Hello everyone,
so another broken LCD found its way on my workbench and I take the opportunity to dig into analyzis and learn something in the progress.
Unfortunately I could not find a service manal for this device, but at the moment I am not even sure that schematics would be much help.
When I power up the set the screen stays dark. I can see that the backlight lights up but there is no picture on the screen.
I suspect that this is either an issue with the t-con or with the panel itself.
To rule out one or the other I detached the cables of leading from the t-con to the panel one by one. With the left cable removed I get half a picture for a short time, before it turns into just some gray lines.
I attached pictures that show the individual stages of startup.
With the right cable removed and only the left connected one side stays white, the other black.
I read that when you get half a picture with one cable removed it is likely that the disconnected side of the panel is bad. However I am not sure if this is the case here because the other side does only hold the picture for a couple of seconds.
Is it worth hunting down a replacement T-con?
Anything else I could test to narrow down the root cause?
Best regards
Kolja
so another broken LCD found its way on my workbench and I take the opportunity to dig into analyzis and learn something in the progress.
Unfortunately I could not find a service manal for this device, but at the moment I am not even sure that schematics would be much help.
When I power up the set the screen stays dark. I can see that the backlight lights up but there is no picture on the screen.
I suspect that this is either an issue with the t-con or with the panel itself.
To rule out one or the other I detached the cables of leading from the t-con to the panel one by one. With the left cable removed I get half a picture for a short time, before it turns into just some gray lines.
I attached pictures that show the individual stages of startup.
With the right cable removed and only the left connected one side stays white, the other black.
I read that when you get half a picture with one cable removed it is likely that the disconnected side of the panel is bad. However I am not sure if this is the case here because the other side does only hold the picture for a couple of seconds.
Is it worth hunting down a replacement T-con?
Anything else I could test to narrow down the root cause?
Best regards
Kolja
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