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Grundig ST-520 Service mode?

Discussion in 'Electronic Repair' started by bob, Aug 3, 2005.

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  1. bob

    bob Guest

    Grundig ST-520 Service mode? can anybody tell me how to get into this?

    Ive found out that this particulat model comes pre set out of the factory
    with the contrast set to maximum and I want to turn it down, but theres no
    brightness or contrast controls that I can see?!?!

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