Why is my tv turning up volum to 100%

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LG Television

Repair guides and support for your LG TV.

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Fredrik Helle Erland @fredrikhel35864

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投稿日: 2023年11月1日

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Why is my tv turning up volum to 100%

Hi.

Was wondering if there is a fix or whats causing this:

I have a Lg 55sj950v that suddenly started to turn volum up to 100%, everytime i manage to turn it down, it turns volum up again to 100% after a few seconds.

Also all menu's scroll to the left.

I have disconnected all things connected to the tv.

Tried removing battery from the remote control and any other controllers.

Tried to factory reset tv. Took a long time before it finaly let me, cause of the scrolling to the left.

Beside this the tv works fine

Any fix or what's causing this would be much appreciated:)

Regards Fredrik

Here are two videos if i did it correctly:

Here are some pictures:

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@fredrikhel35864 Are there any physical buttons or joysticks on the TV that might be causing this issue?

Andrew S さんによる2023年11月2日

Ops was in a rush so posted it twice xD :

Yes, the manual says it got some kind of joystick function, i have never used that.

There are 5 physicsl buttons on the tv,

iv only tried using these after the issues started.

Before writing here i read somewhere online about LG Tv and some joystick issue, but nothing worked so i was wondering if it was something else.

Nothing i did with the physical buttons made it go away, and i never used those buttons before this happen, so would be strange if the button on the tv would be stuck?

Fredrik Helle Erland さんによる2023年11月2日

@fredrikhel35864 Stuck buttons on the TV could be possible, but let's take a look at the remote first. Open the camera app on your smartphone and switch it to selfie mode or use a dedicated camera or computer webcam. Put batteries into the remote and point it at the camera so the front of the remote is in view. Do you see a violet light coming from the front of the remote in the camera when no button is pressed? Do you see a violet light in the camera when you press a button?

Andrew S さんによる2023年11月3日

I see a violet light when when i push buttons.

No violet light is comming from the remote when nothing is pushed.

Tv is turning volume up to 100% and scrolling to the left, even if there is no batteries in the remote.

Fredrik Helle Erland さんによる2023年11月3日

@fredrikhel35864 In that case, either the joystick/buttons are faulty or there is a problem with the main board. Can you take the back off the TV and upload pictures of the circuit boards (including the circuit board(s) the buttons/joystick are on)? iFixitでの質問に画像を追加する方法

Andrew S さんによる2023年11月3日

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@fredrikhel35864 Are there any physical buttons or joysticks on the TV that might be causing this issue? — Andrew S
Ops was in a rush so posted it twice xD :

Yes, the manual says it got some kind of joystick function, i have never used that.

There are 5 physicsl buttons on the tv,

iv only tried using these after the issues started.

Before writing here i read somewhere online about LG Tv and some joystick issue, but nothing worked so i was wondering if it was something else.

Nothing i did with the physical buttons made it go away, and i never used those buttons before this happen, so would be strange if the button on the tv would be stuck? — Fredrik Helle Erland
@fredrikhel35864 Stuck buttons on the TV could be possible, but let's take a look at the remote first. Open the camera app on your smartphone and switch it to selfie mode or use a dedicated camera or computer webcam. Put batteries into the remote and point it at the camera so the front of the remote is in view. Do you see a violet light coming from the front of the remote in the camera when no button is pressed? Do you see a violet light in the camera when you press a button? — Andrew S
I see a violet light when when i push buttons.

No violet light is comming from the remote when nothing is pushed.

Tv is turning volume up to 100% and scrolling to the left, even if there is no batteries in the remote. — Fredrik Helle Erland
@fredrikhel35864 In that case, either the joystick/buttons are faulty or there is a problem with the main board. Can you take the back off the TV and upload pictures of the circuit boards (including the circuit board(s) the buttons/joystick are on)? iFixitでの質問に画像を追加する方法 — Andrew S

oldturkey03 @oldturkey03 評価: 784.7千 1.1千 894 2.3千 · Answer 1 · 2023-11-04T19:27:47-07:00

oldturkey03 @oldturkey03

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894

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投稿日: 2023年11月4日

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@fredrikhel35864 yes, most certainly looks like a stuck button/joystick or a bad button board. PITA because it is a mounted TV but I do not think there is any other way to fix this.

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@fredrikhel35864 glad that a new button board got it working again. Hope it wasn't to expensive :-)

Repair is War on Entropy.

oldturkey03 さんによる2023年11月21日

I got a free lg tv with a broken screen that i took the board from.

Wasen't the same board that i had, but everything is working as it used to:)

Fredrik Helle Erland さんによる2023年11月22日

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bill @ruggb 評価: 4千 3 4 · Answer 2 · 2023-11-11T17:18:32-07:00

bill @ruggb

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投稿日: 2023年11月11日

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The volume increases with the up button and the menu scrolls with the right button. There is either a short in those buttons or cable, or the control circuit is malfunctioning. Try disconnecting any cable coming from the on board buttons, since you have eliminated the remote buttons. If it still does it, it is the control ckt.

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I will try this. Is it enough to unplug it in one end? Or should i just unplug the entire thing?

I'm always afraid i will forget how things were connected xD

Fredrik Helle Erland さんによる2023年11月12日

Looks like the cable for the buttons are same cable as wifi bracket

Fredrik Helle Erland さんによる2023年11月12日

Pull it anyway. you don't need the WiFi to test it. However, it might disable other things, but that is part of the process - unless you want to start over with a new TV.

bill さんによる2023年11月12日

After unplugging the button board/ wifi bracket the controller to the tv cant't connect to tv anymore.

Because of this its hard to see if the volume still goes up or if the scrolling is still there

Fredrik Helle Erland さんによる2023年11月13日

what can you not control with it unplugged?

Can you not turn the TV on?

If it is on, can you not see the screen?

If it is too dark can you not turn the brightness up?

detail is important

bill さんによる2023年11月13日

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