Random performance after waterdamage

Not much water was spilled on the closed Computer who was in sleep mode. the water was wiped off. I thought it was o.k. but when I tried in the morning

the light in front was permanently on,

the display was dark also after pushing the strart button

The battery showede fully loaded on the back.

A few hours later there was a second try and it started normal and was oerforming as usual.

It was at night the computer was put on sleep mode.

Next morning no performance.

After pushing start button long time lite went off.

Taking Battery out cleaning the connectors with alkohol.

The computer started again normal,

Internet copnnection worked Itunes worked

but after a few minutes it shut off without warning as if there was no power.

Now it starts with battery which shows battery about 87% loaded

then I try getting Mail started, display goes black

computer tries to start 2 times again on

it´s own but does not make it.

It acts as if there was not enough Power, but battery shows 4 green dots

The power adaptor shows only green lite, so no loading happens.

Suspition, that water came in where the display joins the case in that turning link

can I take that off and clean the connections there or is it a cable in the joint to the display?

I did not find any discription bout that joint.