12volt TV dead

Discussion in 'The Beginner' started by tan, Jul 3, 2010.

  1. tan

    tan Read Only Funster

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    I made up a 12volt lead for my tv but stupidly did not check polarity and the tv is now dead is it terminal or a simple repair

    thanks

    terry:Doh:
     
  2. pappajohn

    pappajohn Funster Life Member

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    chances are its now a bin-able item.:Sad:

    they dont like reverse polarity but there may be an internal fuse.
     
  3. hilldweller

    hilldweller Funster Life Member

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    Tiny chance of an external fuse too.

    Question is does it work off the original mains power pack.
     
  4. dazzer

    dazzer Read Only Funster

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    Dont suppose its still under guarantee is it?? :Blush:

    Not that im suggesting you take it back to the shop and tell them its stopped working or anything :Wink:, because if you did and it was less than 12 months old they would have to give you a new one, wouldnt they :Eeek:
     
  5. pappajohn

    pappajohn Funster Life Member

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    i did think of that dazzer but being british its not the done thing mate. :Blush:

    but i agree....just take it back and say it dont work. :thumb:
     
  6. dazzer

    dazzer Read Only Funster

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    Quite right too, that why I said i wasnt suggesting such a thing :Rofl1::Rofl1::Rofl1:
     
  7. tan

    tan Read Only Funster

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    dead tv

    Thanks for the help guys but it is out of gauratee and no visible fuse inside or out blown so it looks like a bin job

    terry
     
  8. acting_strange

    acting_strange

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    it might only be a transistor blown
     
  9. tan

    tan Read Only Funster

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    does not light up or anything if transistor wouldnt it at least light up if not how do i find dead transistor
     
  10. hilldweller

    hilldweller Funster Life Member

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    Are you saying it's dead on the mains power supply ?

    How do you find the dead part - you pull it apart and start tracing the circuit starting at the power connector. If you are very lucky you will smell and see a black lump of plast blown apart -- and you'll win the lottery too.

    You could photograph the printed circuit around the power connector and post it here, but make sure it's a good pic.
     
  11. Jaws

    Jaws Funster Life Member

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    Ok, I have a glimmer of good news for you

    Almost all units have an internal fuse and a protection circuit ( consisting of a single diode ! )

    There is EVERY chance the diode has gone and the fuse along with it

    Find someone in your area who has a little electronics know how and there is no reason why they could not fix it for less than a couple of quidlets

    If all else fails, try the library and see if there is a local ham radio club, or better still an electronics club :Smile:
     
  12. hilldweller

    hilldweller Funster Life Member

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    Hmmmmmmmmmmmmmmmmmmmmm.

    And what would you fix for less than a couple of quidlets !!
     
  13. Jaws

    Jaws Funster Life Member

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    I thinkk this is a radio ham thing.. or an amateur thing at least

    When I fixed such stuff for a living it would have cost someone about 30 beer tokens.. Nowadays, I would charge the cost of the parts

    Good example. Spent a couple of years doing sat installs About £40 a time

    Can you imagine if I charged someone to set up their sat dish on their van !! :Rofl1:

    Mind you, I always get paid bloody well in scotch, grub and good company anyway so def am not complaining ! LOL !!
     
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