Sansui Integrated Amplifier replacement volume control troubles

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  • Coert van Dorsten
    New Member
    • Oct 2025
    • 1
    • United Kingdom
    #1

    Sansui Integrated Amplifier replacement volume control troubles

    Hi all you clever electronmic gooroos!

    I was wondering if you could help me with the below issues Im having on a Sansui Integrated amplifier. I bought this unit as a project to repair as Im playing around with basic electromics.The unit has a faulty volume control pot. The service maual refers to a 150K Logarithmic pot (A) tapered stereo. Im struggling to find this value. Seem to be a jump from 100K to 250K. Im now trying a 250K pot. It works but the problem is that as the volume is turned up from starting at Min the Left channel will come on first just slightly before the Right channel joins in. This should obvioulsy start at minimium together. Ive wired the pot with RIGHTsignal IN on track and signal OUT to the amplifier stage on the wiper and then the ground wire on the other side of the track. Ditto for the LEFT Channel .Ive also joined the the 2 ground wires on the pot together.
    I think the 250K pot is too sensitive at minimum making a slight tolearnce differeance bwteen the start of the 2 tracks very noticable.

    Any advice or explenation of what is happening here would be vey much appreciated.

    Thank you

    Coert
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