Hi all!
Well this topic is pretty hardware so all of U will be able to try this this things,
Mostly the problems are with network so Ill start with this,
First of all always run a test with Eeprom tools 3.1 or 4.0,
Most problems with this are related to PA or to antenna switch,
Checking antenna switch is pretty simple,
next tip will help U:
3310/3330
put the pcb with back up, PA in your left, then /U first must remove the antenna swithch/ start counting from left to right connect 6,12 and 16 pin with a wire, phone must get network /only in 900Mhz/
8210
Same position, /PA in Your left/ , connect 1,7 and 11 pin,
6210
PA under IR port,
then connect 3,9 and 15 pins,
/Remember this tests are only for 900MHz, /
Some tricks for all nokia phones:,
After a test with Eeprom tools :
PPM/MCU Checksum failed: Full flash the phone, If not help U must change the flash chip,
CCONT Interface failed:Reheat or change CCONT , If not help its mostky MAD or PCB foult,
Cobba parralel/Serial failed:
Reheat or change Cobba chip, If not help reheat MAD , or change it, or PCB foult,
EEPROM Tune Checksum Faied, MOstly U need to change flash chip, reflash the phone fix IMEI and clear SP locks,
NOw Ill comment problems related to models:
3210:
Always charging: Reheat, change CCONT
No network: Reheat Cobba,CCONT,PA,IF filters,
No ringer: Connect Pin 6 of user interface chip to upper right pin of the ringer
3310:
Network is found but cant make calls: Reheat CCONT, Cobba and check antenna switch,
No charge: Check F200
No charge with Li-Ion battery: reset software with nokia tool 1.9 by rolis
Battery goes empty when U have a call: This is a PA foult, change it,
Reconect charger massage: solder a wire from R204 to R200, to the sides looking to Chaps chip,
Keypad not work proper: Change R414 and 415, or user interface chip,
Cant power on but charging goes, : Reheat CCONT or change it check voltage on power on button if there is voltage change V202
Insert SIM card: Reheat CCONT
Phone resets or turn off by it self: Change or remove L511, or change r529 from2,2kOhms to 1kOhm /Tested-works 100%/
No ringing: connect Pin 6 of user interface chip with upper pad of ringer,
Display problems: Try new one ore change C409 and C410
8210:
No signal: Mostly PA,
No signal unless IR active:Try change C153,
No vibra and lights: Change user interface chip,
No charge:Remove /or change/ V100
Charge Ok but will not power on: Reheat CCONT If there is voltage on power on key change V116
For all DCT3 phones : Network playing and melody run slow: Change 32MhZ clock,
8310,6510:
No charge:Check F100,
Key pad dont work: Check or change Z301, this is valid for all new nokias but I cant remember the number of the chip,
For all nokias:
Phone hangs, and cant be fixed with flash: change the clock /26MHz/ If it dont work U need to reball HAGAR chip,


Some more tips: Be pation, use Ur brain, service manual, ask questions,
More, Be in love with dead phones, the point: U cant kill it more, /simple precheck: apply 4V to phone from a stabilised unit, if consuption is around 20mA phone is still alive/ , Ive learned alot diging dead phones,
Good luck to all of U!




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