nokia 3310 capacitor - GSM-Forum

TELE-MEDIA · 03-23-2004, 20:30

I have working (?) nokia 3310 but without big capacitor (525) near PA (left side). Tell me please what is it for? Is it possible that without this capacitor my phone can be damaged or work not quite good (discharging battery, loosing network, etc)? I know I could solder it but problem is there's no track to solder it. Anyone could explain, please?
BR
ZG

Medz · 03-24-2004, 13:50

Look M8..

This capasitor is a 68 u-farad capasity , and it considers as one of the network's sector components.
It is the +ve line ' reservoire ' accross its pathway to the power amplefire IC.
It acts like a current storage unite for pumping current to the power amplefire during sending signal activtys , that secures current to the rest of the phone.
According to the condition of the phone and the battery , no problem to ignore it . But as the curve goes down the need to it increased.

Regards
Br

TELE-MEDIA · 03-24-2004, 20:17

Thank you for explain Medz, you are very helpfull. But I have one question-where preciously connect capasitor + to PA (which point)? Thanks in advance.
BR
ZG

Medz · 03-24-2004, 23:12

By the use of a mutimeter , sellect beeper and check the contenuety between +ve line to the PA ,There are 2 points ( 4,5 if U start counting anticlockwise from the black triangle ) at the midle side toward the Ant-Sw , They'r connected to a 2 small caps too.

mujie · 03-25-2004, 07:32

Here is the pic

TELE-MEDIA · 03-25-2004, 22:58

Thank you, I've made it.
Best Regards
ZG

03-23-2004, 20:30	#1 (permalink)
TELE-MEDIA Freak Poster Join Date: Sep 2003 Location: Warsaw, Poland Age: 54 Posts: 272 Member: 38755 Status: Offline Thanks Meter: 3	nokia 3310 capacitor I have working (?) nokia 3310 but without big capacitor (525) near PA (left side). Tell me please what is it for? Is it possible that without this capacitor my phone can be damaged or work not quite good (discharging battery, loosing network, etc)? I know I could solder it but problem is there's no track to solder it. Anyone could explain, please? BR ZG

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03-24-2004, 13:50	#2 (permalink)
Medz No Life Poster Join Date: Sep 2003 Age: 66 Posts: 807 Member: 39601 Status: Offline Thanks Meter: 13	Look M8.. This capasitor is a 68 u-farad capasity , and it considers as one of the network's sector components. It is the +ve line ' reservoire ' accross its pathway to the power amplefire IC. It acts like a current storage unite for pumping current to the power amplefire during sending signal activtys , that secures current to the rest of the phone. According to the condition of the phone and the battery , no problem to ignore it . But as the curve goes down the need to it increased. Regards Br

03-24-2004, 20:17	#3 (permalink)
TELE-MEDIA Freak Poster Join Date: Sep 2003 Location: Warsaw, Poland Age: 54 Posts: 272 Member: 38755 Status: Offline Thanks Meter: 3	Thank you for explain Medz, you are very helpfull. But I have one question-where preciously connect capasitor + to PA (which point)? Thanks in advance. BR ZG

03-24-2004, 23:12	#4 (permalink)
Medz No Life Poster Join Date: Sep 2003 Age: 66 Posts: 807 Member: 39601 Status: Offline Thanks Meter: 13	By the use of a mutimeter , sellect beeper and check the contenuety between +ve line to the PA ,There are 2 points ( 4,5 if U start counting anticlockwise from the black triangle ) at the midle side toward the Ant-Sw , They'r connected to a 2 small caps too.

03-25-2004, 22:58	#6 (permalink)
TELE-MEDIA Freak Poster Join Date: Sep 2003 Location: Warsaw, Poland Age: 54 Posts: 272 Member: 38755 Status: Offline Thanks Meter: 3	Thank you, I've made it. Best Regards ZG