Analog Hot Air Station 2020

In this blog post, I am about to explain What are some common uses of a rework station in mobile

phone repairing? to do that let us start form analog rework station overview

Analog Hot Air Station for Mobile Phone Repairing

Now in analog hot air station, there are two knob Air and heater.

temperature and air knob

Heater element exists in Handle that is directly controlled by this knob. If you'd turn it on the button, this red light gets on also, you turn this button as per need.

station power button

when this light blinks.

This light blinks

It means you Heater element Get warm. Besides,

this handle has a heater inside

there is a Heater inside the Handle and it gets it red when the heat gun is continuously on Means is now is too much hot.

Besides a heat gun, you’ll need a few more mobile hardware repairing tools like soldering flux, heat resistant tape, biological knife, screwdriver, Tweezer, BGA reballing paste, and BGA stencils.

If you already have digital rework station and dont know how to do soldering work on smartphone circuits and technical details read this blog post

Some Common Uses of Analog Hot Air Station in Cell Phone Repair

Now how to resolder the components

to work on small components. moved up the knob of heater option to number two.

set on 200

You can also move it to three if you need. one thing very important that the numbers you'll see around the knobs are actually 100, 200, and 300 so you should very careful via using this. If you move the knob to Number two it means 200 and a midpoint is 250. for big components, You turn it on to three and keep air mini. what is mini?

set on 250

mini means that you keep air position on the analog hot air station between two and three.

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hot air gun mobile repairing

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Now Doing Soldering Practical on Mobile Phone Circuit

p sign is the component

Apply solder flux on the components to be unsoldered.

Use of Soldering Flux

this is flux

soldering flux is a liquid paste which is applied at the edges of all IC integrated circuits before resoldering or moving. smd hot air rework station heating and hot air help melt solder paste into the IC beneath.

Solder Flux Demonstration

Then you close it to your component for heating as well as touch the device to absolves the components works or not and keep giving heat.

Heating Component Demonstration

when it gets too much hot Then leave it from the tweezer slowly.

tweezer demonstration

As you can see in the image hold the component from the tweezer and move it very slowly by using
finger while giving heat by smd hot air gun continuously the component will separate when silver shine comes as you see in the image.

it gets separate

The same process you can do for adjustment

resoldering demonstration

put the component on the place and give heat gives silver shine.

resolder component

in this image, there are too many components but don't use the heat gun in complicated areas As you can see, these parts that are fixed on the side can easily move or separate by the Heat gun

complicated area is highlighted red in color

but using a heat gun in a complicated area are not allowed.

Now Doing Soldering Practical on All Mobile Phone IC circuits

to solder IC You keep your heat gun heater knob on and keep Air Normal in this picture these ICs

IC is highlighted in red

can easily be removed so set your heat gun on 350 and keep Air Normal If you have too much

heat can set on 350

wait for heating that as per need heat can be little increased

Heat Resistant Tape

High-Temperature Adhesive Tape

heat resistant tape is easily available in markets. this tape absolves heat.

apply tape like this

Means if you apply on a specific component, those components do not get hot.

Now Doing Soldering Practical on Microchips

Usually, nowadays microchips are not used in a smartphone.

this is microchip

In the picture, you'll see it. It can be called the microchips. to remove microchips.

Drag soldering

Your heater should be on 4.5 and air would be in normal like med. Remember that you will have to revolve your heat gun while working.

demonstration of revolving

revolving means do not use a heat gun in one position at a time. It must be move or evolve.

Now Doing Soldering Practical on BGA IC Integrated Circuits

Rework Station also called BGA Rework Station. Rework Station also called BGA Rework Station.
To work on balls grid array IC you have to use some additional mobile repair tools and components
to give heat from the bottom on the IC.

BGA ICs means dose ICs that are punched by machines on a circuit and fixed the corners

pasted IC image

with any kind of glue. To remove this IC. Take a knife that is used in a biological laboratory and feed it

until unless it gets red from the front. remember one thing that paste must use in fixing chips, so take the
hated knife and place it slowly, slowly

as you'll see in the video in this process hated a knife easily move into the chip. This BGA chip, similarly
remove as previous you're a

for unsolder BGA IC

hater should be on 4.5 and air would be a normal like med use paste and remove the chip but if you place
this BGA chip to another circuit, then you will have to make balls.

the Balls have gone

Ball making work is very expensive and demandable.

reballing tools

in the image, This is called BGA Kit.

Universal BGA Reballing Stencil

the black paper you'll see is that different Stencil. now Put down the IC under that stencil,

use screwdriver

then you will do it. It becomes balls for pasting the IC.

BGA Reballing Paste with Scraper

This liquid is the best.

tool to fill the holes

This paste works perfectly and this is strong also as you are watching the process

heating BGA with rework station

to remove the IC is the same as you have already seen, but this is very fragile so the heat it lightly

use low air pressure

in this process Keep the air in mad then move it on 3 while working and heat must be in between
3 to 4 when

IC Balls ready

You'll see the little bubbles while heating apply this paste

Professional Soldering Paste

it means the IC is resoldering Now Stop the heat gun and wait for IC to get Cool.

hold with tweezer

BGA IC balls magnifying glass view  

To know the reasons for ICs getting dry soldered read this blog post

Now Doing Soldering Practical on Filter IC

also called VCO IC

These filter ICs. to remove These move heater point on 4.5 and if needed, move to 5 and air always normal.

for removing filter ic 

When IC is removed it looks like this as an image

when remove

As you can see these walls are clean by using the soldering iron.

solder wire to clean

Then it places under that kind of net.

apply the heat by hot air station

As these silver prints can be seen then pays the pump bob that is available in the market hold
the circuit by using a screwdriver and then apply the heat by the heat gun.

if you want to know more about soldering iron, solder station and new mobile repairing tools special price
like desoldering tweezers How to Use Them read this article on Micro Soldering Repair Training