone singal,perhaps our cellphone itself problem,or some external factors.But how can we to strengthen the signal?Here share some tips to improve iPhone singal.:)
First step,
1.    In setup app,click “Carrier”option
Step 2,put off”automatic”function,in Carriers page



















Step 3,
·         It will show network carriers,consumer just need to choose corresponding carrier,like T-Mobile.