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msaada:Tv samsung flat screen imezima ghafla

Discussion in 'Tech, Gadgets & Science Forum' started by poposindege, Jun 18, 2012.

  1. poposindege

    poposindege JF-Expert Member

    #1
    Jun 18, 2012
    Joined: Nov 22, 2010
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    Wadau wa jukwaa habari zenu
    Tv yangu ya Samsung Flat screen imezima ghafla na sijajua tatizo nini.
    Ukiiwasha inawaka taa ya power ile nyekundu kwa kubeep yaani inawaka na kuzima baadae inazima kabisa.Nimejaribu mara kadhaa lakini wapi.Naomba msaada ndugu zangu wa kitaalamu nini tatizo na nifanye je ili iweze kupona.
    Ni SAMSUNG
    MODEL:LA26A450C1
    TYPE NO:LA26A450
    Nasubiri ushauri wenu
     
  2. Penguin-1

    Penguin-1 JF-Expert Member

    #2
    Jun 18, 2012
    Joined: Apr 30, 2012
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    kama una warrant nenda samsung pale town watakurekebishia fasta
    inawezekana power supply yake imepata mushkel
     
  3. poposindege

    poposindege JF-Expert Member

    #3
    Jun 19, 2012
    Joined: Nov 22, 2010
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    asante sana mkuu kwa ushauri mzuri,lakini bahati mbaya haina warrant,kwa hiyo wapi naweza pata fundi wa kunirekebishia hilo tatizo?
     
  4. muwaha

    muwaha JF-Expert Member

    #4
    Jun 19, 2012
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    unaweza kuiacha kwa muda ikiwa out of power(kama dk 30) then washa, kama tatizo bado tumia warrant uliyopewa.
     
  5. poposindege

    poposindege JF-Expert Member

    #5
    Jun 19, 2012
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    nimefanya hivyo mkuu bado bila bila,na sina warrant
     
  6. ney kush

    ney kush JF-Expert Member

    #6
    Jun 19, 2012
    Joined: Feb 16, 2012
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    nenda kwa fundi mbona jijini mafundi wengi tu kule kariakoo... au nenda samsung wakufanyie matengenezo zen uwalipe
     
  7. Mbimbinho

    Mbimbinho JF-Expert Member

    #7
    Jun 19, 2012
    Joined: Aug 1, 2009
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    Sijui kwa bongo, but hata kama huna warranty ni bora uwapelekee wenye kampuni wakutengenezee though you'll have to pay instead of giving it to the local technician. Mafundi wengi wezi watahamisha baadhi ya useful items ndani ya tv yako.
    Just ushauri tu, hutaki unaacha.:wink2:
     
  8. Mkaa Mweupe

    Mkaa Mweupe JF-Expert Member

    #8
    Jun 19, 2012
    Joined: Jun 29, 2007
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    Here is the solution

    Hi, huge thanks for the finding, I did it myself, my LN-S4041D is working as good as new.

    This is how it looks from the back after cover has been removed (19 screws! [​IMG] )
    Big light PCB is a power supply board, our caps are on its upper right corner.

    [​IMG]

    Here is a close up of those four capacitors, as you can see they are inflated, on top of two middle ones there is a dark spot of burnt electrolyte.
    [​IMG]

    This is an image from the side, all four of them bumped
    [​IMG]

    I unsoldered them, here you can see their marks CM812, CM817, CM811 and CS806.
    All four are rated 1000mF 10V, I didn't touch others that look good, they are rated for 25V.

    [​IMG]

    I'm in Canada, we have other store for electronic components: SAYAL, I found there 1000mF 35V for $1.35 CAD each, they are also made by Samsung [​IMG]
    By the way, original capacitors are designed for maximum working temperature of 105C, new ones however for 85C, I hope it won't come to that.

    [​IMG]

    35V capacitors are 25-30% bigger, do not cut the legs right away, first solder then cut, solder above PCB to give a little more freedom. Sorry for the background [​IMG]
    [​IMG]

    This is how it looks after rework, as you can see, unlike original ones, they are touching each other.
    [​IMG]

    Here is a view from the angle, a small one on the right CM809 has been pushed by a bigger capacitor a little, so keep in mind to leave some extra length on legs to pull it away from it after soldering.
    [​IMG]

    Good luck and don't be afraid, it just needs a little patience (for better experience) a little fear (for caution) and a strong wish to save money (I hope it's worth it) [​IMG] .


    source: undisclosed
     
  9. poposindege

    poposindege JF-Expert Member

    #9
    Jun 19, 2012
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    nashukuru sana kwa ushauri wenu ntaenda kuwaona wataalam soon
     
  10. Maarko

    Maarko JF-Expert Member

    #10
    Jun 19, 2012
    Joined: Apr 11, 2011
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    Kama unahakika tv yako ni Original nenda kwenye center yoyote ya Samsung watakutengenzea,ila mjue kuna tv nyingi sana Flat screen ambazo ni Fake,muwe makini sana mnapoenda kununua tv.
     
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