Results 1 to 4 of 4

Thread: Trying to fix sons TV Samsung LA40A450C1DXXY CIRCUIT BOARD bn94-02127b

  1. #1
    Junior Member
    Join Date
    Jul 2013
    Posts
    1
    Thanks
    0
    Thanked 0 Times in 0 Posts
    Rep Power
    0
    Reputation
    10

    Smile Trying to fix sons TV Samsung LA40A450C1DXXY CIRCUIT BOARD bn94-02127b

    I need a main PCB circuit for a Samsung LA40A450C1DXXY LCD TV circuit board bn94-02127b as I am a retired TV & Video Tech trying to fix my sons TV I have been told that the main board (part BN94-02127B) is no longer available in au and is not supported by the USA for parts or ic's etc? the problem is a vertical flickering red Chroma bar aprox 5 inches wide bar in red hue only (Green colour is fine) and extending from the left hand lcd edge towards centre, however the tv does work with extra heat sinks on ic’s and a fan on the main board to keep it cool I have not yet found which part is in a thermal run away yet and I am trying to get hold of the actual main PCB circuit with a view to repairing it. I have already changed all caps in the PSU inverter board etc and am trying to either replace the main PCB, (but they tell me it is not available in Australia any more) or repair the board by isolating the shorted SMT’s, IC’s or diodes etc? & replace them ,I have tested the LCD panel on another TV and its fine can anyone please help?



Look Here ->
  • #2
    Junior Member Rentakill's Avatar
    Join Date
    Jan 2008
    Location
    Downunder
    Posts
    158
    Thanks
    19
    Thanked 57 Times in 33 Posts
    Rep Power
    218
    Reputation
    762

    Default

    Gidday Zebrock.

    Try ebay or aliexpress.
    I had a similar problem with a 32" samsung a few months back.
    I came accross some spares on aliexpress for a very good price, which were here in no time.
    Hope that helps.

    Cheers

    Ren

  • #3
    Senior Member
    mickstv's Avatar
    Join Date
    Jan 2010
    Age
    51
    Posts
    4,173
    Thanks
    2,225
    Thanked 2,404 Times in 1,392 Posts
    Rep Power
    681
    Reputation
    18426

    Default

    Sorry to say I checked the service manual, it doesn't have a schematic for the tuner board.

    It's been a few years since I was in the trade, but back in the day Samsung had a few substitute boards that worked in that model. As I'm no longer in the trade I have no way of finding out if this is still the case. But another member here on Austech called CHRISS may be able to help, if he's still an agent for Samsung. He might see this thread the next time he's online or maybe sent him a PM as it will be redirected to his private email address.

  • The Following User Says Thank You to mickstv For This Useful Post:

    best4less (11-07-13)

  • #4
    Member CHRISS's Avatar
    Join Date
    Sep 2011
    Location
    Perth WA
    Posts
    491
    Thanks
    142
    Thanked 312 Times in 184 Posts
    Rep Power
    209
    Reputation
    2015

    Default

    BN94-02127B no longer available
    Alternative parts information
    BN94-02478F IN STOCK FROM SAMSUNG

    Chriss

  • Bookmarks

    Posting Permissions

    • You may not post new threads
    • You may not post replies
    • You may not post attachments
    • You may not edit your posts
    •