Amiga Apollo 04 card wont boot

[retrostyle]

Hi folks

I recently purchased this none working Apollo card that had battery leak over the boot rom and jumpers i have cleaned it up but still no luck as i keep getting a black screen.
The cpu goes warm when i leave the Amiga on for a time and the fan spins on the card.

Any help would be grateful

I have checked for broken tracks but all look fine

[retrostyle]

Hi

yes its for a 1200 machine
Have replaced the crystal a few times no luck

[retrostyle]

Where can i buy a new F74 chip?

[retrostyle]

Hi

Thanks for the valuable information will remove the ic and check the tracks underneath in the next few days

cheers