Weird audio problems with DD2

[ToiletKid]

Hello, I'm new here and I have a question. I have a PC Engine Duo-R and have had no problems with it, but recently I've had some odd problems with the sound on my newly purchased Double Dragon 2 Super CDRom. Here's the runthrough

1. Audio silent on end of first level cinema and on the 2nd level tune (after about a minute)
...I wiped down the CD and blew in my system a lil bit. 2nd level tune plays perfect now, but cinema end of 1 and 2 still have no sound. Also, level 3 tune cuts off every time after a minute or so.
2. That was a few days ago, today I take a clean shirt and rub on the laser a lil and blow in the system again (yeah I know, prolly stupid to do). For the first time both cinemas have audio but level 3 still cuts off after a minute.

So yeah all of the audio seems fine now except level 3's tune. It's really annoying! All of the other music works fine and even level 3's tune works fine when listening to it on a cd player. Any help would be greatly appreciated, I put down 75 bones for the game!

[rolins]

Best advice I can give you is to replace the CD laser. The part model is HOP-M3.

[herr-g]

Try replacing the caps first. Sounds like a typical issue.
http://www.pcenginefx.com/forums/index.php?topic=960.0

[ToiletKid]

I appreciate the suggestions. I just find it odd that the more I wiped the laser lens (and disc) that all of the audio problems went away EXCEPT level 3's tune. None of my other Super CD ROM games seem to have any audio problems either. Odd. Do you think compressed air on the laser (without opening the system) would help any or is that a no no?

[herr-g]

Compressed Air would definately not make anything better.
And if you're not veeeery careful you could easily damage the lens pickup.
The only thing worth trying is to clean the lens with isopropanol using a dust-free cloth or a q-tip.
If that doesn't fix the issue (wich i expect) you should decide if you really want to solder around in there if the problem only occurs in one single game.
I had similar issues a few times where it became worse and worse, so i finally had to repair it.

Good luck,
 herr-g