Good afternoon,
A couple of months ago, I picked up this TV for $25 because it wouldn't turn on. The owner said it was sitting in storage for a year, during which the issue developed. I thought it a good upgrade to my ST50 plasma since it's a 4K HDR TV capable of passive 3D. It's a near top-of-the-line model for 2015 (although this one was manufactured in Feb 2016 right before it was replaced) and is very thin thanks to a bottom-lit panel.
I got it to turn on by re-pinning a connector so that the BL-ERR pin went to ground. However, this left another problem. The TV will turn on and function fine, but one small chunk of the 188 LEDs has no light output. Furthermore, if the backlight brightness is above 5, about 6 larger sections will cycle on and off over the course of about 1.5 seconds.
Here is a video of the symptoms: https://youtu.be/1cvbHpUJaU4
I have been using it for the past couple of months with the brightness turned down on all inputs, including in HDR mode. However, when 3D mode is activated, the brightness is pinned at 50 and will not go down. I decided enough was enough since I've been at this for 6 months and not watched a 3D movie in my own home. I ordered replacement backlight strips on eBay and installed them.
The new strips are not exactly the same as the old ones, but they went in fine and the TV powered on. Nevertheless, the issue persisted in exactly the same way. I ordered a replacement LED controller board, and installing that today also had no effect. At this point I'm not sure what is causing the issue and am wondering if anyone else has insight into what might be next up for replacing. Is there something between the LED controller board and the light strips?
A couple of months ago, I picked up this TV for $25 because it wouldn't turn on. The owner said it was sitting in storage for a year, during which the issue developed. I thought it a good upgrade to my ST50 plasma since it's a 4K HDR TV capable of passive 3D. It's a near top-of-the-line model for 2015 (although this one was manufactured in Feb 2016 right before it was replaced) and is very thin thanks to a bottom-lit panel.
I got it to turn on by re-pinning a connector so that the BL-ERR pin went to ground. However, this left another problem. The TV will turn on and function fine, but one small chunk of the 188 LEDs has no light output. Furthermore, if the backlight brightness is above 5, about 6 larger sections will cycle on and off over the course of about 1.5 seconds.
Here is a video of the symptoms: https://youtu.be/1cvbHpUJaU4
I have been using it for the past couple of months with the brightness turned down on all inputs, including in HDR mode. However, when 3D mode is activated, the brightness is pinned at 50 and will not go down. I decided enough was enough since I've been at this for 6 months and not watched a 3D movie in my own home. I ordered replacement backlight strips on eBay and installed them.
The new strips are not exactly the same as the old ones, but they went in fine and the TV powered on. Nevertheless, the issue persisted in exactly the same way. I ordered a replacement LED controller board, and installing that today also had no effect. At this point I'm not sure what is causing the issue and am wondering if anyone else has insight into what might be next up for replacing. Is there something between the LED controller board and the light strips?
...
Comment