8310 vibrate but no ring ( no ringer , no ringtone) and not software problem - GSM-Forum

gsmnice · 05-15-2004, 18:42

Hi,

I have a 8310 with strange problem.
I have seen a lot of post with that, but me it s not software problem cause I upgrade it with last version (6.20) and my phone vibrate.
If any idea your welcome

Burnt Cobba · 05-17-2004, 23:19

from here it is hard to help since we dont have the phone at hand.

Try to get anothe good one and compare the main contacts and follow back using a multimeter. Can take you sometime to arrive at the problem but that is troubleshooting

However i presume that you have either a broken track or else something near or problem with UEM itself since this one contains the beloved Cobba now.

g luck mate
al

gjurobrod · 05-18-2004, 10:12

And you could test buzzer first,just take 5V battery and connect it on + and -
on buzzer.So if you hear any sound,it´s ok and you have to check other components and tracks between them(you can do it easily if you have service manuals).

NeXuSGTS · 05-18-2004, 19:19

Does your phone display a headset on the screen sometimes?

Medz · 05-18-2004, 20:41

Quote:

Originally Posted by gjurobrod

And you could test buzzer first,just take 5V battery and connect it on + and -
on buzzer.So if you hear any sound,it´s ok and you have to check other components and tracks between them(you can do it easily if you have service manuals).

@gjurobord...

A 5 Volts onboard !!! , it is very risky man . the components of the mobile phones are CMOS construction , the unit volt level here is 1,8 volt appliying a 5volts on board is very risky and it may dammage any thing on it specialy the UEM ( the power manegment device ).

By the use of a multimeter on a resistance meter U can mesure the resistance of the buzzer ( around 16 Ohm ) , as U see so simple

BestLuck
Br

Burnt Cobba · 05-18-2004, 21:37

@ gsmnice

1. First try to follow the service manual mate. Preferabbly do use the proper tools else it will be harder.

2. If not possible try comapre to another good board.

NEVER EVER try heating the board or applying voltages at random unless you are 100% sure what you are doing. Phones are delicate and a careless move can mean a dead set of chips and not worthwhile to fix.

g luck
al

gjurobrod · 05-19-2004, 16:25

Yeah,5V can be heavy for phone but till now I had no problems with that.
I´m doing it only when i suspect on water damage or if someone has already repaired phone and haven´t cleaned the board properlly(buzzer can be glued with rests of flux or oxidated) and you can´t see that and the resistance can still be correct,isn´t it?

05-15-2004, 18:42	#1 (permalink)
gsmnice No Life Poster Join Date: Mar 2002 Age: 46 Posts: 573 Member: 10483 Status: Offline Thanks Meter: 23	8310 vibrate but no ring ( no ringer , no ringtone) and not software problem Hi, I have a 8310 with strange problem. I have seen a lot of post with that, but me it s not software problem cause I upgrade it with last version (6.20) and my phone vibrate. If any idea your welcome

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05-17-2004, 23:19	#2 (permalink)
Burnt Cobba No Life Poster Join Date: Apr 2002 Location: The Green Mile Posts: 3,653 Member: 11325 Status: Offline Thanks Meter: 266	from here it is hard to help since we dont have the phone at hand. Try to get anothe good one and compare the main contacts and follow back using a multimeter. Can take you sometime to arrive at the problem but that is troubleshooting However i presume that you have either a broken track or else something near or problem with UEM itself since this one contains the beloved Cobba now. g luck mate al

05-18-2004, 10:12	#3 (permalink)
gjurobrod No Life Poster Join Date: Dec 2003 Location: Wien,Austria Posts: 906 Member: 45985 Status: Offline Thanks Meter: 96	And you could test buzzer first,just take 5V battery and connect it on + and - on buzzer.So if you hear any sound,it´s ok and you have to check other components and tracks between them(you can do it easily if you have service manuals).

05-18-2004, 19:19	#4 (permalink)
NeXuSGTS Freak Poster Join Date: Nov 2003 Location: The upper limit Age: 40 Posts: 352 Member: 44552 Status: Offline Thanks Meter: 3	Does your phone display a headset on the screen sometimes?

05-18-2004, 21:37	#6 (permalink)
Burnt Cobba No Life Poster Join Date: Apr 2002 Location: The Green Mile Posts: 3,653 Member: 11325 Status: Offline Thanks Meter: 266	@ gsmnice 1. First try to follow the service manual mate. Preferabbly do use the proper tools else it will be harder. 2. If not possible try comapre to another good board. NEVER EVER try heating the board or applying voltages at random unless you are 100% sure what you are doing. Phones are delicate and a careless move can mean a dead set of chips and not worthwhile to fix. g luck al

05-19-2004, 16:25	#7 (permalink)
gjurobrod No Life Poster Join Date: Dec 2003 Location: Wien,Austria Posts: 906 Member: 45985 Status: Offline Thanks Meter: 96	Yeah,5V can be heavy for phone but till now I had no problems with that. I´m doing it only when i suspect on water damage or if someone has already repaired phone and haven´t cleaned the board properlly(buzzer can be glued with rests of flux or oxidated) and you can´t see that and the resistance can still be correct,isn´t it?