[Nexus 7 Q&A, Help & Troubleshooting] Azure Dragon:
Okay so, this story is going to be really long and somewhat complicated. I'm hoping that someone kind enough will really read the whole story and shed light in the situation.

It all started when I was holding my MicroUSB cable and it hit a (moving) fan. I immediately got it out though it had some scratches. I went to check if it's still working, and it is. Later on, about a few weeks after, I noticed that my Nexus 7 is no longer charging. I tried adjusting it & positioning the cable and the tablet so it will charge, and fortunately it worked. A few more charges and it stopped working. I tried all of the outlets and extension cords in our house, yet it still doesn't work. My Nexus was running low on battery so I had to switch it off. Then I tried charging it with the USB ports on my PC. It worked for a week.

It stopped working, and I was really desperate in trying to make it work cause my tablet is running out of juice and I don't want it to be dead. I immediately bought a Samsung charger in a local store. It's output power is 4.75V and 0.4A. I tried charging with it and gosh, it worked. I settled using this low-output charger because I really could not find a new microUSB cable in here or a microUSB charger. It takes centuries to charge my Nexus completely, but I had to bear with it cause it's the only one I can use. I used it for a month or so.

Until then, I was pretty much contented with it. However, I noticed that it's not charging again. Like, it's been 2 hours and the battery hasn't moved up at least a percent up. I was scared because the battery only has 10% left, and I don't know what to do. I immediately shut it down and tried to think of something. I thought of buying a microUSB cable from eBay since I had extra money on PayPal (it cost me about $4) with free shipping. Of course, it came a month and two weeks after I bought it, what do you expect from free shipping?

I immediately plugged the microUSB into my charging port, and I panicked because it didn't work. The charging indicator didn't appear like usual, so I was really crazy, wanting to do something about it. I tried opening it and I think this is where the trouble came. I used a bread knife in opening the rear of the tablet. I tried pushing some stuff near the battery in, to check if they're compact and working. I put the cover back to the tablet and tried charging again. Nope, nothing yet.

I was up until 2AM and then I saw my tablet booting up. I became really happy then. I quickly did what the websites are telling me to, press power and then volume down, bootloader and then power off. I slept and let it charge overnight. I woke up around 12PM. The first thing that I did was to check my tablet. It was charged but not full. I was pretty happy, because you know, the feels. lol.

But anyways, that microusb cable only worked for a day. I was mad when I used my tablet and then when I went to charge it, the battery wasn't moving up again. I was worried, desperate and deeply sad inside at the same time, for my tablet has a real sentimental value to me. It's always like that, I mean, I've bought like $50 worth of microusb chargers, they all work in the start, but a day or so they stop working.

Finally, I've decided to make the decision of bringing it to a mobile technician. ASUS service centers here in the Philippines are crap, they don't work on tablets. I'm gonna cut it short, he replaced my battery (with an improvised battery composed of 3x phone-size batteries), but the thingy with colored wires that you plug into the motherboard is still the same. He also replaced my charging port. He reinstalled the OS and all that good stuff, but my files were saved. Thank God.

I went home and tried some of my latest chargers. A microusb cable with the original adapter worked for a while, but it never completed charging fully. A microUSB charger from DealExtreme with an individual adapter (5V, 2A) also worked, and it's the one that I'm using right now, but it's kinda weird that it never went up 38%. And take note that it took me 6 hours to climb up from 22% to 38%. The reason why I posted all of this is that it's not charging again, and I feel like I've wasted money on replacing parts that didn't really work at all. Or maybe they malfunctioned again because of my chargers? I'm really going crazy right now, I actually have no idea what's going on in my tablet.

Also, the battery is supposed to have 4325mAh capacity right? Why is mine only 3260mAh? I've noticed this before my batteries were replaced (when I was struggling on trying to make the microusb cable work). Since the battery and charging port has been replaced, what else do I need to do? I mean, I'm really freaking desperate right now. I don't know how it will ever be able to charge properly again. Maybe with a charging dock? Man, that costs $60+, excluding shipping. And I'm not even sure if it will work.

I want to buy the Nexus 7 2013 but I really don't have any money right now to spend on buying one, and besides I'd like to have my Nexus 7 2012 fixed first. So please help me out guys, tell me how I can fix this thing.

My ideas right now :

1. Buy an original microUSB cable from Asus (if possible), or probably including the adapter.

2. Buy a charging dock. But it's so expensive.

3. Check if there's some more broken stuff in the battery. This one was taken from the old battery, so it might be the one causing the malfunction.

Please help me, I'm begging you all. :crying: