Replace defective against screen flickering with Hyundai W241D

简介

My loyal screen Hyundai W241D caused me trouble some time ago.

As you can see in the video, at the bottom of the picture appear white lines, where everything should be black. The whole content of the screen is squeezed, what hurts in the eyes.

I read about that problem online in a forum, replacing defective capacitors can help. Because there are few costs connected with new capacitors I had to try that out.

Warning: Exercise caution when following this guide. Ensure capacitors are discharged.

视频概述

步骤 1 Detach the stand

Replace defective against screen flickering with Hyundai W241D, Detach the stand: 步骤 1 中的图像 1，1

Make sure the power supply is not connected and all cables are removed.
First things first: remove the stand. I use a wall mounting so it was already removed.

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步骤 2 Remove the back cover

Replace defective against screen flickering with Hyundai W241D, Remove the back cover: 步骤 2 中的图像 1，2

Replace defective against screen flickering with Hyundai W241D, Remove the back cover: 步骤 2 中的图像 2，2

Remove at the top and at the bottom 3 screws each

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步骤 3 Removing the cover

Replace defective against screen flickering with Hyundai W241D, Removing the cover: 步骤 3 中的图像 1，2

Replace defective against screen flickering with Hyundai W241D, Removing the cover: 步骤 3 中的图像 2，2

Pry the white cover out of the black frame. On the left and right side there are 5 little bumps (picture) snapped into little holes where you have to pry them out carefully.
Be careful of the wires for the speakers. It isn't that long.
Remove the connector of the speakers cable.

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步骤 4 Open the cover for the circuit boards

Replace defective against screen flickering with Hyundai W241D, Open the cover for the circuit boards: 步骤 4 中的图像 1，2

Replace defective against screen flickering with Hyundai W241D, Open the cover for the circuit boards: 步骤 4 中的图像 2，2

Remove the screws around the metal cover.

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步骤 5 Replacing the capacitors

Replace defective against screen flickering with Hyundai W241D, Replacing the capacitors: 步骤 5 中的图像 1，3

Replace defective against screen flickering with Hyundai W241D, Replacing the capacitors: 步骤 5 中的图像 2，3

Replace defective against screen flickering with Hyundai W241D, Replacing the capacitors: 步骤 5 中的图像 3，3

Ensure that the screen is unplugged long enough, so the capacitors are discharged.
Your new capacitors should be specified for 105°C (221°F)
On the right side of the picture you see the circuit board on which the capacitors to replace reside.
Capacitor (2) of type 330 µF / 16V
Capacitor (2) of type 470 µF / 16V
Capacitor (2) of type 220 µF / 25V
SMD-Capacitor (4) of type 100 µF / 16V
SMD-Capacitor (3) of type 47 µF / 16V