I have a MacBook Pro (unibody late 2008 15")
A few weeks ago the charger was causing hassle and eventually the connector came loose.
The MacBook eventually lost power.
Then, I asked my friend for a lend of his charger. I plugged it in, no light showed indicating the charger was plugged in. However, upon plugging the charger out, the battery light would blink indicating the laptop was totally drained of battery.
The odd time (when I press loads of keys and power button at the same time) the laptop would turn on and I could work on it, but no battery showed and once I plugged the charger out it would die.
I figured it was something wrong with my friends charger.
I ordered a magsafe connector online and connected it to my broken charger.
I tried it out today and exactly the same thing is happening as did with my friends charger.
No charger indicator light, and battery indicator blinks for a few seconds when I plug it out.
It can't be a fault with the charger, since the same thing happens with my friends charger.
I doubt it's a fault with my MacBook Pro, since I had no issues before until the charger broke.
I tried an SMC reset, though it's hard to know if it worked properly since the battery is totally drained (as the battery light indicates), and I'm not sure if I did the right SMC reset for my specific macbook.