iFixit

The EM10 charging filter is located next to the power connector on the motherboard.

If the filter is missing or obviously broken, move on to STEP 18

Use a multimeter to test the EM10 filter - measure the resistance between each of the yellow solder pads, and then between each of the cyan solder pads. If everything is OK you should have close to 0 Ohms between each set of pads. You should NOT have any connection between the cyan pads and yellow pads. If the filter fails either test it needs to be replaced.

Remove the faulty EM10 filter. Use a soldering iron to melt the solder and gently lift off the filter with tweezers or pliers, being careful not to pull the copper tracks off the motherboard.

A replacement EM10 filter is available HERE (as at 01/01/12) no doubt other suppliers exist

Solder new EM10 filter into place, ensuring correct orientation. If required, check the new filter with a multimeter to confirm before installing.

Alternate method - Bridge the solder pads that correspond with each set of pads - yellow to yellow and cyan to cyan

Bypassing the EM10 filter may affect the system performance and is not recommended