Sharp EL-520X Loose Circuit Board Wire Fix

ID: 163281

Description: In this guide, the repair that is demonstrated...

Steps:

1. Remove the single screw from the battery door using a Phillips #00 screwdriver.
2. Remove the battery door.

3. Remove two screws inside the battery compartment using a Phillips #00 screwdriver.
4. Remove the four screws in the corners of the calculator using a Phillips #00 screwdriver.

5. Flip the calculator to the front panel and use an opening pick to pry around the sides of the panel to pop it open.
6. Gently lay it open to reveal the circuit board inside.

7. Using a de-soldering braid, remove the old solder on the area where the loose solar cell wire will be fixed to.
8. Be careful not to damage your circuit board with the hot soldering iron. Do not place the soldering iron tip near the circuit board for long periods of time.
9. Use a soldering iron rest, so you don't directly place the hot soldering iron on your working surfaces which may lead to damages.

10. Place the loose solar cell wire on to the de-soldered area of the circuit board and apply new solder on to that area.
11. Be careful not to damage your circuit board with the hot soldering iron. Do not place the soldering iron tip near the circuit board for long periods of time.
12. Use a soldering iron rest, so you don't directly place the hot soldering iron on your working surfaces which may lead to damages.

13. Carefully place the back panel back on to the calculator.

14. Secure the back panel with the screws you removed in Steps 1 and 2 using a Phillips #00 screwdriver.