You should tear it down again and check your work. Keep in mind that such a flash doesn't tell us what's dead or disconnected. But since it worked before there is some hope you can take it apart again to check your work.
my laptop is a packard bell dot (same as the acer aspire one zg5) equipped with a hannstar j mv-4 94v, I disassembled it to fix a wireless module problem, then when i assembled it back and put on the battery the power and charge leds flash for a second and nothing happens when i try to power it on.
same reaction happens when i plug on the power supply or put on the battery.
even the battery doesn't seem to charge anymore (its indicator just flashes for a second as i said)
here's a video: http://youtu.be/ZpjB0Q9bVkU
any help or suggestion?