No Sound from Slot 1 and Exception Errors on MV-4F

I just got done doing a battery clip mod to my board. When I put the board back in, I started having problems. I just want to play. I don't want to fix it again, but oh well.

Problem 1: No sound from slot 1. The graphics play fine, but I get no sound from this slot at all. I can load as many carts in the other slots as I want, but no sound from slot 1.
Problem 2: If I have all slots loaded now, I get the following errors. The UNIBIOS screen is missing the logo too.

Looks like a connection issue most likely. Try reseating the top board. And don't for to clear your backup ram in the hardware test.

Xian Xi said:

Looks like a connection issue most likely. Try reseating the top board. And don't for to clear your backup ram in the hardware test.

Click to expand...

Thanks Xian! That worked.

What worked, exactly?

Hewitson said:

What worked, exactly?

Click to expand...

Reseating the top board.