Surprising pure water (H₂O) won't hurt electronics! It's the salts and other junk of your tap water or spilled drink thats harmful.
So to clean things you'll need to use both distilled water and reagent quality isopropyl alcohol (85% or higher will do).
You'll need to use the water to clean out the sugar and acids of the tea. Then you'll need to use the isopropyl alcohol to wash down the parts again to act as a drier to pull the excess water out. You still need to let the parts air dry as well. I use a sunny window sill or if you are very careful a pre-heated oven only set to warming (turned off when you put the parts in).
You'll likely need to replace a few parts here. But first give your logic board and SSD a good clean after taking them fully out. I would get a non metal container to dip the parts into. You'll need a soft toothbrush to scrub down any areas that have oxidation. Do be careful! As you don't want to over scrub.
The battery and other parts will need spot treatment. Do be careful with the battery as you don't want to short it out.
I wouldn't go crazy here as many parts won't need to get fully wet.
As an example I would spot clean the ribbon cables. Use a slightly dampened paper towel to wipe them down (changing them out enough so you're not re applying the junk). Use cotton swabs (Q-Tips).
Just wetting them won't be enough as I suspect you have corrosion damage which will need a soft tooth brush to hopefully clean off.
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