Won't start up on battery power or on adapter
My MacBook Pro won't turn on with battery or adapter. I've tried the method of holding the power button with no power to it for Ten seconds and then plugging everything back in. That worked a few times and it was fine as long as it was on and had power. If the battery power got too low or if I shut if off its tough to get it started now. I suspect that one of the boards inside is going or is now gone, seeing as how it won't start up at all now. I have the correct power cord for the laptop. It doesn't turn on at all when I push the power button. No fan noises, no lights on the front. Mag shows green and the battery shows as fully charged.
I noticed the last few times the battery died without me turning it completely off it was tough to turn back on and we went away for the weekend, so thinking it was cause of that I turned it completely off and now it looks like it's completely dead. It's really cold so I tried having it on my lap for a little while but that's not working either. I had a windows computer that would quit installing windows when the laptop got too hot, which it always did when it was installing. Had to have it downstairs in the cold basement for it to completely install and thought that might be a similar issue.
I did spill a beer on it about a year ago. I immediately turned it over and angled it so what made it in ran to the side without the hard drive. After letting it dry for a couple days I turned it on and it ran fine with the exception of the keyboard being dead. I bought a Bluetooth keyboard for it and that worked out great. I was going to replace the keyboard at some point, which will be now if I have to replace a board as well.
I saw on here that others had similar problems, so I'm pretty sure it's not the beer(unless they spilled some on theirs also) and I'm pretty sure it's not software issue from new OS, update, etc. Just looking for some advice on which board it could be and a possible cost estimate for a DIY job.
Edit: If I replace the logic board will it just start up or will I need to reinstall everything on the hard drive?
Second Edit: Finally got it to boot up. Left it to warm up on my lap for like an hour and took all power off of it, held the power button for 8 seconds, put the battery back in, and hit the power button 3 times and it booted back up. I'm backing up everything when I get home (phew). Had TimeMachine going before, but it was taking a while to backup since the last OS update and haven't had it done for a few months.
Is this a good question?