Введение

This is a television/PC monitor that did not work after a storm. I expected to replace a few capacitors, but it only needed a single diode at the cost of twenty-nine cents and about an hour of labor. A new power board for this TV would have cost somewhere around $80.

This is the LG 17LX1R that will no longer turn on.
  • This is the LG 17LX1R that will no longer turn on.

  • Remove the cover from the stand by.

    • Press down on the two tabs. The cover should come off easily.

    • Remove the four screws that hold the stand assembly to the chassis.

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Remove the four Phillips head screws that attach the stand to the chassis.
  • Remove the four Phillips head screws that attach the stand to the chassis.

  • Remove the eight Phillips screws that hold the back to the chassis. Once the screws are removed, the back will simply snap off.

  • Remove the metal shield. It is fastened with six Phillips screws.

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  • After the shield is removed, the power board and the main board are visible.

    • Power Board

    • Main Board

    • Fuse

  • Check all capacitors for blown tops and/or leakage.

  • Thoroughly inspect the boards. Brown discoloration around Diode D102 is evidence of a short circuit, possible blown component.

  • Disconnect all connectors from the power board

    • Remove the four screws that mount the power board to the chassis.

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  • These are the chassis with the power board removed.

  • Discoloration of the back side of the power board is a sign of a faulty diode.

  • Unsolder the diode from the power board.

    • Replacement diode

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  • Here is the removed diode. Description on the diode reads LT526 IN4007.

  • Solder the new diode onto the power board. Use a pair of tweezers or hemostat to hold the diode in place while soldering.

  • Once the diode is replaced, clean the board with isopropyl alcohol to get rid of any debris or old flux.

Include many telivisions and user manual

Raz Media - Ответить

  • Device powers on and has audio and video after the repair.

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Заключение

To reassemble your device, follow these instructions in reverse order.

26 участников успешно повторили данное руководство.

oldturkey03

Участник с: 29.09.2010

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Комментариев: 2

Very nice good job

Bhullana - Ответить

good job my frend

youcef - Ответить

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