Why not fix it? The replacement cost of a motherboard that will take a
cpu and memory from a couple of years ago is what, $45 for a good one
and it will be upgradeable to the newer and faster cpu come upgrade
time.

Then there is the opportunity cost of the time involved. If it takes
one hour to replace all the capacitors on the board, and the board does
wind up being good, how much was that one hour worth?