FIX GPS Galaxy S

ปัญหา GPS ของ Galaxy S เกิดจาก Hardware ผมสันนิษฐาน เกิดจากจุดเชื่อมต่อระหว่างเสาอากาศและแผงวงจรไม่สัมผัสกัน เลยเราต้องทำให้มันสัมผัสกัน

ดังนั้้นต้องมีการเปิดฝาเครื่องออกมาทำ แต่วิธีการนั้นไม่ยาก

ก่อนทำ รับดาวเที่ยวได้ 5 ดวง

หลังทำ รับสัญญาณดาวเทียม 8 ดวง

ตำแหน่งที่หยดตะกั๋ว

วิธีการผมได้มาจาก
http://forum.xda-developers.com/showthread.php?t=878970


วิธีการแกะเครื่อง ดูได้จาก

***การเปิดฝาหลังเครื่องออกมาทำให้เครื่องท่านหมดประกันได้ และเสียหายได้ โปรดรับความเสี่ยง และทำด้วยความระมัดระวัง

ก่อนทำ และหลังทำให้ผลต่างกันมาก แค่หยดตะกั่วไปนั้นแผงวงจร ส่วนที่เชื่อมตัวระหว่าง เสาอากาศ แค่นี้ก็เรียบร้อยครับ

ATC (Air traffic control)

Air traffic control

Air traffic control (ATC) is a service provided by ground-based controllers who direct aircraft on the ground and in the air. The primary purpose of ATC systems worldwide is to separate aircraft to prevent collisions, to organize and expedite the flow of traffic, and to provide information and other support for pilots when able. In some countries, ATC may also play a security or defense role (as in the United States), or be run entirely by the military (as in Brazil).

Preventing collisions is referred to as separation, which is a term used to prevent aircraft from coming too close to each other by use of lateral, vertical and longitudinal separation minima; many aircraft now have collision avoidance systems installed to act as a backup to ATC observation and instructions. In addition to its primary function, the ATC can provide additional services such as providing information to pilots, weather and navigation information and NOTAMs (Notices to Airmen).

In many countries, ATC services are provided throughout the majority of airspace, and its services are available to all users (private, military, and commercial). When controllers are responsible for separating some or all aircraft, such airspace is called "controlled airspace" in contrast to "uncontrolled airspace" where aircraft may fly without the use of the air traffic control system. Depending on the type of flight and the class of airspace, ATC may issue instructions that pilots are required to follow, or merely flight information (in some countries known as advisories) to assist pilots operating in the airspace. In all cases, however, the pilot in command has final responsibility for the safety of the flight, and may deviate from ATC instructions in an emergency.

Although native language for the region is normally used, English language must be used if requested, as required by the International Civil Aviation Organization (ICAO.)^[1]

Read more : http://en.wikipedia.org/wiki/Air_traffic_control

GPS (GLOBAL POSITIONING SYSTEM)

GENERAL INFORMATION ON GPS

The Global Positioning System (GPS) was designed as a dual-use system with the primary purpose of enhancing the effectiveness of U.S. and allied military forces. GPS is rapidly becoming an integral component of the emerging Global Information Infrastructure, with applications ranging from mapping and surveying to international air traffic management and global change research. The growing demand from military, civil, commercial, and scientific users has generated a U.S. commercial GPS equipment and service industry that leads the world. Augmentations to enhance basic GPS services could further expand these civil and commercial markets.

GPS is managed by the National Space-Based Positioning, Navigation, and Timing (PNT) Executive Committee, supported by the PNT Executive Secretariat (http://www.pnt.gov). The PNT manages GPS and U.S. Government augmentations to GPS, consistent with national policy, to support and enhance U.S. economic competitiveness and productivity while protecting national security and foreign policy interests.

The basic GPS is defined as the constellation of satellites, the navigation payloads which produce the GPS signals, ground stations, data links, and associated command and control facilities which are operated and maintained by the Department of Defense; the Standard Positioning Service (SPS) as the civil and commercial service provided by the basic GPS; and augmentations as those systems based on the GPS that provide real-time accuracy greater than the SPS. GPS permits land, sea, and airborne users to determine their three dimensional position, velocity, and time, 24 hours a day in all weather, anywhere in the world.

From our site, you may view or download current and archived GPS satellite information such as status messages, precise ephemeris data, and almanacs.

Specific, operational GPS information may be obtained from the links below or from the links on blue navigation bar at the left.

Read more : http://www.navcen.uscg.gov/gps/default.htm