Panasonic electrolytic caps?

Discussion in 'General Electronics Chat' started by frank55, Dec 28, 2013.

  1. frank55

    Thread Starter Member

    Dec 6, 2013
    253
    10
  2. bertus

    Administrator

    Apr 5, 2008
    15,648
    2,346
    Hello,

    Have a GOOD look at the pages.
    At newark you will need to buy at least 600 capacitors.
    At Digikey, you can buy one if you need.

    Bertus
     
  3. bountyhunter

    Well-Known Member

    Sep 7, 2009
    2,498
    507
  4. frank55

    Thread Starter Member

    Dec 6, 2013
    253
    10
    Thanks bountyhunter;tv power sup V. H. output,the thing is that i changed the 2 MCZ3001 driver ics and the tv is working great,but it was suggested by the supplyer to change the 2 big electrolitic 1200uf 250v 105degrees Rabycon,i ordered panasonic HC but they are a little larger and lower on hight don't fit there,but i also checked the ESR and Capacitance on the old caps and they measure better than the new ones i bouhgt.
    my question is if they test good why should i change them?
    they also suggest to change 2 mylar 0.1uf coupling caps and 2 metalized film 47 and 49 these also check good.
     
  5. #12

    Expert

    Nov 30, 2010
    16,284
    6,797
    Age. Aluminum electrolytic caps are one of the few parts that have a predictable failure time.
     
  6. frank55

    Thread Starter Member

    Dec 6, 2013
    253
    10

    Here are pics after the change of mcz3001
     
  7. bountyhunter

    Well-Known Member

    Sep 7, 2009
    2,498
    507
    Which is typically a few thousand hours.
     
  8. bountyhunter

    Well-Known Member

    Sep 7, 2009
    2,498
    507
    The old caps are probably higher frequency (Low ESR) types which the new Panasonics are not.
     
  9. bountyhunter

    Well-Known Member

    Sep 7, 2009
    2,498
    507
    I looked at the picture, that looks like a HF switcher. Those caps had better be switcher caps with low ESR or they will not work right and will die soon.
     
Loading...