FC660m arrow cluster LED modFound some unused LED holes while analyzing the PCB of my FC660m.
Tryed things out and we seem to have a new thing going on here! An easy, working LED mod!
Materials & Tools>4x 1.5mm LEDs in the colour of your choice
>1x 1kΩ resistor (Brown, Black, Red) or 1kΩ micro resistor (102 written on it) *MIGHT NOT BE NEEDED*
>Solder
>Soldering Iron
>Small Philips head screwdriver
>Side Cutters
Resistor*RESISTOR MAY NOT BE REQUIRED*
Since the LEDs are in series, they seem to produce brighter colours without the resistor, just solder a small piece of wire there instead, BUT this may burn out the LEDs or blow up the circuit board or something. It worked fine for me but what do I know? It's hard to trace the PCB without looking at the front. Do so at your own risk.
Alright, above the arrow cluster on the vack of the PCB is to tiny contacts labeled "R4" those are the contacts you need to solder the resistor to. Simply bend the resistor so that the leads touch the contacts and solder them into place. Trim off any part of the resistors leads that are sitting past the pads with sidecutters.
It doesn't matter which lead touches which contact because resistors aren't polarized, make sure that the two pads aren't soldered together, otherwise your resistor will shortout of the circuit.
LEDsNow thread the LEDs through the top of each switch and through the holes in the PCB, LEDs are polarized so make sure that the longer lead (the anode) is sticking through the holes labeled with a "+". Next bend the leads of the LEDs from the back like in the picture below so that they stay in place while you solder them.
SolderSolder each of the LED leads into place, remember not to let the joints touch!
TrimSnip those bad boys off with the side cuttters
Finished PCBThere we go!We have lift off! I'll definately have to get some blue LEDs to match the rest on the board.
Caps onMore