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[Q] Will not boot, flickers quickly

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tonglebeak
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Default [Q] Will not boot, flickers quickly

Hello. My wife recently dropped her S2, with enough force to eject the battery. It had worked after she put it back in and all, and even called me to tell me about it. However, the battery ended up dying before she plugged in it. When plugging the phone into usb, the button lights would flicker and the battery charging icon would flash on for about a second. Rinse and repeat. If there is no battery in the phone, it just flickers the buttons, and the screen will flicker back, and just do it over and over.

The USB port on it was already really shoddy, so I bought a new ribbon and replaced it. Same symptoms. Pretty sure this is a hardware problem, although what the problem is exactly I do not know. I've already reseated all of the ribbon connections I could find. There's obvious signs of previous water damage, but it looks like very old damage. I wouldnt' be surprised if something is corroded, but the timing of this happening after it was dropped makes me think something else came loose. I just don't know what. I could potentially try to reflow the motherboard with my heat gun, but before I waste my time doing that, I was wondering if there's _anything_ else that could be causing these symptoms.

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creepyncrawly
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Over the 2-1/2+ years I have been reading this forum, I have seen a number of cases reported where the battery discharges fully and then will not recharge in the phone, while the phone exhibits symptoms similar to the ones you report. As far as I can remember, in every case the phone would boot up when a fully charged battery was inserted. And once the battery was charged, phone would then recharge the battery as long as it was not completely discharged. Not all phones behave this way. For instance, I have fully discharged my phone on several occasions without issue.

Therefore, I would first try inserting a fully charged battery to see if the phone boots up ok, and see if it will charge with a partially charged battery. Some have had to buy an external charger just for this purpose, or borrow a charged battery from another phone, etc.
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tonglebeak
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Quote:
Originally Posted by creepyncrawly View Post
Over the 2-1/2+ years I have been reading this forum, I have seen a number of cases reported where the battery discharges fully and then will not recharge in the phone, while the phone exhibits symptoms similar to the ones you report. As far as I can remember, in every case the phone would boot up when a fully charged battery was inserted. And once the battery was charged, phone would then recharge the battery as long as it was not completely discharged. Not all phones behave this way. For instance, I have fully discharged my phone on several occasions without issue.

Therefore, I would first try inserting a fully charged battery to see if the phone boots up ok, and see if it will charge with a partially charged battery. Some have had to buy an external charger just for this purpose, or borrow a charged battery from another phone, etc.
Thanks for the detailed reply. I will try to find a battery. I do have a question though. If the battery was the cause of this, should the phone not act like this if the battery was not inserted? I would expect it to boot up just fine with the wall charger plugged into it without the battery in it, but that does the same thing (minus the battery icon).

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creepyncrawly
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I'm just not sure the answer to that. I can't remember if anyone mentioned that, although as I think about it, it seems like someone mentioned that as well. Still, I think this should be the first step in trouble shooting, because if this is the issue, and the phone is otherwise fine, then you don't want to be using a heat gun on it, or any other more difficult steps until you have eliminated this possibility.

Also, you might consider sending the phone out for repair if this step does not solve the issue. Assuming you are in the USA, Mobile Tech Videos is a very reputable shop that can deal with many issues.
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tonglebeak
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(Last edited by tonglebeak; 13th June 2014 at 11:54 PM.)
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You may be correct on this. The battery won't even charge through the external charger (my atrix battery charges fine on it so the charger is good). New battery (even though this is new) it is.

Update: The pins on the battery were labeled wrong. The label wasn't placed in teh correct position. I looked up a pic of another battery and found the label was offset by 1 pin, so I offset the charging pins by 1 and bam, it started charging. 50% charge, popped in the battery, and boom, booted right up.

Thanks creepycrawler!
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