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Coin-Op : Arcade : Mario Bros. : KB-1691-3


Distorted Sound (Hum, Buzz) at Certain Points of Gameplay


Anthony Pietrak


Basically during certain points of the game a constant hum will occur for 5-10 seconds. At other points a similar constant beep or buzz may occur. This is NOT the same as the usual speaker hum that occurs in Nintendo's game (such as DK, DK Jr. and Mario Bros.).

This is actually a power related issue, I had installed a new switching power supply and the game board was only getting 4.94 VDC. Increasing the power up to 5.12 VDC solved the problem.

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