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Thread: Protecting Hifi from Mains problems

  1. #11
    Join Date: Oct 2016

    Location: Bolton, England

    Posts: 804
    I'm Andrew.

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    Quote Originally Posted by Macca View Post
    Could just be random equipment failure and absolutely nothing to do with the mains, or mains surges.
    Yes, indeed, or the failures might not be random and be due to frayed wire at the ends of the speaker cable or some such cause. I think jumping to the conclusion that it's a problem with the mains is a bit premature.

  2. #12
    Join Date: Apr 2009

    Location: Near Saffron Walden, Essex

    Posts: 5,381
    I'm Dave.

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    Quote Originally Posted by walpurgis View Post
    Yes. I get light bulbs blowing a lot and had a mains transfomer in an amp need replacing. It could be highish voltage locally or surges and spikes. I'm also wary of DC content in mains and I'm planning to use a DC blocker. Useful surge and spike protectors are used with professional computers. I have one or two of these.
    We go through light bulbs at an alarming rate but only the modern ones. We have a couple of ancient bulbs which go on and on, while the modern ones with smaller glass bulbs last only a few weeks.

    They don't make em like they used to..

  3. #13
    Join Date: Jan 2009

    Location: Essex

    Posts: 16,450
    I'm openingabottleofwine.

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    Quote Originally Posted by hifi_dave View Post
    We go through light bulbs at an alarming rate but only the modern ones. We have a couple of ancient bulbs which go on and on, while the modern ones with smaller glass bulbs last only a few weeks.

    They don't make em like they used to..
    Are your "modern" light bulbs incandescent or LED?
    Have you listened to this month's choice in the Album Club?

    Barry

  4. #14
    Join Date: Apr 2009

    Location: Near Saffron Walden, Essex

    Posts: 5,381
    I'm Dave.

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    We have all sorts. Some rooms are Halogen downlights, some are LED but the ones I am talking about are incandescent, which give a warmer light.

  5. #15
    Join Date: Oct 2017

    Location: Coventry

    Posts: 13
    I'm Mick.

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    Have you checked what voltage comes out of your mains sockets?

    I had solar panels fitted and the inverter tripped one-day.
    So i did a bit of digging and it turned out the mains voltage was set too high at the sub station.

    The nearer you are the higher the voltage.
    Anyway i contacted the leccy company and they fitted a device in my house that monitored the voltage constantly for 2 weeks. it showed that the voltage reached 265volts periodically.
    So they came out and adjusted the tapping in the sub station. All good now.

    Lots of appliances are rated to 230v. not the nearer to 250volts from uk sockets.

  6. #16
    Join Date: Mar 2016

    Location: Brighton, UK.

    Posts: 282
    I'm Mike.

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    Quote Originally Posted by Macca View Post
    Doesn't explain why the Naim is seemingly immune from the problem.
    Quite, I've used Olive and Black Naim kit for 3 years in this current flat, all been fine, and yes, I leave them on all the time! As stated I blew one Roksan, one old JVC ax-4.
    Last edited by Mikeandvan; 07-12-2017 at 17:34.

  7. #17
    Join Date: Mar 2016

    Location: Brighton, UK.

    Posts: 282
    I'm Mike.

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    I probably should have stated, I live above a busy restaurant.

  8. #18
    Join Date: Mar 2016

    Location: Brighton, UK.

    Posts: 282
    I'm Mike.

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    Quote Originally Posted by bobvfr View Post
    Maplin's (And most electrical suppliers) sell surge protectors or you could buy a UPS (Uninterruptable Power Supply) and that way you can still listen to your music if the power goes off (amount of time dependant on size of UPS).
    My power never goes off, it is 100% consistent. Would a surge protector do the trick? They seem cheap enough. BTW the amps have gone bang on switch on, they've never gotten past that stage. The Naims have been 100% fine. I did briefly try another Jap amp, some very cheap Yamaha, that was fine too.

  9. #19
    Join Date: Mar 2016

    Location: Brighton, UK.

    Posts: 282
    I'm Mike.

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    Quote Originally Posted by struth View Post
    a mains regenerator would do it
    They're also known as mains conditioners right?
    Thanks, can you tell me of any cheapish ones? A quick Google has thrown up 5k monstrosities!

  10. #20
    Join Date: Mar 2016

    Location: Brighton, UK.

    Posts: 282
    I'm Mike.

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    https://www.ebay.co.uk/itm/Tacima-CS...8AAOSwjDZYlImT

    Only 40 and it gets a What hi-fi 5 stars!

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