The following post has been taken from great Dogbert’s blog : http://dogber1.blogspot.in/2009/05/table-of-reverse-engineered-bios.html BIOS Password Backdoors in Laptops Synopsis: The mechanics of BIOS password locks present in current generation laptops are briefly outlined. Trivial mechanisms have been put in place by most vendors to bypass such passwords, rendering the protection void. A set of master password […]

Screen sizes are normally measured in inches from one corner to the corner diagonally across from it. This diagonal measuring system actually came about because the early television manufacturers wanted to make the screen size of their TVs sound more impressive. Measuring your screen is quite easy: Learn more tips from laptop repairing institute; Step […]

#1 1. Is there a “generic” current profile for laptops or does each laptop have it’s own unique current profile? 2. In your example for DV9000, you say “0.01 – 0.3 -0.9 – 1.1 – 0.9 – 1.2 -1.45 then display” Can you explain what happens at each current change state? 3. Do you need […]

#1. mbx-165 with circuit protection problem Sol: when the PQ20 -PUMB2 is not solder in the mobo i get the correct voltage 9v at gate in PQ26 DC_IN_G1 Same as the motherboard, the pq26’s G (DC_IN_G1) has 18V so DC_IN_R not present. DC_MOS_IN is 18V, pq25’s G is 9V. So charging chip max1909 should be […]

#1.Toshiba Satellite A205-SP4077, Core 2 Duo. While replacing cracked LCD tried several panels with no success. Then noticed LVDS RX2- signal from motherboard is missing. Solution: It is the north bridge dry joint, it is common fault of this model. Do BGA reworking on north bridge, and replace the north bridge if bga reworking doesn’t […]

Dear All , I am Vipin from CHIPTRONIKS (India), and i am writing this article in order to clear some important concepts of bga rework stations, bga chips and their compatibility. IR & Hot Air : Honestly speaking  GO for high power IR bga machine like RE8500 , more power and complete IR. You can […]

Good Evening Everybody, I am  Amit ,senior engineerat CHIPTRONIKS ( VD Intellisys Technologies Pvt.Ltd) . Often our clients ask for lcd screens from us ,as we are leading supplier of lcd screens. So today i came to write this article . If you have any problem or requirement do call us at 011-43464998. To find […]

Troubleshooting “DEAD” Laptops Our Service Centre CHIPMENTOR repairs around 100  laptops a week and today we will decipher the myth surrounding the dead laptops .  Some of our steps have been taken from internet for more description “Dead” means a different things to different people but usually means from truly dead to “No Display” We […]

A Blue Screen of Death (BSOD),  is technically called a STOP error. It occurs when Windows suffers a serious error and is forced to “stop” completely. Since a blue screen error gives you no choice but to restart, troubleshooting it  can be difficult.  Every STOP error includes a STOP code that can we can research to fix the […]

CHIPTRONIKS opens its new centre at Jalandhar . With the same mission of teaching repairing everything , we have established a model center for teac teaching laptop repairing to students . Advanced  labs , dedicated trainers and excellent after-training services will certainly help to build a great career