Power Switch Issue with amp
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  1. #1
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    Power Switch Issue with amp

    My VT50 sounds great, especially with the new Gold Lion KT88 tubes. Over the past couple days I have noticed that the power switch appears to be failing. When I turn it on the power comes on and then turns off when the switch is fully engaged. If I press the switch back just a tad it seems to come on and work fine. Therefore I think the switch might be failing.

    Does anyone know what's involved in replacing the switch? Is it something I can do... I would hate to send it to ARC just to replace a power switch.
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  2. #2
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    Re: Power Switch Issue with amp

    Maybe you could call/contact ARC for a replacement part. I have to believe you can handle it yourself or find a local tech who's handy with a soldering iron to quickly swap it out.
    Joe

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  3. #3
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    Re: Power Switch Issue with amp

    Hey Joe,

    I was thinking the same thing. I just dropped a line to ARC to get their take and see if I can get a switch from them. I have not looked closely at what would be involved, but I do not believe it would be that difficult.
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  4. #4
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    Re: Power Switch Issue with amp

    Randy

    If it's the typical red rocker switch you can buy them from many parts supply houses like Parts Express or MCM or even Ebay. Usually soldered in but many times just clipped in. Should be an easy fix. I changed one on a Hafler amp years ago.
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  5. #5
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    Re: Power Switch Issue with amp

    Probably got to pull the bottom off and see if it is accessible from there...
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  6. #6
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    Re: Power Switch Issue with amp

    Main - JVC QL-Y7/Denon Dl-301 Mk II, Vista Audio Phono 2, Marantz HD-CD1, Lumin D1 w/Sbooster, PS Audio DirectStream DAC w/Bridge II, BHK Preamp with BHK 250 amp/Rogue ST-100, Nola KO's, (2) Rythmik F12SE, Dueland IC's and SC, Triode Wire Labs PC's, Equi=Core 1800, PI Audio Uberbuss, Timbernation rack

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  7. #7
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    Re: Power Switch Issue with amp

    I pulled the bottom off. It is a switch with two connector posts and two wires soldered on. The only real concern is getting the correct size. It has those little pressure clips that hold the switch in place, two on each side.

    One side benefit. The bottom and the top have the exact same metal plate. It appears as if the bottom has never been removed, and therefore I was able to exchange the two. So instead of the few scratches that were on the top of the amplifier, with a little cleanup from the feet rubber residue, it now looks to have a brand new top (which ARC wanted to charge $160 for).
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  9. #8
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    Re: Power Switch Issue with amp

    Randy

    Try e-mailing Chris at Parts Connexion and see if they have service an ARC amp that uses that switch. They carry switches and he or the other techs may know which is the right one.

    http://www.partsconnexion.com/contro...er_switch.html
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  10. #9
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    Re: Power Switch Issue with amp

    I forgot to follow up on this. EJ looked at the switch and ordered an exact replacement. Took him a whole couple minutes to replace it. Works and looks perfect. The feet on the bottom where starting to crack, etc., so I grabbed a set from EJ and replaced them. With the Gold Lion tubes, new top (ahh bottom re-positioned) the amp looks and sounds like new.

    Attached Images Attached Images
    Audio Research LS17 SE, T+A DAC 8 DSD, T+A AMP 8, W4S Recovery, KEF R700, KEF R400b, KEF M500, Ayre Pono
    Oppo BDP-105, Technics ST-9030, MrSpeakers Ether, Richard Gray High Tension Power, Kimber Kable 12TC & 8VS bi-wired
    AudioQuest Niagara 1000, AudioQuest Earth XLR, AudioQuest Anaconda XLR, AudioQuest Coffee USB x2
    Pangea, Wireworld, Gingko, PS Audio, W4S, AQ, Magnum Dynalab, Roon, HQPlayer