Samsung SCH-3500 Logic Board Replacement

Turn Samsung SCH3500 around so that the back is facing you. Depress locking tab on the back of the phone with a finger or thumb.

Slide battery toward bottom of the phone, ~1/4 inch, to clear the hooks that keep it secured to the back of the phone.

Lift battery away from phone case.

The battery is now removed from the device. Congratulations.

Grasp antenna firmly and rotate counterclockwise to unscrew it from the phone.

When unscrewed, pull the antenna straight up and out.

Pull guide tube free from its retaining ring and slide it out the top, like the antenna (optional).

The antenna and its guide tube are now removed from the phone. Congratulations.

Remove the four screws using a T6 Torx screwdriver.

Work from the bottom of the phone, separating the two halves of the case.

Angle the rear case half away from the top of the front case half, pivoting the hooks out of their clasps.

Disconnect the antenna ribbon cable from the logic board at the Zero Insertion Force (ZIF) connector. The brown portion of the connector lifts up to release the cable end.

The Back Cover is now removed. Congratulations.

Remove the connector for the earpiece speaker, located on the upper end of the logic board.

Turn the front cover over, gently prying the logic board away from the front cover. It will remain attached by two wires from the front of the board.

Work the microphone out of its socket on the front cover; it will remain attached to the logic board, its wires are soldered.

The logic board is now removed from the phone. Congratulations.