Electronics 2000

I've got a fruit machine with some damaged chips.One of them has been fitted upside down and I think is damaged.It would seem that they are no longer available from the machine manufacturer.
Could I buy a programmer and read off the settings of my original chip and re-program onto a new chip?
OR
Is it possible to buy a blank chip and then download a datasheet and then re-programme or would it have to be done to the manufacturers own specifications?

How do you know that the chips are damaged? Of course, by mounting a chip upside down it will most likely be damaged, but what about the other chips?
Is there a text printed on the chips? If so, what does it say?
What model is the fruit machine, and what's the name of the manufacturer?
I think it would be easier to find out what each chip does by looking at the printed text on each chip and then finding the datasheets on the Internet. If it's a chip that's no longer in production, the chip can often be emulated in a new programmed chip, but the new chip would have to fit in the old socket, which could be a problem.
If it's a logic only chip it should be possible to program a replacement chip, if you have the datasheet for the old one. If there's analogue circuitry inside the chip you would have to find a direct replacement.
How much is such a fruit machine worth? You would have to put in several hours of work to pull this off.