Pooly Fitted Bios Chip Query?

I brought my modded Neo AES back in Feb this year and have noticed some things which I find rather strange.

For example when switching the Neo to Dev MVS there is no sound during the intro sequence or demo play. However as soom as you insert a credit and get playing sound is as it should be. It's just not giving any sound during the demo play.

This doesn't happen on the Dev Home modes, and in the arcades Neo games all have sound during the demo sequence.

(When I say Demo I mean when you just sit back and let the game run)

Is there something wrong with my chip or installation?

Go into testmode and then the soft dips and make sure demo sounds are not switched off.

Raz

Hey Raz I tried that but to no avail. On my machine the default setting is Demo Sound on, but just to make sure I switched it off, then left the demo running serveral times, and then on with the demo running as well. However I still get no sound on Demo Play with Dev MVS.

What else could it be as I've gone through the dip settings and can't find anything else which might cause that to happen?