Question about Recoton Advent Advent HT3251A TV

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Advent model HT3251A

32” high definition t.v., model listed above. It was unused for at least a year, and when we energized the set, a light spark developed at the rear right corner of the set. I had opened the cabinet to see what might have happened, surmsing it may have been a fuseable link or something. It is the last component on the right rear of the circuit board assembly. I believe there are two wires going to different parts of the unit, and a line, roughly a ¼” in diameter that goes directly to the tube. There is a little tape band around this component with what looks like a metal retention band, and the sparking appears to be generating from that component. I am trying to identify the component, and see if it is in fact replaceable. Can you help me since I do not possess a schematic? Thanks. no power collector of hot has 50v and when disconnected i have no voltage sounds like power supply but no schematic and dont know what to check

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  • richard will Jun 06, 2008

    when i disconnect hot collector should there be 130v at the collector and if not isnt this a power supp problem,because there is only 50-60v once hot collector is disconnected

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The sparks could be generated due to a loose connection.
I would suggest to try to secure that wire(s) and see if the sparks go away, if they do; you will need to resolder that connection.
Let me know if you need further assistance.

Posted on May 29, 2008

  • Jaime Hernandez May 29, 2008

    The part you are referring to is called flyback transformer. There is a very high voltage going to the tube through that ¼” wire. If the high voltage is leaking from that part, you will have to replace it. The reason you only have 50 volts on your HOT is because the flyback is defective.

    Try to unsolder the B+ voltage line from your flyback and see if that restore the HOT voltage to 130 volts.

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What is the circuit designation of the part in question? It should be marked on the board as Rxxx or FBxxx. Post that here. That should allow us to identify what it is at the very least.

Dan

Posted on May 29, 2008

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