This is how I repaired E90 mic problem

[silveraxe]

Firstly, I opened up the nokia E90 to find that the crystal mic was cracked due to physical damage (6 connection pin crystal mic)

I bought a few mics, took my hot air gun and removed the old mic and fitted the new one, realised that it does not work, then I read on forum that
heat from an airgun is prone tokill the mic with heat, so I wasted a few mics this way. Eventually I ordered the 4pin GOLD mic, and then
followed this diagram below and now my mic works 100000%

I took 4 gold insulated wires, and connected the 4 pins on the E90s pcb to the 4 pins of the gold mic, but its important to know which wire goes where, if you follow the diagram you will figure it out.

NOTE: on the E90 pcb (6 pin) 3 points belong to ground.

here is the actual pic of the phone I have just repaired,

http://i460.photobucket.com/albums/q...1/DSC00042.jpg
WBR

[saiftc2]

good work ..... thanx sir keep it up

Dr.Saif (Tc)