Learn From The Expert
This is a fully comprehensive instructional course in getting into the business of repairing all makes of laptops. 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
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Would love to know how you diagnose motherboards on a component level. What tools do you use?
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.
What are common faults on mainboards?
Do certain components fail? Is there a trend as to which parts fail quite often?
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.
Dell 1525 Inspiron that says system does not recognize the installed battery this system will not charge the battery.
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.
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.
|Convenience: – Download 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|
|Learn New Innovative and Productive Techniques: Discover new ways to be productive throughout your day with these Repair tips and tricks.|
|Flexibility : Attend classes at anytime and from anywhere in the world|
|Available 24/7 Middle of the night. You need a quick answer on how to get a task done on your Laptop. Jump online and read about the fault. Problem solved.|
|Affordable :We provide high quality courses with much lower tuition than other training organizations.|
|Clear, and Comprehensive Training Our Trained Laptop Repair Specialist will help you with any questions, provide you additional resources, and keep you up-to-date with rapidly changed technologies.|
|Technical Questions ? Find Answers to Your Laptop Problems Now|
|Secret Codes: Know All The Most Important New Secret Bios Codes|
We strive to be the number one institute offering the most competitive Laptop courses which cover the entire essential areas varying from its hardware to software parts. Hence, after completing the course you will be able to fix any laptop problem.
Learn How To Make Money With Dead & Broken Smartphones
Niche Skill - Right now, the skills taught by the Laptop Course aren't widely known, in 5 years they'll be as commonly known as PC Repair. So now is the time to establish a dominance of your local/national market before the competition discovers it.
Scarcity = Higher Profit - Given the fact that this is currently a niche skill, you can earn double the wage of someone who does more common tech repair. But to enjoy this over-valuation, you have to take advantage of it now!
Prices Rising - A few years ago, people thought it ridiculous to spend more than a couple hundred dollars on a Laptop. Now, new models are coming out at $2000 and this will only increase. This means two things for our students: 1. People will spend more on repairing their Laptops. 2. People will spend a lot more on refurbished Laptops. This means the potential customer base will boom in the next couple of years.
Laptops Being Kept For Longer - Given the higher price tags and better build qualities of today's Laptops, people are no longer regarding Laptops as temporary commodities.
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