samsung odyssey g3 problem

[lauvest]

my samsung odyssey g3 monitor wont go to 144hz and has some wierd lines horizontally when it starts but they go away after a few hours of it being on. and btw windows allows it to go to 144hz mode but when i put it on the screen goes black and only a few rows of pixels go on at the top of the monitor. anyone have any fixes for this or am i now in lookout for new monitors. left an image of what i mean.

ps im using a display port cable. thanks in advance!

[Robchil]

3 hours ago, lauvest said:

my samsung odyssey g3 monitor wont go to 144hz and has some wierd lines horizontally when it starts but they go away after a few hours of it being on. and btw windows allows it to go to 144hz mode but when i put it on the screen goes black and only a few rows of pixels go on at the top of the monitor. anyone have any fixes for this or am i now in lookout for new monitors. left an image of what i mean.

ps im using a display port cable. thanks in advance!

is it separating itself?..  if you press on it at the top does it show normal? 

 

[lauvest]

On 5/4/2023 at 12:47 AM, Robchil said:

is it separating itself?..  if you press on it at the top does it show normal? 

 

im not sure what you mean by pressing it but i can see my cursor on it 

 

[Robchil]

3 minutes ago, lauvest said:

im not sure what you mean by pressing it but i can see my cursor on it 

 

that the panel is delaminating so the light panel in the back shines through on the top.. is the line permanent? 

 

if you see the panel.. but it's just not dark anymore it probably is.. due to age the tape dries up and looses grip. 

 

that it goes away after a few hours are probably panel heating up expanding and closing the tiny gap that let's light through in the start. 

 

[lauvest]

On 5/5/2023 at 4:38 PM, Robchil said:

that the panel is delaminating so the light panel in the back shines through on the top.. is the line permanent? 

 

if you see the panel.. but it's just not dark anymore it probably is.. due to age the tape dries up and looses grip. 

 

that it goes away after a few hours are probably panel heating up expanding and closing the tiny gap that let's light through in the start. 

 

it only goes into this black mode when i enable 144hz in windows this does not happen in 60hz mode in 60hz mode it only has some small flickering lines at the top and bottom of the screen

 

[Robchil]

3 minutes ago, lauvest said:

it only goes into this black mode when i enable 144hz in windows this does not happen in 60hz mode in 60hz mode it only has some small flickering lines at the top and bottom of the screen

 

G3 is not new.. i have a G7 bought two years ago. now G9 is out i think. 

over time electronic components fails.. if it's past warranty i would replace it. 

failure can also be a bad contact on the system board inside.. called cold solder point..  a badly connected solder point that looses connection over time, but hard to say as i have not troubleshot that device.

or a bad chip that fails when it swaps to 144hz. or both.. 

have you tried upgrading firmware? i had to upgrade mine after a windows update.. as i saw the left half on the screen in the center of the monitor at 240hz HDR.. anything else worked normal. 

[ArcturuzTV]

On 3/5/2023 at 12:22, lauvest said:

mi monitor samsung odyssey g3 no funciona a 144 hz y tiene algunas líneas extrañas horizontalmente cuando se inicia, pero desaparecen después de unas horas de estar encendido. y, por cierto, Windows permite que vaya al modo de 144 Hz, pero cuando lo pongo en la pantalla, se vuelve negro y solo se encienden unas pocas filas de píxeles en la parte superior del monitor. alguien tiene alguna solución para esto o ahora estoy buscando nuevos monitores. dejó una imagen de lo que quiero decir.

ps estoy usando un cable de puerto de pantalla. ¡gracias de antemano!

I have the same problem, when I try to use it at 120hz with my xbox series x it only works at 60hz through the HDMI port, the problem appeared from one moment to another.

did you manage to solve it?

greetings.

[BoagsBugger]

I have the exact same problem. I was using the computer and all of the sudden, screen started to go black. Now It won't work on any setting higher than 60hz. It only shows a few lines of active pixels on top, just like the picture. Even at 60hz it shows faint horizontal lines moving up and down the screen. From what I could gather researching online it's a failure of the T-Con portion of the board. I do not know what that means, but I know I am never getting anything Samsung again. Less than two years of mild use and this thing is bound for the landfill. 

 

Update - I pulled the thing apart and got to the board. Found used replacements on ebay, new ones on AliExpress, which I suspect are actually replicas. Dunno if they work, but I think I'll give a try.

Search for HKCMNT MST91A4Q1-T

Edited June 3, 2024 by BoagsBugger
Update

[BoagsBugger]

I tried installing a brand new board from AliExpress. It works exactly like the OEM one, which is to say the problem persists. It still does not work on any setting above 60hz, and even at 60hz and below, it shows horizontal ghost lines moving up and down the screen. Never getting another smasnugg monitor again.