AES half jingle and cut game introduction

Hello,

I got an AES recently, one of the first batch, serial is around 11k.

When booting with a game; half of the neo jingle has no sound.
Kizuna starts, the intro will stop at some point and the title sound says «♥battle♥» instead of «♥super tag battle♥».

With Fatal fury special, same issue.
Half neo jingle sound
Introduction is quicly cut and barely says the title.


Nevertheless the games play fine !

So weird issue, i ll try to post a video later.

But i better get prepare to install a socket and diagnostic BIOS...

Problem found i think.
Upscaler issue and or bad cable.