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| [title] Replace the old with the new (soldering) | |
| [* black] Disconnect all power connections before you start | |
| - | [* black] Prepare your non-static work environment if possible. Ground yourself, war anti-static shoes, work on a non-static mat, etc. |
| + | [* black] [http://www.wikihow.com/Ground-Yourself-to-Avoid-Destroying-a-Computer-with-Electrostatic-Discharge|Prepare your non-static work environment] if possible. Ground yourself, war anti-static shoes, work on a non-static mat, etc. |
| [* black] Have the replacement transistor ready for deployment | |
| - | [* black] Heat up the soldering iron (350- |
| + | [* black] Heat up the soldering iron (350-400 Celsius should do depending on your lead, iron welder, etc.); avoid temperatures that are far above melting due to the sensitivity of SMD devices, see also the [http://www.onsemi.com/pub_link/Collateral/SOLDERRM-D.PDF|On Semi guide] |
| [* black] Remove the broken transistor by carefully heating the SMD pads that connect T1 or T2 to the mainboard PCB. Because there are three pads, try circular rotation while using the tweezer to pull of the old device | |
| [* black] Use the solder suction pump to remove any old solder metal around the transistor pads | |
| [* black] Note: This guide is assuming that the NPN transistor has the following pinning (SOT-23): TOP LEFT: Emitter TOP RIGHT: Base BUTTON: COLLECTOR, see the data sheet and mainboard picture. | |
| [* black] Finally, solder the new transistor the the pads. If you face difficulty with handling the device, tweezers, etc. try [http://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Daps&field-keywords=electronics+magnifying+glasses|electronics magnifying glasses] |