Water soliuton - GSM-Forum

stylius · 03-19-2004, 07:22

Hello, why have soliuton after phone was dead when it dropet into the water?
Very Thanks.

misel · 03-19-2004, 08:15

we learn in school about process named electrolize ,,,current and water making electrolize on phone board and little holes ,also small lines have to be destroyed and completely disapear from PCB,,that's why phones become dead ,,he he ,,,small shool of electronic for beginner

benjaminok · 03-19-2004, 14:13

Drop it in alcohol Isopropanol and leave it there for 24 hours...
Clean afterwards with antistatic brush & alcohol.
Let it dry some hours....and test your phone!

You could of cours also use Ultrasonic & alcohol if you have it!

Regards

leosedf · 03-19-2004, 15:52

Alcohol makes oxidations harder to remove i think. I tryed on many phones and after that nothing could be removed even with an ultrasonic.
Use ultrasonic machine with 50% water 50% thinners (the ones used for paints) if you don't have special cleaning solution.
Then check your hardware for destroyed pcb traces, reflash the phone.
Maybe you need to reflow/reball some chips

maddox · 03-19-2004, 20:00

Iso propanol 99% is the best for water damaged phones.
U can leave it in the alc. for 3-4 days, bruch it a little with an toothbrush.
And put some isopropanol under the uBGA's with a syringe.

Sometimes U need to reflash the phone and sometimes U need to reflow / reball some uBGA's.

leosedf · 03-19-2004, 20:16

then we should throw away our ultrasonic machines

Do you agree??

b0ba · 03-19-2004, 20:23

I know chemistry very well...
It doesn't metter to what alchohol you put your phone...
It depends on 3 things: what substance it was in... battery charge level..
and the last (the most one) ... how long the phone was in substance...

All the rest is depended on board components....

WBR
b0ba

MAJESTIC PIRATE · 03-19-2004, 22:42

just clean your pcb well , reflash it ( advisable ) , rehot it , change what destroyed ......... notice : treatment may deffer at dct3 than dct4 ..

03-19-2004, 07:22	#1 (permalink)
stylius No Life Poster Join Date: Feb 2004 Location: Europe Age: 39 Posts: 1,057 Member: 51989 Status: Offline Sonork: 1575109 Thanks Meter: 145	Water soliuton Hello, why have soliuton after phone was dead when it dropet into the water? Very Thanks.

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03-19-2004, 08:15	#2 (permalink)
misel No Life Poster Join Date: Apr 2000 Location: near you Age: 60 Posts: 560 Member: 1196 Status: Offline Thanks Meter: 6	we learn in school about process named electrolize ,,,current and water making electrolize on phone board and little holes ,also small lines have to be destroyed and completely disapear from PCB,,that's why phones become dead ,,he he ,,,small shool of electronic for beginner

03-19-2004, 14:13	#3 (permalink)
benjaminok Freak Poster Join Date: Oct 2003 Location: Scandinavia Posts: 189 Member: 42160 Status: Offline Thanks Meter: 0	Drop it in alcohol Isopropanol and leave it there for 24 hours... Clean afterwards with antistatic brush & alcohol. Let it dry some hours....and test your phone! You could of cours also use Ultrasonic & alcohol if you have it! Regards

03-19-2004, 15:52	#4 (permalink)
leosedf No Life Poster Join Date: Jul 2003 Location: Thessaloniki,Hellas Age: 44 Posts: 1,013 Member: 33547 Status: Offline Thanks Meter: 17	Alcohol makes oxidations harder to remove i think. I tryed on many phones and after that nothing could be removed even with an ultrasonic. Use ultrasonic machine with 50% water 50% thinners (the ones used for paints) if you don't have special cleaning solution. Then check your hardware for destroyed pcb traces, reflash the phone. Maybe you need to reflow/reball some chips

03-19-2004, 20:00	#5 (permalink)
maddox Junior Member Join Date: Jan 2004 Location: HESSEN Age: 49 Posts: 11 Member: 51014 Status: Offline Thanks Meter: 0	Iso propanol 99% is the best for water damaged phones. U can leave it in the alc. for 3-4 days, bruch it a little with an toothbrush. And put some isopropanol under the uBGA's with a syringe. Sometimes U need to reflash the phone and sometimes U need to reflow / reball some uBGA's.

03-19-2004, 20:16	#6 (permalink)
leosedf No Life Poster Join Date: Jul 2003 Location: Thessaloniki,Hellas Age: 44 Posts: 1,013 Member: 33547 Status: Offline Thanks Meter: 17	then we should throw away our ultrasonic machines Do you agree??

03-19-2004, 20:23	#7 (permalink)
b0ba No Life Poster Join Date: Oct 2001 Location: No route to host. Age: 43 Posts: 895 Member: 6772 Status: Offline Thanks Meter: 17	I know chemistry very well... It doesn't metter to what alchohol you put your phone... It depends on 3 things: what substance it was in... battery charge level.. and the last (the most one) ... how long the phone was in substance... All the rest is depended on board components.... WBR b0ba

03-19-2004, 22:42	#8 (permalink)
MAJESTIC PIRATE Freak Poster Join Date: Dec 2003 Location: E G Y P T Age: 47 Posts: 336 Member: 45635 Status: Offline Thanks Meter: 20	just clean your pcb well , reflash it ( advisable ) , rehot it , change what destroyed ......... notice : treatment may deffer at dct3 than dct4 ..