Water damaged - GSM-Forum

Black-Axe · 06-13-2002, 14:40

I've got a phone that fell in water accidentally and now its dead, as in, it won't come on, can anyone tell me how to fix it?

Moc · 06-14-2002, 03:15

First you have to rehot with hot air solder and try .....

Rgds

rakhpai · 06-14-2002, 03:17

I cannot tell you how to fix it,but i can tell you how you can try to!
If it's a lot of oxidation on it put the mainboard in a recipient full of alcohol 90%,Leave it there for a day and after that try to power on again!
Sometimes it works!

Regards

Scaramouche · 06-14-2002, 09:38

Try using an ultrasonic cleaner, that get rids of corrosion. Also Trichloroethene is an excellent cleaner commonly known as car brake cleaner.

andrews · 06-15-2002, 14:49

I clean pcb with ulrasonic cleaner, use Isopropyl Alcohol.

But after that pcb all contacts I find with withe oxidation?!
Give me please dirrection where I can get Trichloroethene Cleaner.

Best Regards

Andrews

epic · 06-16-2002, 17:30

Hi,

I have an 8250 fell in water, then I immerse it in Ultrasonic solution for 1 hour then let it dry thoroughly.. then next day i power it on, it's working but easily drain battery and the unit is hot, so I suspect Power AMp IC has defect, so I replace it but still not functioning properly and no signal... i tried to Flash new MCU+PPM but gave me "FLASH ID UNKNOWN : 2656F209 ERROR:
WHAT IS WRONG??? Thnaks to those who can help....

BR,
Epic

nicos · 06-16-2002, 21:13

Quote:

Originally posted by epic
Hi,

hot, so I suspect Power AMp IC has defect, so I replace it but still not functioning properly and no signal... i tried to Flash new MCU+PPM but gave me "FLASH ID UNKNOWN : 2656F209 ERROR:
WHAT IS WRONG??? Thnaks to those who can help....

BR,
Epic

Before flashing try to heat cobba but just 10-15 sec (max. 20 sec.), maybe it will help you (i try it and few times it works for me). Be carefull not to kill cobba. I heat it first few seconds from up side, then from downside (keyboard side).
If that don't help try the same with flash chip.
If that don't help then maybe you will must to desolder cobba, make new balls and solder it again. But then there is always chance to kill cobba.

Regards,

Nicos

Scaramouche · 06-17-2002, 08:23

Trichloroethane is found in car brake cleaner. Go to your local petrol station and buy a spray can, just be careful, its poisonous. It clears out corrosion pretty well.

If its getting hot, you probably have a short somewhere, that would also explain the quick drain on your battery. Check the current drain using a multimeter.

SHANKYgavri · 05-13-2009, 13:59

firstly wash with acid tone and rehot it, if it is not working then rehot the main is power,cpu and flash ic 1by1

06-13-2002, 14:40	#1 (permalink)
Black-Axe Freak Poster Join Date: Jun 2002 Location: North Pole Posts: 181 Member: 12869 Status: Offline Thanks Meter: 3	Water damaged I've got a phone that fell in water accidentally and now its dead, as in, it won't come on, can anyone tell me how to fix it?

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06-14-2002, 03:15	#2 (permalink)
Moc Freak Poster Join Date: Sep 2001 Location: Lisbon Posts: 173 Member: 6099 Status: Offline Thanks Meter: 1	First you have to rehot with hot air solder and try ..... Rgds

06-14-2002, 03:17	#3 (permalink)
rakhpai Freak Poster Join Date: May 2002 Location: FRANCE Age: 46 Posts: 188 Member: 11779 Status: Offline Thanks Meter: 0	I cannot tell you how to fix it,but i can tell you how you can try to! If it's a lot of oxidation on it put the mainboard in a recipient full of alcohol 90%,Leave it there for a day and after that try to power on again! Sometimes it works! Regards

06-14-2002, 09:38	#4 (permalink)
Scaramouche Freak Poster Join Date: May 2002 Location: Perth, Western Australia Age: 45 Posts: 313 Member: 11937 Status: Offline Thanks Meter: 1	Try using an ultrasonic cleaner, that get rids of corrosion. Also Trichloroethene is an excellent cleaner commonly known as car brake cleaner.

06-15-2002, 14:49	#5 (permalink)
andrews Freak Poster Join Date: Mar 2002 Location: Ireland Age: 54 Posts: 319 Member: 10516 Status: Offline Thanks Meter: 1	I clean pcb with ulrasonic cleaner, use Isopropyl Alcohol. But after that pcb all contacts I find with withe oxidation?! Give me please dirrection where I can get Trichloroethene Cleaner. Best Regards Andrews

06-16-2002, 17:30	#6 (permalink)
epic No Life Poster Join Date: Apr 2002 Location: Tutuban Age: 68 Posts: 1,359 Member: 10635 Status: Offline Thanks Meter: 10	Hi, I have an 8250 fell in water, then I immerse it in Ultrasonic solution for 1 hour then let it dry thoroughly.. then next day i power it on, it's working but easily drain battery and the unit is hot, so I suspect Power AMp IC has defect, so I replace it but still not functioning properly and no signal... i tried to Flash new MCU+PPM but gave me "FLASH ID UNKNOWN : 2656F209 ERROR: WHAT IS WRONG??? Thnaks to those who can help.... BR, Epic

06-17-2002, 08:23	#8 (permalink)
Scaramouche Freak Poster Join Date: May 2002 Location: Perth, Western Australia Age: 45 Posts: 313 Member: 11937 Status: Offline Thanks Meter: 1	Trichloroethane is found in car brake cleaner. Go to your local petrol station and buy a spray can, just be careful, its poisonous. It clears out corrosion pretty well. If its getting hot, you probably have a short somewhere, that would also explain the quick drain on your battery. Check the current drain using a multimeter.

05-13-2009, 13:59	#9 (permalink)
SHANKYgavri Junior Member Join Date: Jun 2007 Posts: 7 Member: 532221 Status: Offline Thanks Meter: 0	firstly wash with acid tone and rehot it, if it is not working then rehot the main is power,cpu and flash ic 1by1