6230 short circuit on battery terminals

[geoffcool]

6230 is dead when i put the volt meter on positive and negitive on the battery terminals their seems to be a short circuit has anyone have a solution or what the fault might be.

thanks geoff

ps not been water damaged clean as a babies bottom

[knight rider]

hey man change PA this is the first step,post me result

[geoffcool]

how can the PA cause a short on the battery terminal anyway i will try tomorrow and let you know the outcome cheers

[GSM_LORD]

look honey
PA takes power directly from battery. so if it is shorted u will have a short circuit on the bat conn

[geoffcool]

still a short on battery terminals its doing my head in

[Dave.W]

sory geoff, i have seen a few phones with short on terminals. i did not revive one phone.

it is very hard to fault find this as all ground and positive points in the phone is showing continuity so you cannot find the problem...

i read in an old post when i searched for this problem, and see the big capacitors near contact might be the problem.

for me that did not solve, but for you it might

[geoffcool]

can u please let me know which capacitor it is please

cheers

[Dave.W]

like i said:

when i searched (so if unsure you sould have searched)
also i said the big one (there is only one big capacitor in 6230, only two big capacitors in other phone)
finally i say, near the contacts.

it is to the right of the battery contacts, it is big and yellow.

[naughtycell]

He will need to raise much components to reach , dont forget N120 ( Zocus current sensor ) too .

[MBtech]

Use power suplay, 3.7V (+ with Vbat & - with GND)
Component dammaged will be very hot
(But becareful dont use hight signals).

Good luck.
MBtech.

[Dave.W]

ahh that is a good thinking mbtech, i like your way

but short could also be on internal tracks in board

[geoffcool]

just to let you guys know i have removed every single component from the PCB and only left is the battery terminals and their is still a short on the battery terminals i have decided to send the PCB with all components in a bag to nokia and see what the have to say!!!


thanks for your help guys

[naughtycell]

Maximum , even with shorted tracking (as Dave) ,they will say : Faullty Pcb !!
and nothing more .

[elabasimlock]

Originally Posted by naughtycell

Maximum , even with shorted tracking (as Dave) ,they will say : Faullty Pcb !!
and nothing more .

95% problem of chip PA

[naughtycell]

Originally Posted by elabasimlock

95% problem of chip PA

Yes but the guy said that he removes every part from the board and left it clear !.
The outher common causes are the Varistors ,diods , and any capacetiv load device .
The continous heatening of those devices carbonates the board under them leading to loss of insulation between tracks of the board and hot gun maxemises the problem
That happends in some seimens phones I replaced the PA then , phone dead during charging.

BR