MacBook won't boot, power issue?
I am having a problem with my MacBook Pro A1151. When I turn it on, the fans and hard drive spin up, but that is all. No chime, and the dvd drive makes no sound. The light on the front of the computer comes on, but it's a little dim.
Here's what I've tried so far, each time, I've gotten no change:
-Reset PMU, SMC, and PRAM
-Tried booting with no ram, then with a single known working stick in one ram slot, then the other slot
-Unplugged optical drive, hard drive, wireless card
One thing is, I don't have the 85 watt MagSafe power cable, just the 60 watt. But the computer has run fine in the past with the 60 watt connector. And the battery works fine, so could this really be an issue?
I have some hope! After cleaning the board with vinegar, I got more response when I turned the computer on. Dvd drive clicked, screen flashed. I also got a sizzling noise. It occured on the board in one spot, but MAINLY it occured on the power board. When I have the computer battery plugged in, and I plug in the DC-board, it starts making a tiny sizzling sound. It starts making that noise as soon as I plug in the ribbon type cable. I'm really thinking the power board is bad (it seems like the board must be present, even when only the battery is being used to power the computer). Sometimes when I turn it on, nothing happens, or the fans vary their speed up and down, or the screen flickers. So here's what I'm going to get:
1. DC power board
2. 85W MagSafe
3. DC board cables