8210 no network - How to repair it ?

[unlockphone]

I've a 8210 that cannot find any network. The error message is " No Network Coverage ".
This phone has not been flashed before. If do a network search, it says " No Network Found". How to repair it?

[GSMlearner]

change duplex 8103.

[trafix]

try to clean cobba, z600, z700 area with lighter fluid or some flux and **** some hot air... medium temp, i have fixed this before, best regards

by the way, have the phone ben dropped before this occured?

[unlockphone]

Originally posted by trafix:
<STRONG>try to clean cobba, z600, z700 area with lighter fluid or some flux and **** some hot air... medium temp, i have fixed this before, best regards

by the way, have the phone ben dropped before this occured?</STRONG>

As far as I can tell, no , however I'm willing to try anything.
As for your advice, I'll try, I've cleaned the Hagar but it is of no use.

Unlockphone.

[unlockphone]

Originally posted by rcgoel:
<STRONG>change duplex 8103.</STRONG>

What's the part list number for the chip?

[zbomberman]

hi.
i had a 8210 which got network sometimes and somtimes not.
i tooke it to nokia service center they tell they fix i test it the same problem very bad network. i take it back to them they said they gonna do their best then they told me after hard work they don;t have solution for this prob.
so guys what do u think???
can anyone tell me soltuion for it.
the nokia servce center they upgraded the sw and still the same prob.

[CellM@n]

Have you try to replace the VCO , on the left side in metal Cover ( FDK ... )

Try it.

I 've made it 3 times before.

Rgds

[zbomberman]

hi BBand,

this solution is it for my problem???
if yes plz can you be more specific???

thaks a lot.

take care
bye

[CellM@n]

Try to replace part that labeled FDK ..., its place is on the left side ( metal ). I cant give you specific part because i dont have service manual here.

The second solution, antenna switch is most common problem in 8210.

Take care too 4 u
Mail me if u want

Note : Any Siemens Service Manual???


Rgds

[themobileking]

HI
BBand is right
themobileking@yahoo.com

[zbomberman]

thnaks guys for help
i found it,
can you tell me plz where can i found from these chip?

[Hanukkah]

Originally posted by zbomberman:
<STRONG>hi.
i had a 8210 which got network sometimes and somtimes not.
i tooke it to nokia service center they tell they fix i test it the same problem very bad network. i take it back to them they said they gonna do their best then they told me after hard work they don;t have solution for this prob.
so guys what do u think???
can anyone tell me soltuion for it.
the nokia servce center they upgraded the sw and still the same prob.
</STRONG>

If i'm correct.. intermittent signal problems like this is from the antenna switch beside the Power Amps. anyone more experience wish to correct me?

[zbomberman]

this one that you r saying about is known i think and we try it but it is not working at all.
so i have to do as they advised me to replace the fdk chip on the board when i will get one i am going to post my result here.

thanks all of you guys for ur answers.

take care
bye

[Pandemonio100]

hI i have resolved one canghed the PA module, on test set when the power amplifier is low all Nokia not recognized or not register the network.
This is the path of received gsm signal:
Antenna,Diplexer(Z503),TX/RX switch(Z504),PCN filter(Z602),CRFU3(Mixer N600), LC 187 Mhz filter(L604), CRFU3 (Mixer N600), SAW filter 71Mhz (Z700), SUMMA (N700), 13MHz filter (Z701), SUMMA, COBBA (N200).

[zbomberman]

hi guys i tried to replace the fdk it didn't work the same problem some phone work with this solution others don;t.

dear Pandemonio100
i didn;t understand what you mean can you explain more to me.

thanx in advance.