My Macbook power button doesn''t work but a last resort method of starting it is to short the power on pads on the motherboard. Here is link on where to find them for different models.
www.insidemylaptop.com/turn-on...
This product failure reminded me of a few tips for dealing with electronic gear in the jungle that are worth knowing (www.junglecraft.com.my)
I'm waiting for a new computer to be delivered so apologies to anyone I've been slow getting back to in the past few weeks. Should be up and running again in a month.