Macbook Pro won't boot.

[cablerun]

My Macbook pro will not boot up. I ran it on battery until it was completely dead. After a re-charge it wont come up. The front light comes on, the disk spools up, but nothing else. no tone, nothing. Tried 2 new bats, full greens, tried 2 known good mag connectors & power plugs. no go. did all the resets, still no go.
I'm told it needs a new logic board. I cannot afford one. I'm also told this is a common problem with my model.
I am a fair hand with basic electronics & hand tools. Can someone please tell me what the bad component(s) are on the board?
Thanks

 

[blueroom]

It's unrepairable there are no user serviceable parts on the board. You might be able to find a replacement mainboard on eBay.

 

[204353]

It would be helpful if you could specify exactly which model of MacBook Pro you've got. Since you've said it's got a light on the front, it can't be a MacBook Pro with Retina display.

I'm taking a guess here, but do you have a MacBook Pro with the infamous 8600M GT graphics chip? Is it just showing a black screen when you turn it on?

I had a 2007 MacBook Pro with that GPU in it. It failed three times with a black screen on boot; every time I had to get the logic board replaced, although it was covered by the extended repair program at the time.