Simms Watts PA100 Recap and Service

DSC_16774 El34s... one a Mullard4 El34s… one a MullardDSC_1685and never cleaned since..and never cleaned since..Broken Bulgin socket...Broken Bulgin socket…Replaced with modern mains connectorReplaced with modern mains connectorVery neat! some of the power supply caps are set to blow..Very neat! some of the power supply caps are set to blow..DSC_1681DSC_1682Bias and bias balance control, some of the power supply caps are set to blow..Bias and bias balance control, some of the power supply caps are set to blow..DSC_1733new caps in positionnew caps in positionDSC_1730DSC_1732Smaller than the originals but twice the capacity  (the rectifier can take it )Smaller than the originals but twice the capacity (the rectifier can take it )ooops broken impedance  switch.. too easy to rest the whole chassis on this when it  is out the caseooops broken impedance switch.. too easy to rest the whole chassis on this when it is out the caseNew switch installedNew switch installedDSC_1710Tubs in and biased upTubs in and biased upWorking on the bench first time.. bias control range excellent even for modern tubes a few scratch pots easily fixed then all good to go!Working on the bench first time.. bias control range excellent even for modern tubes a few scratch pots easily fixed then all good to go!

2 thoughts on “Simms Watts PA100 Recap and Service

  1. Hello I have an original Simms watts P.A. System 100 w silver face
    4 s.w. Column speakers twin d.j. Decks purchased from their shop
    In Ealing s.w. London 1969 ish.
    Needs updating and serviice or suggestion?
    Please call 01428 715490 Paul. Or son Otis.
    Regards Paul.

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