Unfortunately that chip is a Tilemap Generator, its a gfx chip, it is unlikely that it is stopping the board from running. You could probably take that chip clean off the board and the board would boot and run, you would just be missing lumps of the graphics.
What's more likely is you have a TTL fault somewhere on the board that is preventing the board from booting. Konami boards of this era are peppered with Fujitsu TTL chips and these are a very common cause of board failure. I would expect the board suffered another fault which demoted it to a scrap board and it got slung in a box with other scrap and suffered the damage to that chip.
However, Fujitsu TTL chips are easy to fault find as they tend to die by losing internal connections to their legs. If an output pin shows up as floating when using a logic probe you know that chips is bad. Input pins are less easy to spot as the signal is present on the external portion of the leg, it just doesnt connect internally. So you need to work out what the output shold be doing based on the inputs you can see. Not too dificult but a bit time consuming.
However, carry on fixing that tile map chip, I am fully prepared to eat my words if the board leaps into life when its fixed
If not then you need to start with the standard troubleshooting stuff listed in the "sticky" thread. But my money would be on the F chips near the 68000 CPU. Only the F TTLs seem to be flaky, the Fujitsu SRAMs are pretty robust.