I have a Kindle Fire here too that a family dropped off to see if I could fix it. The battery is dead and I tried the holding power button down for 30 seconds trick and nothing happened. I opened up the back and took the motherboard out and everything seems fine. I put it back together and tried plugging it into the USB power ports on my wall outlet. When power is applied a green light lights up. When I plug in the Fire, the light is steady for half a second and then flickers on and off many times a second. I don't understand what is failing inside the Kindle to cut the power off so many times a second.
Any ideas? The motherboard looks fine. No corrosion on the USB input for the Fire. Solder joints look fine. Disconnected the battery and put it back in. I'm thinking either the USB has cracks that I can't see without a magnifying glass or the battery is bad. Can a battery get so discharged that it won't charge back up?
I'm considering jump starting the battery directly, I've done something similar on my old galaxy nexus.
Any input is appreciated!
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---------- Post added at 07:52 PM ---------- Previous post was at 07:25 PM ----------
I wanted to add that the green power light on the Fire will not come on at all, and the green light I was talking about on the post above is on my USB wall outlet.
Thanks again
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