Strange audio problem with Messiah 2 chip

[IVAHOTROD]

i had to do a bit of re-calibration on the laser on this model (even though its only a year old) No backups would load until i did this. if you've done the old ps1 laser tuning, its just the same for the ps2 laser, except now u have 2 pots, one for cd and dvd tuning.

by the sounds of it, you have wired a wire or two in the wrong place ?? need more info from you...is it just ps1 games this happens with or both and dvd ? did the ps2 work fine before chipping ?? Is there a clicking sound from the laser ??

if its ps1 only games not working, then check the SCEX wire, it must be on the connection shown in the diagram, not the same one for the old NEO2.2 SCEX connection (i fell for this one at the start cos it was an easier point)

cant think of anything else except for the the bit where u have to cut a track on the back of the messiah 2 chip due to production fault on some chips where it fails to initialise.

i suggest going round all your solder points and verify them all
checking for bridges.

hope this helps.