Laptop Repair Training College
Join over 1 million people who learn online, with these complete hands on practical Laptop training courses.
 Discover
 Diagnose Component Level
 Repair Laptop Motherboards
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- When a Motherboard Fails
- Capacitors - Mysterious Creatures
- When Capacitors Spring Leaks
- How To Recognize Flawed Capacitors
- How To Buy Substitute Low-ESR Capacitors
- Let's Get Started!
- De-Soldering Capacitors
- No Pain, No Gain...?
- Equip Your Motherboard With New Capacitors
- For Detail Order Course Now
See Samples Below
Q: Would love to know how you diagnose motherboards on a component level. What tools do you use?
A: I find it is very hard to explain this. actually, it is very
simple and can be described in two words: current and singal. read the
current change during booting tells you where the machine stopped. check
the singals on the different part of motherboard tells what is wrong or
what may missing.
Tools are: smd rework station, bga rework station, power supply
has current meter. all the rest tools you can find in any radio tv
repair shop.of course all the datasheets for the components, especially
the schematic diagram, you will find it much difficult without it.
Q:What are common faults on mainboards?
Do certain components fail? Is there a trend as to which parts fail quite often?
A: Different maker/model has different common fault. Toshiba S1
is vga chip, and can't be repaired(well, almost can't be repaired
because the pcb quality is not very good so successful rate is very
low).
HP DV2000, 6000, 9000, compaq v3000, v6000, dell 1210, all those use
nvidia chips have problem on vga chip or north bridge. easy to repair
but have to make fan keep spinning after repaired, otherwise will break
down in 1 or 2 week again.
hp nx5000, cpu pwm chip dry joint. acer 290, cpu pwm dry joint.
hp dv1000, compaq m2000 protection circuit easy to blow up.
ibm t40 vga dry joint problem.
These are just few of them. every machine has its own common fault. but dry joint is the common problem for all machines.
Motherboard repair is not as difficult as people thought, i think much easer than repair a tv.
Q:Dell 1525 Inspiron that says system does not recognize the installed battery this system will not charge the battery.
A:Charging battery in Dell laptop involves two major chips: EC(or
someone call it super IO), PWM chip for battery charging. BIOS has no
part of charging. Battery communicate with EC through SMB(system
management bus??) and EC controls charging PWM. Fix charging problem is
very hard in laptop repair, you must fully understand schematics, where
all the signals come from and where to go.
Today's laptops are less and less with programmed EC, Dell 1525 has no programmed EC so it can be replaced with same model.
Q: How i fix a DV6 with power problem.
The problem of machine is it cannot power up at all.
Doing routine check:
1. system power: 3V, 5V all presented - ok
2. NBSWON signal: 3.3V presented - ok
3. press power button, NBSWON pull down to 0V, ok
4. check DNBSWON while press power button, no response. - problem.
in here I made a mistake, I didn't pay attention of the voltage of
DNBSWON, this mistake waste me the next few days time. It should be
3.3V, but only about 1V.
Change EC as usual, because I thought the EC has problem. Then the big
trouble comes - it auto power up once I plug in the power but stop in
0.04A current. Check and find no S5_ON signal, which indicate south
bridge has problem, so change south bridge. But still same problem and
still no S5_ON. I find that the EC I change is kb3926A rather than
kb3926C. In most case, this is no problem but in very rare occation...
So I find a 3926C and put on. Now the motherboard is back to the same
problem while I first start to check! So I change a wrong EC and this
time I change a correct one, and also EC has no problem!
Because EC will start to read bios once the power plug in(not as people
think, once you press power button). I check BIOS chip, BIOS_CS should
have a countinue wave form but it just one stright line. BIOS chip is
faulty, I replace the BIOS chip and it works perfect.
Get 1000+ Laptop Motherboard Schematics Diagram Free With Purchase Of Full Course
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If you want to start repairing laptops for profit, or even just learning to repair your own, you have come to the right site.
This is the latest version of the course, which was released on the 1st of March 2012.
We take you step by step through repairing laptops. You will find just
about everything you need to know about stripping them down, diagnosing
faults, Troubleshooting Laptop problems, upgrading, installing software,
removing viruses etc.
This is a fully comprehensive instructional course in getting into the business of repairing all makes of laptops.
As well as all that, we also have our support team to answer any
questions you may have in a full range of subjects. The Course is full
of resources for buyers of any of the courses.
The students has access to a huge range of tools, software including
business and web design software. We also have links to laptop and PC
suppliers, parts and accessories in the UK and USA
Advance Chip-Level Module
Chip-level Training will be customized for your present knowledge
of electronics. If you go through the fundamental track , all the power
electronic components will be introduced before we move to the logics
section. After you become comfortable with power electronics the logic
session follows . It is an intensive coverage into the intricate details
of chip-level service of the laptops. This involves detailed circuit
tracing , signal analysis , replacement of SMD devices and all the tips
and tricks our service engineers acquired from the years of experiences.
the session makes you confident enough to chip-level service the new
generation notebooks from Lenova , Compaq, HP , Toshiba ,Sony and the
like .
Service Technicians entering into the Laptop training course must have experience in the following disciplines
- must be comfortable in using desktop systems and peripherals
- must have an above average knowledge about all the internal components and operation of the system
- comfortable with installing and managing various operating systems.
- managing the hard disk subsystem with formatting and partioning.
- installation and configuration of computer components like add-on devices
Ready To Learn A New Skill Online?
Convenience :
Complete
all courses via the Internet. Also a copy of the course will be sent to
you via email attachment. Download, print and study at your own pace
Flexibility :Attend classes at anytime and from anywhere in the world
American Trained Expert :Our
American Trained Laptop Specialist will help you with any questions,
provide you additional resources, and keep you up-to-date with rapidly
changed Laptop technologies.
Affordable :We provide high quality courses with much lower tuition than other training organizations.
Certificate :A Certificate of Completion will be issued at the end of course duration
Certificate
How to Receive The eCourse
Option #1 - Take the Course Online Anywhere, Anytime
Option #2 - Courses Now Available For Download
PLEASE NOTE: This is not an automatic download
A download link will be sent to you after payment confirmation from paypal
Course Contents
Motherboard Overview: Main Signals of Motherboard And How motherboards Work with Different ic
- Define different Laptop problems
- Common Laptop Notebook Chip
- POWER SUPPLY CHIP
- IO CHIP
- CPU power supply chips
- Charge discharge control chip
- CPU temperature control chip
- Graphics Brand
- Ethernet chips
- Sound audio Chip
- PC Card Chip
- COM port chip
- Keyboard-chip
- Keyboard chip
- Battery IC :
- Memory control chip
- Clock IC :
- lcd back light control
- Ddr memory power supply
- Other Common chipset
- Mosfets Used
- Crystal (14.318 Clock )
- Connector Socket(display, battery, dvdrom, modem, keypad, touchpad, onoff panel etc)
- Fault finding and troubleshooting of motherboards
- Tracing different connectors and socket with related component and chip
- Testing and using of different components
- Dc to dc power regulator sections
- Power supply to different chips vcc core, 5vsus, +1.5v, 1.8vsus, 5v, 10v, 2.5v
- Cpu core voltage, vid signals, vrm section, mosfet of vrm
- Clock generation circuits
- Bois chips section, rtc chip
- Power good , reset,frame, clock, bios signals
- Fault finding and troubleshooting.
- How to read different component datasheet.
- Basic cleaning and washing method of motherborad
- Smd component pratice removal and inserting different components
- Training using cro osciloscope
- Finding fault using cro osciloscope
- Use of debug card post error code
- Finding fault using post debug card
- Training using eeprom programmer
- Bios update using eeprom programmer
- Training using bga soldering station
- Removing bga chips and rebolling it using reball stencil
- Ics rebolling, bga ball arrangement, pratice
- Training using solder batch
- Removing socket & connectors using solder bath
- Bios password, ibm, dell password removing steps
- Searching data sheets of different ics
- Common problems of different motherboards
- Equipment/Tools used for Laptop Repairs
- Motherboard Voltage Regulator Circuit
- hdd repair
- How an image appears on the Lcd screen
- How I installed external Bluetooth adapter inside a laptop
- How To Bypass Windows 7 Logon Password In 3 Steps
- How To Fix Failed Nvidia Chip
- How to fix hardware problems without taking apart the Laptop
- How to replace battery cells inside laptop battery
- How to test a laptop or a desktop computer memory
- Steps to Hacking Dell D600 Bios Password
- Top 10 Things to Consider When Selecting a Digitizer x Oscilloscope
Full Course Contents
Login from any PC - anywhere in the world that has Internet access (home or office or both)
View Laptop Motherboard Exploded Diagram
Laptop Motherboard Ic chip Removal Process
How to replace tiny ic chips in a Laptop motherboard.
Look at
Burnt ic chip on the motherboard.
The laptop would not
turn on.
Closer view of the burnt ic chip....
Bad chip needs to be
replaced.
Learn how to replace bad ic chip on the laptop motherboard
IC chip is soldered
to motherboard and the laptop now works fine.
if a chip is dead just replace it !!.
Advance ic chip removal process
How to remove ic chip
with 102 pins.
1st) Remove the chip
The
chip is removed then find the same chip
from another motherboard.
Place Flux around
the new chip in order to help with the soldering.
The
contacts need to be free of solder so the pins can't
short. Use the soldering iron to
brush
away excess solder from the joints.
The
old chip is removed. The new chip is now in place.
*Ensure that the
version number on the old chip is the same as the new chip.
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Step By Step Tutorial
Online Laptop Repair Training
for Individuals and Companies
Learn online from your home or office
Learn Anytime, Anywhere,
at Your Pace.
Why take Laptop training online?
Convenience
Flexibility
Affordable
Take these online courses to learn the latest Laptop technology.
Take these courses to prove to your employer that you have the skills & knowledge.
Motherboard Chip Level Repair
Different levels of motherboard component level repairs
For Example
Level 1 - DC Jack/Fuse Replacement
Level 2 - Power IC Replacement (6-12 pin ICs)
Level 3 - Controller IC Replacement (200-400 pin ICs)
Level 4 - BGA Rework Reflow (Northbridge / Southbridge / Graphics Chips)
Level 5 - BGA Reballing
DC JACK REPAIR
Laptop power problems are usually caused by a faulty/wobbly DC jack, which stops your laptop from recharging or powering up
Common Symptoms are:
+ Your laptop battery will not charge
+ Wobbly DC Jack Power Connector
+ Intermittent Battery charging
+ Screen Dims and brightens often
+ When power supply moved laptop turns off
+ The charging light may not illuminate.
+ A burning smell coming from the DC Jack
+ No Power
Power Problems
Laptop power problems are also caused by a faulty power sections on the
motherboard, which can stop your laptop from recharging or powering up
Common Symptoms are:
+ Turns off after a while
+ Not turning ON
+ Not charging battery
+ Power supply light blinking when inserted
+ Battery does not charge even though a new battery has been purchased
+ Battery does not charge even though a new Power supply has been purchase.
Laptop Lcd Screen Problems
Screen Corruption
Laptop display problems are also caused by a faulty screen or VGA chip on the motherboard, which can affect the display.
80% of the time its a fault with your onboard Graphics Card. These graphics chips are BGA form factor, Ball Grid Array chips
cannot be resoldered using convention soldering irons.
Common Symptoms are:
+ Multi Colours
+ Multi unknown alphanumeric characters
+ Blank Screen
+ White Screen
+ Flickering Screen
+ Lines on Screen
+ VGA Chip
+ Power Light but no display
DIM DISPLAY
Dim Display problems are usually caused by a faulty inverter or Cold
Cathode Fluorescent Lamp in side the screen, which stops your laptop
screen from illuminating.
Many companies tend to replace the screen if the CCFL is faulty, this
option is much more expensive, where as you can replace the CCFL for a
fraction of the price.
Common Symptoms are:
+ Faint Windows Logo
+ Turns on and Windows Login Sound is Present but nothing on screen
+ Blank Screen
HDD PROBLEM
Laptop HDD problems are usually caused by a faulty IDE Controller, HHD connector on the motherboard or a Faulty HDD.
Common Symptoms are:
+ IDE error
+ Operating system not found
+ Ntdlr missing
+ HDD hanging
+ Clicking noise from HDD
+ Whining noise
LIQUID SPILLAGE
Liquid Spills cause components to short on the motherboard. So the best
thing is to turn off your laptop immediately and mop downany excess
liquid with paper towels (do not use a hair dryer as that will cause
more issues).
Make sure the battery is removed immediately.
Liquid spillage can cause rusting if the laptop is not repaired immediately.
Common Symptoms are:
+ Keyboard Sticky
+ No power
+ Failure of drives
+ Motherboard Failure
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The laptop revolution is here to stay. And it is time for even an
average hardware engineer to update himself with laptop chip level
service knowledge
We are confident about imparting the technology to a professional or
hardware student who wish to move to the exciting world of laptop chip
level servicing.
eLearning that works
LaptopRepairTrainingCollege.com, provides online Laptop Repair Training
courses. We are committed to being the premier online Laptop Repair
training center in the world, by offering the best selection of
comprehensive step by step training on Laptops online, at simply
incredible prices.
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25+ Best PC repair Utility ToolsDownloadable Computer Repair CDs
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