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Atari 400 Sound Problem

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Hello, my Atari 400 has a problem with some carts. Some play fine and some have a buzz in the audio. Anyone have any suggestions as to how to fix this and what is causing it? Thanks.

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buzzing sound: mostly because of bad capacitors in the PSU-circuit.

Or due to bad shielding of the computer / RF-wire. But knowing the

tank inside the 400 this will not be the case, even a nuclear blast won't

disturb this baby ;-)


Cleaning the cartrige contact with a toothbrush/cleaner does miracles too.

Best is to clean the contacts of the cartridge AND atari-slot.




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