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Reply to "Railsounds Board 5.5 No Sound"

@Steims posted:

There is an audio amplifier on both sides of the board.   One has an ever so slight blister on it so I think we are onto something here.   Digi-key has 2 models of this as LM4861M and LM4861MX, which one?

The two chips are the same, it's a packaging designation.

@Steims posted:

There is an audio amplifier on both sides of the board.

Sometimes those are used for power handling chores, could it be one it a non-audio use?

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Last edited by gunrunnerjohn

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