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Shorted mosfet and transistor plus 4 burnt resistors

I HAVE A LG910 MONITOR WITH SHORTED FQPF19N20C MOSFET(Q719) AND TRANSISTOR(Q702) ALSO 4 BURNT RESISTORS
CANNOT TELL THE VALUES. PLEASE IF POSSIBLE ANY FURTHER
CHECKS I HAVE TO DO IF NEW PARTS ARE FITTED.THANKING YOU

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  • 4 more comments 
  • drmakangee Feb 04, 2009

    ON THE LG 910 I NEED TO KNOW THE VALUES OF THE 4
    BURNT RESISTOR SURROUNDED BY Q719(MOSFET FQPF19N20C)AND Q702(TYPE OF TRANSISTOR)AND WHAT FURTHER CHECKS I HAVE TO DO BEFORE NEW PARTS ARE REPLACED

  • drmakangee Feb 04, 2009

    WHAT REPLACEMENT CAN I USE FOR THE MOSFET FQPF19N20C

  • drmakangee Feb 04, 2009

    WHAT SUBSTITUTE CAN I USED FOR MOSFET(FQPF19N20C)
    PLEASE GIVE ME I LIST OF SUBSTITUTES THANK YOU

  • drmakangee Feb 04, 2009

    ANYTHING IN THE BUK OR SK OR STP RANGE I CAN USE
    IN PLACE OF FQPF19N20C WHICH IS EASILY AVAILABLE
    IN MY AREA THANKING YOU

  • drmakangee Feb 05, 2009

    IS THERE NO OTHER EQUIVALENT FET THAT I CAN USE
    INSTEAD OF FQPF19N20C BECAUSE I AM REALLY STUCK
    AND BY THE WAY THANK YOU VERY MUCH SEEMS TO ME
    I HAVE COME TO A DEAD END.AS THE SUPPLIERS IN
    MY AREA HAVE NOT HEARD OF THIS PART
    THANKS

  • drmakangee Feb 05, 2009

    SOLUTION HELPFUL ONLY PROBLEM IS GETTING THE CORRECT
    SPARES. THANK YOU VERY MUCH

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9 Answers

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Manufacturer Part Number ---------FQPF19N20C.
Description -------------- MOSFET N-CH 200V 19A TO-220F.
Vendor ----------------Fairchild Semiconductor

MOSFET N-CH 200V 19A TO-220F - FQPF19N20C
Order 'mosfet n-ch 200v 19a to-220f - FQPF19N20C' online from Digi-Key. Manufactured by Fairchild Semiconductor. Digi-Key part number FQPF19N20C-ND.

Posted on Feb 04, 2009

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Hi.. u first check out the board completely
and replace the items which have got burnt,
make sure that u are replacing it with the
correct values,it willdefinitely.
This will solve ur problem.
thank u..

Posted on Feb 04, 2009

  • Hariharanath V Feb 04, 2009

    hi..try to change it with the correct values,

    it will definitely work.

    thanks..

  • Hariharanath V Feb 04, 2009

    hi..try it out with IRS950 MOSFET.

    this may be equivalent to FQPF19N20C

    MOSFET.This may solve your problem.

    thank u..

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Any one with THESE scecifications

Posted on Feb 04, 2009

  • blueextc3221
    blueextc3221 Feb 04, 2009

    FQPF19N20L should also work

  • blueextc3221
    blueextc3221 Feb 04, 2009

    No, the rest of the logic relies on the specs of that specific one!

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The resistors you need are is 27 ohms, 1 Watt, flameproof

Posted on Feb 04, 2009

  • machadojr_fe Feb 04, 2009

    To use different mosfets you will have to redesign the entire
    voltage regulation. You have to match everything up and position it
    all correctly. You will need to replace it with the same kind that you have now.

  • machadojr_fe Feb 04, 2009

    you need to replace it with the same or equivalent mosfet so you will need to call or email LG. Here is there contact info for you.

    Contact by E-mail: customerservice@lge.com

    Contact by Telephone Toll Free: 1 (800) 793-8896


    LG Electronics

    201 James Record Rd

    PO. Box 240007

    Huntsville, Alabama 35813


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Hi drmakangee,
If you are still able to see the colors of the resistors here is a color chart and calculator I use.
http://www.csgnetwork.com/resistcolcalc.html

This should help with Transistor ID:
http://electronics.wikia.com/wiki/Transistor

If you can please post a digital photo of the components so we can help with ID.
Lone99star

Posted on Feb 04, 2009

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shorted mosfet and transistor plus 4 burnt resisto - moz-screenshot.jpgmoshorted mosfet and transistor plus 4 burnt resisto - moz-screenshot-2.jpgclass=moz-screenshot-2.jpgQ702 : Value is VSTDTC114ES--RP
Q719: Value is VST2SB861C



Posted on Feb 04, 2009

  • 1 more comment 
  • Manoj Rout
    Manoj Rout Feb 04, 2009

    Go to this link for replacement procedures

    http://cardi.igeofcu.unam.mx/techdocs/Mo...

  • Manoj Rout
    Manoj Rout Feb 04, 2009

    My sincere advice to you would be to contact your service dealer before any replacement.


  • dtvjho
    dtvjho Jan 27, 2011

    Link is not working as of Jan 2011

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Hi,
the value of resistor is 0,27 Ohm/2W.......

Posted on Feb 04, 2009

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Check on circuit bord u found burnt part on that change that parts.

Posted on Feb 04, 2009

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I see if I can find schematics online, otherwise you will have to purchase the service manual.

Posted on Feb 04, 2009

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