I posted this solution for someone with the same phone with service issues. Follow the same steps to disassemble and clean. The phone has corrosion from the moisture on the backside of the plug on the bottom. This is fooling the phone into thinking that there is a headset plugged in when there is not.
Let me know if this helps. And please don't forget to rate. Feel free to contact me via email if you need additional help.
posted on Sep 11, 2008
87%, 19 votes
Get a T6 screwdriver, remove the battery cover, battery, and sim. Next, gently pop off the antenna cover at the top of the phone exposing 2 of the 4 screws in the back of the phone. The other two screws are already visible near the bottom of the battery compartment.
After the 4 screws are removed, carefully use your fingernail or small flat tool to seperate the back of the phone (D housing) from the keypad housing (C housing). Once this is seperated, you will see the back of the main motherboard
. Lift up on the board gently from the bottom. You will notice that at the top, the main cable
plugs into the board. GENTLY unplug this cable. Be very careful not to damage the plug or the channel.
Once the cable is free, the board will pretty much fall out of the phone. On the back of the phone (the one with all the heat shields) - you can pop off the heat shields with a small screwdriver or knive CAREFULLY!!!! Remove them all. Look for any signs of corrosion, especially at the top and top right. This should be right above the battery contact terminals. This is where your RF modulator is.
Brush the entire back of the board with 91% rubbing alcohol and a soft to medium bristled toothbrush.
Also, make sure your phone still has an antenna. Sometimes, if this model phone gets dropped, the antenna cover will pop off and the antenna will go flying (just snaps into the back housing). Many people pick up the cover and snap it back on, not realizing they are missing an antenna. To see what the antenna looks like, go to ebay
and search for a Nokia
6102i, or 6103 antenna. If your phone does not have this part, order it, snap it in place so that the little metal contact will touch the main board and you're good.
If you do have this part in place, then continue with the alcohol bath. Also, on the front side of the board, you will notice a white sticker which retains all the surface switches of the phone. You can very carefully peal this off exposing all of the contact surfaces for the switches. Make sure this is clean as well.
Dry the phone with a hairdryer. (Rubbing Alcohol evaporates fast, but it lingers longer under the chipsets
so it is good to bring the temperature of the board up to speed up the process). A hair dryer won't get it hot enough to do damage.
Once you are sure all the alcohol in the phone is dry, reassemble the phone in reverse order of the way you took it apart.
Let me know what you find out after performing the above steps. If you find severe corrosion, email