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Go Back   GSM-Forum > GSM & CDMA Phones / Tablets Software & Hardware Area > Motorola > Motorola Hardware Repair

Motorola Hardware Repair here all threads Related to Motorola Hardware Servicing and Repairing.

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Old 01-31-2009, 16:07   #1 (permalink)
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Motorola v360 power problem

I received a moto v360. It was not powering on and the owner doesnt know what happened. i saw some mud on the main board so i washed it in spirit. after drying it, it powered on but after switching off and puttin on charger, the phone will not power on. So i heated the component on the board for a few minutes, i tried powering on and it could power on, after putting on usb cable on pc and switching off, the phone will not power on after pressing power button. I left the phone alone for 1 day, i tried pressing power button and it worked, after switch off, on, off, on, off, then it again fails to power on. What could be causing this problem?
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Old 02-01-2009, 09:25   #2 (permalink)
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may be the processor my friend.try to reheat it slowly.
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Old 02-01-2009, 13:05   #3 (permalink)
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i have already done that several times, but i still have this problem
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Old 02-01-2009, 22:23   #4 (permalink)
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I think the owner dropped it in the puddle of mud.

Forget about the spirit and alcohol, when you suspect a water damage use "JELT".
(it removes oxidizers better then spirit but more expensive).
If you suspect the phone was in the water, put it in alcohol (If you don't have Jelt or other anti-oxidizer).
And then reheat the entire PCB with Steinel-like heat gun and lot's of flux.

350C if it's lead-free, or 290 if it's leaded tin.

****WARNING!!!! Do not heat with steinel glued BGA's!!!*****

For me this technique fixes 70-80% of water damaged phones.
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Old 02-02-2009, 01:25   #5 (permalink)
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i agree, put some flux and heat it.
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Old 02-04-2009, 10:17   #6 (permalink)
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Thanks guy, i fixed the phone and its working fine..bt now i have messed the signal...the phone is showing signal but it cant make calls..i have tried flashing but still the same problem...sometimes the signal is showing but sometimes its going off...what component should i fix now? please assist with pictures
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Old 02-04-2009, 10:36   #7 (permalink)
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[quote=Hells_Angel443;4117508]

****WARNING!!!! Do not heat with steinel glued BGA's!!!*****

quote]

bro what does this mean? and what happens if you heat glued BGA
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