A question on circuit board from my beolab 6000

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  • #7378
    mojofml
    BRONZE Member
    • Topics Started 3
    • Total Posts 9

    Just very curious to know and not that I’d dare to, or have the tools/experience, but according to this board, would resoldering the piece currently on the 120v rail to the 240v actually change the voltage requirement for this device?

    IMG_20220710_172949

    #7379
    Guy
    Moderator
    • Warwickshire, UK
    • Topics Started 4
    • Total Posts 197

    You’d have to remove both the bridges (i.e below each 120V label) and replace across the 240V.

    If you consider that the transformer winding terminals are numbered 1 to 8 from the left, then for a 240V supply you need 1 to be connected to 5 (hence the bridge), with the input  supply connected to 4 and 8.

    (That’s from the service manual – avail to Silver and Gold Members!)

    #7402
    mojofml
    BRONZE Member
    • Topics Started 3
    • Total Posts 9

    You’d have to remove both the bridges (i.e below each 120V label) and replace across the 240V. If you consider that the transformer winding terminals are numbered 1 to 8 from the left, then for a 240V supply you need 1 to be connected to 5 (hence the bridge), with the input supply connected to 4 and 8. (That’s from the service manual – avail to Silver and Gold Members!)

     

    Thanks for your advice and the silver/gold material!

    Is it really just as simple as that to change the voltage input?

    Thanks!

    #7405
    Keith Saunders
    Administrator
    • Hampshire, England
    • Topics Started 13
    • Total Posts 100

    Is it really just as simple as that to change the voltage input?

    Yes it is..

    Most older B&O products use transformers with at least two primary windings. When these windings are placed in parellel then it uses 110 volts and when in series its 220 volts..

    In this case they have gone beyond or extended the two primary windings to allow voltages of 100 & 120 volts with 230 & 240 volts.

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