Apple Macbook Pro A1278 (K90i, 820-2936)
At first, laptop start, (briefly shorting power-on pads) but without image.
After cleaned it carefully, laptop starts, and boot perfectly, all keys works properly but power button does nothing.
It seems that power button is damaged, but when I keep pressing a key, and at the same time press the power button, this key repeats writing, (in a document text or in a terminal window) but if if I release the key, and keep pressing power button, the same character repeats in the text document until I release the power button.
I have reprogram flash chip with a new dump, but still the same.
Could be that SMC is damaged?
Any ideas?