Difficulty

Easy

Steps

9

Time Required

                          10 minutes

Sections

2

  • 5 LED 6 Mode Rear Bike Light Teardown
  • 5 steps
  • LED
  • 4 steps

Flags

1

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  • Back5 LED 6-Mode Rear Bicycle Light

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Introduction

Note the type found here does not have a brand name on the device and are sold under various fake brand names.

What you need

Step 1

              5 LED 6 Mode Rear Bike Light Teardown
  • Obtain the necessary tools

Obtain the necessary tools

1024

Step 2

  • Insert coin or any flat object into edge of light cover
  • Pry open until cover loosens

Insert coin or any flat object into edge of light cover

Pry open until cover loosens

Step 3

  • Remove the single Phillips #00 screw holding the circuit board in place
  • Remove both AAA batteries

Remove the single Phillips #00 screw holding the circuit board in place

Remove both AAA batteries

Step 4

  • Remove both Phillips #00 screws holding the clip in place
  • Remove the clip with a flat object
  • The button will fall out when removing the clip. Do not lose it!

Remove both Phillips #00 screws holding the clip in place

Remove the clip with a flat object

The button will fall out when removing the clip. Do not lose it!

Step 5

  • Congratulations! You completed your device teardown!

Congratulations! You completed your device teardown!

Step 6

              Remove LEDs
  • Warm up the soldering iron
  • Tin the tip of the soldering iron
  • Apply a small amount of solder to the tip
  • Wipe on a damp sponge
  • Touch the tip of the soldering iron to the led solder to liquify it
  • Apply solder wick to absorb solder
  • This guide uses a desoldering pump instead of desoldering wick. The wick would work better.

Warm up the soldering iron

Tin the tip of the soldering iron

Apply a small amount of solder to the tip

Wipe on a damp sponge

Touch the tip of the soldering iron to the led solder to liquify it

Apply solder wick to absorb solder

This guide uses a desoldering pump instead of desoldering wick. The wick would work better.

Step 7

  • Once you remove enough solder, remove the LED

Once you remove enough solder, remove the LED

Step 8

              Insert New LED
  • Place the new LED through the open holes
  • The LED should cover the schematic symbol on the circuit board and the flat edge of the LED should line up with the tip of the diode symbol shown by the arrow
  • If the LED does not stay, you can tape it in place on the opposite side of the board
  • Warm up the trace on the circuit board and the LED lead with the soldering iron
  • Wipe your soldering iron on the damp sponge every time you pick it up
  • Apply solder to the lead until the hole completely fills with solder

Place the new LED through the open holes

The LED should cover the schematic symbol on the circuit board and the flat edge of the LED should line up with the tip of the diode symbol shown by the arrow

If the LED does not stay, you can tape it in place on the opposite side of the board

Warm up the trace on the circuit board and the LED lead with the soldering iron

Wipe your soldering iron on the damp sponge every time you pick it up

Apply solder to the lead until the hole completely fills with solder

Step 9

  • Reassemble by following the teardown in reverse order
  • You now have a customized bike light or a working LED!
  • We replaced the middle LED with blue and the two outside LEDs with white. We set the bike light on the last mode. Enjoy!
  • Certain colors of LEDs may be illegal as rear bike lights. Use at your own risk or for a different application!

Reassemble by following the teardown in reverse order

You now have a customized bike light or a working LED!

We replaced the middle LED with blue and the two outside LEDs with white. We set the bike light on the last mode. Enjoy!

Certain colors of LEDs may be illegal as rear bike lights. Use at your own risk or for a different application!

To reassemble your device, follow these instructions in reverse order.

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Author

                                      with 1 other contributor 


                    Alex Sireci

Member since: 09/30/2013

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Team

                       Cal Poly, Team 14-8, Forte Fall 2013                        

                                                  Member of Cal Poly, Team 14-8, Forte Fall 2013 



                    CPSU-FORTE-F13S14G8                     


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