Many Samsung Phones Damaged By Hi Voltage While Charging Solution - GSM-Forum

dannyogolo · 10-11-2003, 11:28

In the past week alone, I receive up tp 10 pcs of various Samsung phones
with either of this fault: EITHER dead by too much voltage while charging
OR even though the charging indicator is moving, It still does not charge.
Now I know that definetely, the over voltage has damaged a component on the PCB; So I want to know which components are damaged as follows:

1. When the phone is completely dead, which components were killed?

2. When the phone is still alive, but does not take charge anymore, although the charging indicator is moving when charger is connected, which components do I change ?

Thanks in advance.

dannyogolo

Chuk · 10-11-2003, 12:25

LTC1734ES6 (TRG on element) - 6 legs - 1 and 3 shorted - no charge, but indicator show charging

Transistor 2SB1427 (P20D on element) - 6 legs (R210), 3 legs (N620) - short - no power up

Capacitor 10 UF 10 V - burned

Mostly LTC1734ES6 dead

dannyogolo · 10-11-2003, 16:55

That is good news,
Man Chuk,
Even if I have not tried them out, the way you say them, you seem to know what you are saying. I wish they work.

Thanks anyway.

dannyogolo

shiljo · 10-13-2003, 09:59

Quote:

Originally posted by Chuk
LTC1734ES6 (TRG on element) - 6 legs - 1 and 3 shorted - no charge, but indicator show charging

Transistor 2SB1427 (P20D on element) - 6 legs (R210), 3 legs (N620) - short - no power up

Capacitor 10 UF 10 V - burned

Mostly LTC1734ES6 dead

Yes,exactly like that

But,I have problems to find replacements,do know where (on which phone except samsung) to find it?
Thanks
Regards

mujie · 10-13-2003, 13:29

Quote:

Originally posted by Chuk
LTC1734ES6 (TRG on element) - 6 legs - 1 and 3 shorted - no charge, but indicator show charging

Transistor 2SB1427 (P20D on element) - 6 legs (R210), 3 legs (N620) - short - no power up

Capacitor 10 UF 10 V - burned

Mostly LTC1734ES6 dead

IN MANY CASES THIS FAULT OCCURS ON T100 AND R2XX BUT "TRG CHIP" REPLACEMENT DOESN'T ALWAYS WORK,EVEN AFTER REPLACE WITH GOOD ONE.I HAD ONE R220 WITH THIS FAULT,I REPLACE ALMOST ENTIRE CHARGING CIRCUIT BUT CURRENT CONSUMPTION IS TOO HIGH ON CAP 10uF 10V.EVEN WHEN REPLACE WITH HIGHER CAP.

COMPAQ · 11-15-2003, 13:57

nice guys helped me a lot

Chuk · 11-15-2003, 15:19

One correction: LTRG 1 and 3 must be short. If not - result show charging, but not charge.
Other damages of LTRG and P20D - no power off, no charging, charging without charger (phone warm)

Ofcourse in some cases not only LTRG and P20D damaged. Reason of uprated current consumption can be PA, CPU, capacitors and other parts which use Vbat directly.

DrMobile · 11-15-2003, 18:19

Quote:

Originally posted by Chuk
LTC1734ES6 (TRG on element) - 6 legs - 1 and 3 shorted - no charge, but indicator show charging

Transistor 2SB1427 (P20D on element) - 6 legs (R210), 3 legs (N620) - short - no power up

Capacitor 10 UF 10 V - burned

Mostly LTC1734ES6 dead

@CHUK..
u r 100@ right.. I also repair everyday lot of SAMSUNG R220, N620 and T100 for the above solutions..

But I have one problem and don't found a solution.. I received many V200 from diffrent customers thay become dead.. and its CPU get heat up... can u tell me where maybe the problem.. or we have to replace CPU.
its seem common problem.. becaise I received many but we can;t repair it.

Best Regards,
Wahab

Madxim · 11-24-2003, 10:14

The sometime reason of this failures is using by customer a charger from LG phones which have the same connector, as result in good case we have damaged protection part in bad case we have damaged CPU

Chuk · 11-24-2003, 12:13

To DrMobile:

I don't have V200 with such ptoblem yet, but I see C100 with same problem - CPU very hot and current consumption more than 1.5 A . I think that CPU damaged.

hoangminhtam · 02-02-2004, 12:16

sensor chip with hands
replace any hot one !
on c100 n v200 with such problm. as you mention surely 100% cpu prblm.!
good luck!

ekene · 02-10-2004, 21:10

Hi,
it is junior i just to know whethr there is any formular manualy to reset
1.wap
2.unpresidetal display
3.any setting at all.

ahkhoo76 · 02-17-2004, 13:24

Hi!All the forum members,Need advice from u guys,S300 consume power when turn on test it using power supply.No experience in repairing this phone,a friend of mine said it might be cap leakage,please advice.Thanks in advance.

Ayush · 07-02-2004, 01:16

HI All
Whatever the problem is but i didnt got a solution to myself.
My bro connected Lg Charger to the phone and it went dead withing 10sec and also the phone went hot.
Later he connected the original samsung charger, and than again the phone got heated uo. After that when i connected the charger nothing happened.
When i opened the phone, and after a lot of moving here and there stuffs i found the cpu to be short, but dont have any spare of it to replace.
Never though a mere charger could be such a panic.
regards
Ayush

*** NEVER USE OTHER PHONE STUFFS FOR YOUR PHONES ***

GSM SNIPER · 07-02-2004, 11:50

Quote:

Originally Posted by Chuk

LTC1734ES6 (TRG on element) - 6 legs - 1 and 3 shorted - no charge, but indicator show charging

Transistor 2SB1427 (P20D on element) - 6 legs (R210), 3 legs (N620) - short - no power up

Capacitor 10 UF 10 V - burned

Mostly LTC1734ES6 dead

I have a V200 Dead after using bad charger !
I changed the MTRG P20D and make this shurt circuit gave by alex123

but no Thing !!

When I push the power on button The Pwer supply make the indicator to 0.4 watt and V3.7V But doesn't power on ?

what can be the solut please ?

10-11-2003, 11:28	#1 (permalink)
dannyogolo No Life Poster Join Date: Nov 2002 Location: Nigeria Posts: 2,980 Member: 18200 Status: Offline Sonork: 100.1608286 Thanks Meter: 82	Many Samsung Phones Damaged By Hi Voltage While Charging Solution In the past week alone, I receive up tp 10 pcs of various Samsung phones with either of this fault: EITHER dead by too much voltage while charging OR even though the charging indicator is moving, It still does not charge. Now I know that definetely, the over voltage has damaged a component on the PCB; So I want to know which components are damaged as follows: 1. When the phone is completely dead, which components were killed? 2. When the phone is still alive, but does not take charge anymore, although the charging indicator is moving when charger is connected, which components do I change ? Thanks in advance. dannyogolo

02-10-2004, 21:10	#12 (permalink)
ekene Junior Member Join Date: Oct 2003 Posts: 3 Member: 40686 Status: Offline Thanks Meter: 0	Samsung Reboot Fomular Hi, it is junior i just to know whethr there is any formular manualy to reset 1.wap 2.unpresidetal display 3.any setting at all.

02-17-2004, 13:24	#13 (permalink)
ahkhoo76 Insane Poster Join Date: Jul 2003 Posts: 88 Member: 33029 Status: Offline Thanks Meter: 9	S300 consume power Hi!All the forum members,Need advice from u guys,S300 consume power when turn on test it using power supply.No experience in repairing this phone,a friend of mine said it might be cap leakage,please advice.Thanks in advance.

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10-11-2003, 12:25	#2 (permalink)
Chuk No Life Poster Join Date: Dec 2001 Location: Ukraine Age: 46 Posts: 1,146 Member: 7767 Status: Offline Thanks Meter: 3	LTC1734ES6 (TRG on element) - 6 legs - 1 and 3 shorted - no charge, but indicator show charging Transistor 2SB1427 (P20D on element) - 6 legs (R210), 3 legs (N620) - short - no power up Capacitor 10 UF 10 V - burned Mostly LTC1734ES6 dead

10-11-2003, 16:55	#3 (permalink)
dannyogolo No Life Poster Join Date: Nov 2002 Location: Nigeria Posts: 2,980 Member: 18200 Status: Offline Sonork: 100.1608286 Thanks Meter: 82	That is good news, Man Chuk, Even if I have not tried them out, the way you say them, you seem to know what you are saying. I wish they work. Thanks anyway. dannyogolo

11-15-2003, 13:57	#6 (permalink)
COMPAQ No Life Poster Join Date: Dec 2002 Location: INDIA Age: 45 Posts: 528 Member: 18462 Status: Offline Thanks Meter: 30	nice guys helped me a lot

11-15-2003, 15:19	#7 (permalink)
Chuk No Life Poster Join Date: Dec 2001 Location: Ukraine Age: 46 Posts: 1,146 Member: 7767 Status: Offline Thanks Meter: 3	One correction: LTRG 1 and 3 must be short. If not - result show charging, but not charge. Other damages of LTRG and P20D - no power off, no charging, charging without charger (phone warm) Ofcourse in some cases not only LTRG and P20D damaged. Reason of uprated current consumption can be PA, CPU, capacitors and other parts which use Vbat directly.

11-24-2003, 10:14	#9 (permalink)
Madxim Insane Poster Join Date: Jan 2001 Location: Latvia Age: 52 Posts: 88 Member: 3022 Status: Offline Thanks Meter: 1	The sometime reason of this failures is using by customer a charger from LG phones which have the same connector, as result in good case we have damaged protection part in bad case we have damaged CPU

11-24-2003, 12:13	#10 (permalink)
Chuk No Life Poster Join Date: Dec 2001 Location: Ukraine Age: 46 Posts: 1,146 Member: 7767 Status: Offline Thanks Meter: 3	To DrMobile: I don't have V200 with such ptoblem yet, but I see C100 with same problem - CPU very hot and current consumption more than 1.5 A . I think that CPU damaged.

02-02-2004, 12:16	#11 (permalink)
hoangminhtam Freak Poster Join Date: Jun 2003 Location: somewhere Age: 53 Posts: 308 Member: 32182 Status: Offline Thanks Meter: 2	sensor chip with hands replace any hot one ! on c100 n v200 with such problm. as you mention surely 100% cpu prblm.! good luck!

07-02-2004, 01:16	#14 (permalink)
Ayush Freak Poster Join Date: Dec 2002 Age: 39 Posts: 292 Member: 18577 Status: Offline Thanks Meter: 4	HI All Whatever the problem is but i didnt got a solution to myself. My bro connected Lg Charger to the phone and it went dead withing 10sec and also the phone went hot. Later he connected the original samsung charger, and than again the phone got heated uo. After that when i connected the charger nothing happened. When i opened the phone, and after a lot of moving here and there stuffs i found the cpu to be short, but dont have any spare of it to replace. Never though a mere charger could be such a panic. regards Ayush * NEVER USE OTHER PHONE STUFFS FOR YOUR PHONES *