Vic20 - Audio missing with some carts

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max

Vic20 - Audio missing with some carts

Post by max »

Hi all this is Max from Italy.
I'm new in this forum and I've got a problem...
I've just buyed a Vic20 on ebay and I've more or less 20 cartridges.
Most are perfect... but some runs w/out sound.
I'm talking about classic Vic20 games like Jupiter Lander and
Cosmic Cruncher (a PacMan clone) that I'm sure have sound
effects and music... ok.. sound effects and no more :-)

Modulator seems to work well..
Note that I've two carts of Jupiter Lander the two without sound!!
I've got the same problem with some games loaded from tape...

Has anyone experienced the same problem?
Any help will be appreciated..
Thanks for Your attention
max
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