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ARCHIVED FORUM -- April 2007 to March 2012
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This is the first Archived Forum which was active between 17th April 2007 and 1st March February 2012

 

Latest post 04-30-2007 8:22 AM by mobeyone. 14 replies.
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  • 04-29-2007 6:01 AM

    OT mains help please!!

    I have struck again!

    Moving a few things around and I hear a bang! Suffered many a heart attack as I checked all was ok and I found my mains box to be at fault.

    Opened up and found some charring to the surface and was wondering if this is repairable? Some photos as below:

     

    I think its the "blue" thing - sorry for the non technical term! But does this look salvagable?

    TIA!
     

  • 04-29-2007 6:15 AM In reply to

    • Craig
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    Re: OT mains help please!!

    Mobe, the Blue component yor refer to looks like a Ceramic Disc Capacitor. Should be available from Maplin or RS. What is the mains box for?

     

    CraigBig Smile

    For millions of years, mankind lived just like the animals. Then something happened which unleashed the power of our imagination. We learned to talk and we learned to listen..

  • 04-29-2007 6:23 AM In reply to

    Re: OT mains help please!!

    Cheers Craig! Its called a JO-EL Powerpoint and I do not think they are produced anymore??

    Fantastic looking and excellent, served me well! but for some reason it went pop yesterday... Changed the fuse anad again went pop...

    Looks like this!

    So is this an easy fix? and what could cause this to go?

  • 04-29-2007 6:43 AM In reply to

    • Craig
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    Re: OT mains help please!!

    Just had a look at their website. Looks like they are still made or at least listed. You said you have replaced the fuse. It will keep on blowing until you have replaced the faulty component. Can you see any numbers on the Capacitor, this should help you find a peplacement. it should be quite easy to replace it only has two connections, just a simple soldering job. That is about the limit of my knowledege on these. Although we use them at work. We just change a PCB which has 3 of these on.

     

    CraigBig Smile

    For millions of years, mankind lived just like the animals. Then something happened which unleashed the power of our imagination. We learned to talk and we learned to listen..

  • 04-29-2007 7:13 AM In reply to

    Re: OT mains help please!!

    Cheers Craig!

    Just need to find someone to fix it for me now!!! 

  • 04-29-2007 7:22 AM In reply to

    • Craig
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    Re: OT mains help please!!

    Have you got something like a local TV repair shop. What you need is someone who can do repairs at component level.

     

    CraigBig Smile

    For millions of years, mankind lived just like the animals. Then something happened which unleashed the power of our imagination. We learned to talk and we learned to listen..

  • 04-29-2007 7:46 AM In reply to

    • Puncher
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    Re: OT mains help please!!

    Not sure its a capacitor. In a mains input circuit its more likely to one of two other devices. The first is a varistor which will be across the mains to protect against overvoltage spikes etc. In normal operation it doesn't actually do anything and so you could actually remove it to see whether you device continues to blow fuses. The other possibility is an NTC thermistor which would be in series with the mains traces. The purpose in this case is to limit inrush current into resevoir capacitors. If it were to go open circuit then your device wouldn't power up at all and if it is shourt circuit you may blow fuses on startup but if you can get it to power up then it serves no further purpose until the next time it is switched on.

    Further investigation required methinks!

    Generally speaking, you aren't learning much if your lips are moving.

  • 04-29-2007 8:12 AM In reply to

    Re: OT mains help please!!

    Hmm, when last changed the fuse the unit did not power up and went bang and has not worked since...

    There are two leds on the front which also have not illuminated since...

    Eitherway... is it repairable?? 

  • 04-29-2007 9:15 AM In reply to

    • Puncher
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    Re: OT mains help please!!

    mobeyone:

    Hmm, when last changed the fuse the unit did not power up and went bang and has not worked since...

    There are two leds on the front which also have not illuminated since...

    Eitherway... is it repairable?? 

    Most things are repairable although it is likely that this isn't actually the fault but a consequence of it.

    Generally speaking, you aren't learning much if your lips are moving.

  • 04-29-2007 1:56 PM In reply to

    Re: OT mains help please!!

    Agree with Puncher.

     If you dont mind paying the postage both ways, I can probably sort it for you.

     Neil

  • 04-29-2007 3:01 PM In reply to

    Re: OT mains help please!!

    Fantastic! You have PM!
  • 04-29-2007 4:04 PM In reply to

    • Graeme
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    Re: OT mains help please!!

    Good Grief! Mobe,

    You want a wee job selling Lucky white heather?LaughingLaughing

    Cheers Graeme
  • 04-30-2007 4:50 AM In reply to

    Re: OT mains help please!!

    Graeme:

    Good Grief! Mobe,

    You want a wee job selling Lucky white heather?LaughingLaughing

    I am even thinking about keeping a rabbits foot in my pocket for good luck at the moment!!! so anything is possible! 

  • 04-30-2007 6:50 AM In reply to

    • Medogsfat
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    Re: OT mains help please!!

    Graeme:

    Good Grief! Mobe,

    You want a wee job selling Lucky white heather?LaughingLaughing

    Beat me to it Graeme.

    Mobe - make sure you stay indoors the next time a thunderstorm passes ManchesterUmbrella. You and 'lecky' just don't mix at the minuteLaughing

     

    Chris.

    The use of metaphors should be avoided like the plague. They're like a red rag to a bull to me.

  • 04-30-2007 8:22 AM In reply to

    Re: OT mains help please!!

    Tell me about it!

    I keep thinking about that old saying.. "bad luck comes in..." I dare not say the rest!!

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