Battery problem

Honda Accord 1991, EX-R, 272 000km, 2.2L, F22A4

Hello,

It all started when my car had a gas emisson problem. I fixed it ( at least, I think.) By replacing the Distributor and Rotor. But I dropped the rotor and I had to remove the battery to pick it up. But when I put it back, it blew the fuse. So I replaced it, it blew again. And again. A mecanic told me that it could be due to something still on in the car causing the battery to send a high charg to the fuse. Or it Short-circuited.

So, before I get it checked, any tips?

Thanks.