PC Engine Duo - Red Book Audio Dies In Same Place In Game

[FinalTurbo]

Hello everyone,

I did a bunch of repairs on my PC Engine Duo, and I thought I finally had it working properly but I am noticing that while I am playing Valis,
the audio in the second custscene once you start the game completely cuts out midway through, and then the audio returns once the next level loads.

Does anyone have any ideas what might cause this?

Thanks

[Keith Courage]

First re-grease the lens rails and see what happens. If the same issue persists, you will have to start making lens adjustments. Usually V101 or V102 are the ones to try. 103, 104, and 105 rarely need to be adjusted.