A4000 motherboard

[doctorq]

Hi,

I have a problem with my A4000 motherboard. First of all, my serial ports isn't working at all. Is this a fixable problem?

The worst problem is that my audio ports can't play loud. Even if I have turned up the volume on my speakers on max, the music is barely listenable.

I put the computer in a tower, can this be the problem?

[doctorq]

My battery isn't leaking, because the clock still works, but I am aware of it. Thank you for reminding me.

The speakers I use is integrated in my monitor. I used the speakers with my A1200 without any problems.

Anybody knows how much the CIA cost? Could I use a chip from one of my other Amigas?

I bought a Mirage 4000 Pro Tower with Mediator, but I don't know if there are any problems with this type of towers. They use a different PSU than the old desktop.