Computer CPU Processors

TOP 10 - Dec Defects and Solutions for Notebooks and Netbooks

TOP 10 - Dec Defects and Solutions for Notebooks and Netbooks

1. Notebook hangs over boots or resets after some time of use

Seen causes and solutions already tested:

A) Check the specifications of voltage and current power supply are in
according to the needs of your notebook, if not provide a source
compatible

B) Remove the battery and test again, faulty battery cause this symptom

C) Use programs Virus checkers and cleaners registration system and analyze the
Notebook

D) Use diagnostic programs to check possible errors in memory and other peripherals

E) faulty RAM and Hard Disk with Bad Blocks or very fragmented can cause
This symptom, if you can test and make another RAM function tests
HD

F) Check the notebook from overheating and the cooling fan inside
are calling after a while of use the thermal paste on the processor can be
worn and the ventilation system can be disrupted by internal dust in these
cases, the notebook will be disassembled and cleaning procedures and internal
exchange of thermal grease should be executed.

2. Notebook not boot and hangs on the screen before loading the System

Seen causes and solutions already tested:

A) Try to recover the Operating System, corrupted files can cause this
Sinoma

B) Change the boot sequence and press the System Setup (Linux or Windows) for a
CD Boot

C) Make test operation or replace the HD, the same defects that cause Sinoma

D) Check the specifications for voltage and current power supply are in
according to the needs of your notebook, if not provide a source
compatible

E) Remove the battery and test again, faulty battery cause this symptom

F) Use programs Virus checkers and cleaners registration system and analyze the
Notebook

G) Use diagnostic programs to check possible errors in memory and other peripherals

H) faulty RAM and Hard Disk with Bad Blocks or very fragmented can cause
this symptom, it can test and make another RAM function tests
HD

3. Notebook LED panel lights no longer appears on screen Video

Seen causes and solutions already tested:

A) Check the specifications for voltage and current power supply are in
according to the needs of your notebook, if not provide a source
compatible

B) Remove the battery and test again, faulty battery cause this symptom

C) Make sure the HD Led flashes indicating that the OS is being loaded
If you examine the solutions for defects of numbers 7:08

D) Defects in RAM, Processor, HD, and other peripherals can cause this
symptom, test them on another Notebook or remove them one by one and then
testing to see if Peripheral has a short that may be causing this symptom (NOTE:
Before  Peripherals removing one by one dsligue the Notebook)

E) This symptom can be caused by a general failure in the notebook CPU
Motherboard, this failure can be derived from the IC BGA Solder Cold Video
Controller's Motherboard  Notebook, in which case the Board shall be recovered in
the Laboratory of Maintenance by Specializes in Infrared Training Station, Hot Air or
other specific  rework of BGA Solder

4. Notebook will not turn on and not turn anything when you press the power button

Seen causes and solutions already tested:

A) Check the label to identify the power supply if the specifications
voltage and current are consistent with the needs of notebook (The label
underneath Notebook also has this information), if not provide a source
compatible

B) Remove the battery and test again, faulty battery cause this symptom

C) Make sure the connector input voltage VCC Notebook is right, he usually
break internally and cause this symptom, in this case the notebook will be
disassembled Laboratory Maintenance and your Motherboard should be repaired
with exchange for this Connector

D) Defects in RAM, Processor, HD, and other peripherals can cause this
symptom, test them on another Notebook or remove them one by one and then
testing to see if Peripheral has some short that might be causing this symptom
(NOTE: Before Peripherals removing one by one dsligue the Notebook)

E) This symptom can be caused by a general failure in the notebook Motherboard
CPU, it fails can be derived from the IC BGA Solder Cold Video Controller's
Motherboard  Notebook, in which case the Board shall be recovered in the
Laboratory of Maintenance by Specializes in Infrared Training Station, Hot Air or
other specific  rework of BGA Solder

5. Laptop not charging the battery

Seen causes and solutions already tested:

A) The battery may be damaged and should be recovered or replaced

B) Defects in the Battery Charging Circuit Card CPU can be damaged,
Plate must be disassembled and repaired in lab maintenance

6. Notebook reports that the battery is charged 100% more for about 20%

Seen causes and solutions already tested:

A) Battery may be under Memory Effect, it reports a false charge and Battery
cause shutdowns estantâneos Notebook, Battery should be recovered Effect
memory or replaced

7. Notebook league boots, plus the image on the LCD screen appears weak and / or
dark

Seen causes and solutions already tested:

A) Connect an external monitor on the VGA output of your notebook, if the picture is
good indication that the  Lamp CCFL Back Light from the LCD is off

B) Use a tester LCD lamp and check if it is burnt, if
replace the lamp or the entire LCD

C) If the lamp lights use an LCD Inverter Tester and verify that it is generating
High voltage to light the lamp, if not test with another test or LCD Inverter
Flat Cable from the video signals, defects in the same cause this symptom

8. Notebook League Initializes plus the LCD screen appears with blank screen or image defects

Seen causes and solutions already tested:

A) Connect an external monitor on the VGA output of your notebook, if the picture is
good indication that the defect may be on board Electronic Screen LCD Flat cable
or video signals,  test with another screen LCD or other Flat cable

E) This symptom can be caused by a failure from the Cold Solder BGA IC Controller
Video Card Mother's Notebook, in which case the Board shall be recovered in
Laboratory Maintenance of Professional Specializing in Infrared Station, Air
Hot or another specifically for rework on solder BGA

9. Notebook does not accept and / or failed some keys randomly

Seen causes and solutions already tested:

A) The network of contacts Keyboard can be oxidized and cause this symptom, the
Keyboard should be dismantled for repair or replacement

10. Notebook gives error reading or writing in some medias CD / DVD

Seen causes and solutions already tested:

A) dirt on the lens of the optical drive might be causing this symptom, the tray open and
wipe the lens with dry cotton

B) The optical drive unit may be misaligned or misplaced the power of the laser, the
it should be replaced or disassembled for recovery

About the Author

 

This article was written by Teacher Marcos Jeronimo of  the Clube dos Notebooks,
reproduction and dissemination is permitted provided that this source is informed,
Request Contact for Courses and Seminars throughout Brazil, and abroad
comments of this article may be sent to the e-mail marcos@clubedosnotebooks.com.br if you prefer to search this and other articles
visiting the site: http://www.clubedosnotebooks.com.br/

PS3 YLOD cause and fix?

My daughter asked me to fix her PS3 YLOD issue thinking I work in electronics manufacturing filed many years and can give some help. She even showed me some links regarding the cause and fix of YLOD. After I did some research, here are my questions and see if any body can shed some lights on them.
1. It is hard to believe that overheating of the CPU/GPU will cause "crack" in the solder joint of BGA. Only mechanical shock/vibration will cause "crack". Overheating will only melt(hard to believe to me but if it is really hot) the solder. The melt solder will not flow all over the place, right? Not body mentioned that.
2. Now here is the contradicting part. People use heat gun to fix the "crack". It is possible to use heat to melt the solder to fill the crack. But what is the difference between this heat generated by the heat gun and the heat generated by the CPU?

yea its from the solder getting soft and the chips moving
this is how u fix it not sure if there is a better way this is the only 1 Ive seen

http://cgi.ebay.com/Broken-PS3-YLOD-PS360-Complete-Reflow-Repair-Kit-/150567233565?pt=Video_Games&hash=item230e81a81d

IR550 Rework & Repair Applications - BGA CSP CPU GPU