6310i drops signal - GSM-Forum

tompepper · 08-05-2003, 12:17

I have a mint 6310i never even been out of its box but it drops signal after about 1 second, any ideas? I have reflowed entire board and still problem occurs

vule · 08-08-2003, 09:28

It is very difficult to determine problem without further testing...

Check if there is TX from phone...If not it could be PA or antenna switch...

BR

Vule

B21Playa · 01-19-2004, 23:19

DID U MANAGE TO FIX THIS PROBLEM

I HAVE A 6310I WITH SAME PROBLEM, LOW SIGNAL, AND SOMETIMES GOES TO ZERO

ReviveR · 01-19-2004, 23:46

@b21playa

Try to bypass the external antenna connector
If not, change antenna switch............

MAJESTIC PIRATE · 01-21-2004, 00:20

change ant. sw , pa , hagar its gonna be ok

sc0tty · 01-26-2004, 16:59

Hi Guys,
Again similar problem, signal drops after a few mins on a call and doesn't come back for up to 10 mins afterwards.

All this antenna replacement, pa(???) stuff is over my head, is this definietly a HW problem or could it be the firmware?

Would a Nokia Centre charge much to fix this?

Thx

StudioGSM · 01-26-2004, 19:32

Quote:

Originally Posted by MAJESTIC PIRATE

change ant. sw , pa , hagar its gonna be ok

hagar in 6310

?? Hmm, it's interesting

BR
StudioGSM.pl

GSM Coolhawk · 01-26-2004, 22:27

@MAJESTIC PIRATE

Hagar ??? Yeah like StudioGSM says, VERY intereting

I would like to see that 6310i, lets say HELGA instead should we. Well for the HELGA I have repaired a few 6310i's by reballing/changing the HELGA, but the most proper cause on 6310i is PA. You have to know that you can actually subsitute this PA for a 3310 PA PFO8109B. Just remember that you will loose 1900 MHZ band.

Also check antenna interface, same problem with this as with 6210, the "swicth over" switch which is inside the interafce takes care of external/internal antenna, if the phone have been in dusty places I've seen this get stuck in "external" mode.

Hopes this helps

Regards

StudioGSM · 01-26-2004, 23:25

Quote:

Originally Posted by GSM Coolhawk

@MAJESTIC PIRATE

Hagar ??? Yeah like StudioGSM says, VERY intereting

I would like to see that 6310i, lets say HELGA instead should we. Well for the HELGA I have repaired a few 6310i's by reballing/changing the HELGA, but the most proper cause on 6310i is PA. You have to know that you can actually subsitute this PA for a 3310 PA PFO8109B. Just remember that you will loose 1900 MHZ band.

Also check antenna interface, same problem with this as with 6210, the "swicth over" switch which is inside the interafce takes care of external/internal antenna, if the phone have been in dusty places I've seen this get stuck in "external" mode.

Hopes this helps

Regards

When you power on the phone, it searching for network. First it reciving signal (RX) and then it transmining (TX). See like in netmonitor in DCT3. When TX is switching on and your phone drop network, it mayby PA or antena switch. First check both. I raise for PA. This is simple

Correct me if I wrong.

BR
StudioGSM.pl

sc0tty · 01-27-2004, 10:42

Thanks guys,
but like I said earlier this stuff is way over my head, looks like I'm gonna have to pay someone to do it. Thanks for verifying that it is a HW issue and not the firmware, which I would have attempted.
Cheers

08-05-2003, 12:17	#1 (permalink)
tompepper Junior Member Join Date: Mar 2003 Location: UK Posts: 20 Member: 23916 Status: Offline Thanks Meter: 0	6310i drops signal I have a mint 6310i never even been out of its box but it drops signal after about 1 second, any ideas? I have reflowed entire board and still problem occurs

01-21-2004, 00:20	#5 (permalink)
MAJESTIC PIRATE Freak Poster Join Date: Dec 2003 Location: E G Y P T Age: 47 Posts: 336 Member: 45635 Status: Offline Thanks Meter: 20	6310 change ant. sw , pa , hagar its gonna be ok

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08-08-2003, 09:28	#2 (permalink)
vule No Life Poster Join Date: Apr 2002 Location: Radiometer Medical ApSBrønshøj Age: 51 Posts: 721 Member: 10854 Status: Offline Sonork: 1578988 Thanks Meter: 3	It is very difficult to determine problem without further testing... Check if there is TX from phone...If not it could be PA or antenna switch... BR Vule

01-19-2004, 23:19	#3 (permalink)
B21Playa Insane Poster Join Date: Apr 2003 Posts: 89 Member: 27226 Status: Offline Thanks Meter: 0	DID U MANAGE TO FIX THIS PROBLEM I HAVE A 6310I WITH SAME PROBLEM, LOW SIGNAL, AND SOMETIMES GOES TO ZERO

01-19-2004, 23:46	#4 (permalink)
ReviveR No Life Poster Join Date: Oct 2002 Location: Novi Sad, Serbia Age: 44 Posts: 1,343 Member: 17193 Status: Offline Thanks Meter: 16	@b21playa Try to bypass the external antenna connector If not, change antenna switch............

01-26-2004, 16:59	#6 (permalink)
sc0tty Junior Member Join Date: Jan 2004 Age: 48 Posts: 5 Member: 50562 Status: Offline Thanks Meter: 0	Hi Guys, Again similar problem, signal drops after a few mins on a call and doesn't come back for up to 10 mins afterwards. All this antenna replacement, pa(???) stuff is over my head, is this definietly a HW problem or could it be the firmware? Would a Nokia Centre charge much to fix this? Thx

01-26-2004, 22:27	#8 (permalink)
GSM Coolhawk No Life Poster Join Date: Dec 2001 Location: United Arab Emirates, Dubai Age: 52 Posts: 1,269 Member: 7751 Status: Offline Thanks Meter: 74	@MAJESTIC PIRATE Hagar ??? Yeah like StudioGSM says, VERY intereting I would like to see that 6310i, lets say HELGA instead should we. Well for the HELGA I have repaired a few 6310i's by reballing/changing the HELGA, but the most proper cause on 6310i is PA. You have to know that you can actually subsitute this PA for a 3310 PA PFO8109B. Just remember that you will loose 1900 MHZ band. Also check antenna interface, same problem with this as with 6210, the "swicth over" switch which is inside the interafce takes care of external/internal antenna, if the phone have been in dusty places I've seen this get stuck in "external" mode. Hopes this helps Regards

01-27-2004, 10:42	#10 (permalink)
sc0tty Junior Member Join Date: Jan 2004 Age: 48 Posts: 5 Member: 50562 Status: Offline Thanks Meter: 0	Thanks guys, but like I said earlier this stuff is way over my head, looks like I'm gonna have to pay someone to do it. Thanks for verifying that it is a HW issue and not the firmware, which I would have attempted. Cheers