Today i am going to explain you what is Step Down Section Step down means where voltage going to regulate and reduced. there is one voltage regulated chip distribute 3.3v and 5v to respected sections. this voltage called always voltage because when laptop is off condition that time this voltages must be present and live. -~-~~-~~~-~~-~- Download Desktop and Laptop drivers for HP, Lenovo, Dell, Sony, Asus, Acer etc. http://saishtech.com/ Download HP, Lenovo, Dell, Sony, Asus, Acer Laptop Motherboard Schematics http://saishtech.com/schematics/ Download Laptop & Desktop Bios http://saishtech.com/ Download HP, Canon, Epson, Brother, Ricoh, Samsung, Xerox Printer Drivers & Reseters http://saishtech.com/ Watch Laptop Repair Videos and Laptop Repair Course in Hindi Follow us on Twitter https://twitter.com/saishtech Follow us on facebook https://www.facebook.com/hitshortfilm Follow us on Google Plus https://plus.google.com/u/0/117581417... Follow us on Linkedin https://www.linkedin.com/in/deepak-ra... Follow us on Reddit https://www.reddit.com/user/saishtech

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