7110 show charging without charger - GSM-Forum

MaRiN · 11-19-2003, 02:59

I have 7110 wich show charging without charger, and when I connect charger, charging bars disappear and phone don't charge.

Does anybady knows solution for this problem?

Renda · 11-19-2003, 13:15

look for water damage near charging connector. If not remove charging IC and try it if it shows again charging, if not replace it. Next you can reflow ccont(if you see oxid near ccont). This problem is mainly caused by some short circuit on system board. It could be also resistor or capacitor, but it will be 100% near charging IC, try to find some oxid damage.

issac@mobi · 11-19-2003, 19:28

first try on charging connector ,if cant reflow charging ic or ccont still cant try to charging ic or ccont g luck

MaRiN · 11-20-2003, 01:31

I reflowed whole pcb and when charger is connected on phone without battery I measured voltages on all pins of charging IC and all values are the same like on working phone. I think it is not charging ICproblem

Medz · 11-20-2003, 02:08

1st clean the board carefully , also check the charging limit control
pin( the 3rd in the charging socket) .
Check resistors(R103=47k & R104=4k7),they'r voltage deviders
carying voltage of charging to ccont, also check (R102=0.22ohm),
It is the charging current sensor.
If all is not OK try to reflow the ccont for power meter pin and also
the cobba for charging limit data control pin.

And Good luck Br.

Renda · 11-20-2003, 11:00

And what about the voltage value on charging pin on connector? When you remove charger is it dropping down? I had this problem on 6210, but I can not remember the solution.

P.S. do fullflash (MCU+PPM+EEPROM) + factory set (If you can set back contrast), just do it for sure

MaRiN · 11-21-2003, 02:28

Problem solved ! Thank you guys!
It was R103 fault.

nkakanou · 02-28-2006, 16:53

My problem is that , when i put the charger , i can see the phone to charge , but after 3 hours , the battery is empty . Please help me with a diagramm.

11-19-2003, 02:59	#1 (permalink)
MaRiN Freak Poster Join Date: Nov 2000 Location: Croatia Age: 47 Posts: 353 Member: 2466 Status: Offline Thanks Meter: 10	7110 show charging without charger I have 7110 wich show charging without charger, and when I connect charger, charging bars disappear and phone don't charge. Does anybady knows solution for this problem?

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11-19-2003, 13:15	#2 (permalink)
Renda Major Poster Join Date: Dec 1999 Location: Prague Posts: 44 Member: 764 Status: Offline Thanks Meter: 0	look for water damage near charging connector. If not remove charging IC and try it if it shows again charging, if not replace it. Next you can reflow ccont(if you see oxid near ccont). This problem is mainly caused by some short circuit on system board. It could be also resistor or capacitor, but it will be 100% near charging IC, try to find some oxid damage.

11-19-2003, 19:28	#3 (permalink)
issac@mobi Insane Poster Join Date: Nov 2003 Posts: 74 Member: 44386 Status: Offline Thanks Meter: 0	first try on charging connector ,if cant reflow charging ic or ccont still cant try to charging ic or ccont g luck

11-20-2003, 01:31	#4 (permalink)
MaRiN Freak Poster Join Date: Nov 2000 Location: Croatia Age: 47 Posts: 353 Member: 2466 Status: Offline Thanks Meter: 10	I reflowed whole pcb and when charger is connected on phone without battery I measured voltages on all pins of charging IC and all values are the same like on working phone. I think it is not charging ICproblem

11-20-2003, 02:08	#5 (permalink)
Medz No Life Poster Join Date: Sep 2003 Age: 66 Posts: 807 Member: 39601 Status: Offline Thanks Meter: 13	1st clean the board carefully , also check the charging limit control pin( the 3rd in the charging socket) . Check resistors(R103=47k & R104=4k7),they'r voltage deviders carying voltage of charging to ccont, also check (R102=0.22ohm), It is the charging current sensor. If all is not OK try to reflow the ccont for power meter pin and also the cobba for charging limit data control pin. And Good luck Br.

11-20-2003, 11:00	#6 (permalink)
Renda Major Poster Join Date: Dec 1999 Location: Prague Posts: 44 Member: 764 Status: Offline Thanks Meter: 0	And what about the voltage value on charging pin on connector? When you remove charger is it dropping down? I had this problem on 6210, but I can not remember the solution. P.S. do fullflash (MCU+PPM+EEPROM) + factory set (If you can set back contrast), just do it for sure

11-21-2003, 02:28	#7 (permalink)
MaRiN Freak Poster Join Date: Nov 2000 Location: Croatia Age: 47 Posts: 353 Member: 2466 Status: Offline Thanks Meter: 10	Problem solved ! Thank you guys! It was R103 fault.

02-28-2006, 16:53	#8 (permalink)
nkakanou Freak Poster Join Date: Aug 2005 Age: 48 Posts: 167 Member: 174340 Status: Offline Thanks Meter: 10	My problem is that , when i put the charger , i can see the phone to charge , but after 3 hours , the battery is empty . Please help me with a diagramm.