We are trying to repaint kitchen cupboards.
The cupboards are currently a dark brownish-red stain (or paint ) (not sure) but does have a like coating. We are not sure about the preperation. We know we have to take them off but do we sand them do we wash them with a good solution (such as T.S.P) or both?? We know we have to do a coat of primer
Is the primer basically to prevent bleeding of the under paint or does it help with the adherense of the new paint. and will the sanding prevent adherense to the new paint.
I've worked with wood before, and have always sanded but that was mainly for staining. so to repaint is sanding necessary??
Basic step by step instructions and any tips would be GREATLY APPRECIATED.
THANKS

I have been a owner of a painting business for awhile,and I would sand them with a 120 grit sandpaper,nothing major you are not trying to take it off,just roughing the surface for adhesion.
Then prime with a oil or latex primer,it really doesn't matter get what you like.Then use the topcoat you'd like to use.
Some say not to use latex primer then a oil top coat or vice versa because it won't work.
I have yet to have anyproblems with this.
I use oil primer on exterior new wood because it does not bleed thru as well,and still use a latex paint for the finish coat,and never have i had any problems.