Question about Samsung TXN3245FP 32" TV

2 Answers

No power turn off, later not turn on, the LED is off, inside the tv i can hear a click, noise like a clock, click, clik, clickthank you I have the same problem exactly as described please help as i cannot afford to pay to get this fixed.Thanks in advance

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  • dtfra Nov 09, 2007

    how hard is this to change

  • dtfra Nov 09, 2007

    no offense but I would like another opinion

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2 Answers

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  • Master
  • 934 Answers

Dtfra,
Check the HOT (Horizontal Output Transistor) for short E-B. You can do this with a DMM or analog multi-meter set to continuity. The HOT has three legs, Base - Collector - Emitter and are marked on the board. Test for cont. between Base and Emitter and if you get infinite it's shorted.
The markings on the IC is J6920 and is Samsung p/n# 0502-001230. You can use a 2sd1880 in it's place to test run the unit but not for any prolonged period of time. A better cross reference would be 2sc5412 if the original part is B/O or not available.
If the HOT is shorted it will feedback and loop the shutdown circuit as fast as it can pulse the primary relay- thus the click, click, click...

Posted on Nov 10, 2007

  • William Rayburn
    William Rayburn Nov 17, 2007

    Not hard to change, just make sure that you use sme heat sink compound on the new installation and don't over solder..

    It's not that expensive to take it into the shop and have it done either... If you have ANY doubts going into this by all means take it to a qualified professional...

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  • Master
  • 790 Answers

Hi
the noise you hear is the RELAY circuit. the relay try to power up but they cant, because the oscillation circuit is defective thats why your power is not coming out! the main problem is the hot side section, the problem is the oscillation circuit.

Posted on Nov 07, 2007

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