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Baldwin D912 issues

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  • Baldwin D912 issues

    Hi,

    A distant relative of mine has a D912 Baldwin organ with some issues as follows.

    1. The Crescendo seems to be "stuck", i.e. the all 5 indicator lights are lit.
    2. Random popping noises.
    3. loud hum coming through speakers.

    I understand the 5v darlington transistor can flake out and cause strange problems to occur.

    Questions:
    1. Does any one have a schematics of this organ?
    2. What is a good source for a replacement 5v darlington transistor? or reliable alternative? As well as the CPU battery?

    Thanks,

    Jan
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