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Audiolab Mdac power board

Discussion in 'audio' started by Desmo67, Apr 6, 2021.

  1. Desmo67

    Desmo67 New Member

    I got my hands on a spares or repair original MDAC some time back and have just started looking at it. The main board looks ok - no obvious signs of damage.
    I get the feeling someone has tried to replace the 5 large Capacitors (none present but they should be 4700 uf I think) on the Power supply daughter board.
    The mid capacitor looks to have overheated (scorch marks on the board) and bled its electrolyte. It also looks as though the interconnections through the board have been damaged - the pads around the holes have lifted and it looks like connections from them, through the holes have snapped. Two of the nearby resistors have also come free (these were included in a plastic bag).
    I'm wondering hoe many layers are there to the PCB and on which capacitor legs are the connectors passing through i.e, is the negative connecting to the track on the top layer and the negative to the bottom layer and where are the top and bottom layers connected.
    Is there a way to repair this - or did I waste my money ?
     
    Last edited: Apr 6, 2021

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