This happened out of no where. Wondering if it's a panel issue? Before I dive in and take it apart
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Re: Mitsubishi LT-52148 LCD - white picture with lines
Hmm possibly mainboard fault here. Take it apart and get some images
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Re: Mitsubishi LT-52148 LCD - white picture with lines
Do you have IR control and sound?Willing to help but I'm no expert.Comment
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Re: Mitsubishi LT-52148 LCD - white picture with lines
It does have sound, no remote for it to tellComment
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Re: Mitsubishi LT-52148 LCD - white picture with lines
check the LVDS with an oscilloscope and turn the menu on and off all the time. If you see changes on your scope, it's not the main board.Comment
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Re: Mitsubishi LT-52148 LCD - white picture with lines
Don't have an oscilloscope but it only shows a distorted picture with an input. The menu displays crystal clear even volume, input source etc. Would that mean it's a tcon issue or?Attached FilesComment
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Re: Mitsubishi LT-52148 LCD - white picture with lines
Ok this has a "system reset" button so I tried pressing it to see what would happen and now it's displaying a picture normal.
What's up with that? It does have some random lines going down as shown in that pic. Not sure if that indicates a panel fault?Comment
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This was my main TV for the last 6 years. I'm not inclined to throw out a $2600 TV so quickly so I'm trying to investigate the issue.
Problem
TV was disconnected from power for 6 months during construction. When I plugged it yesterday picture was fine, after 30 seconds it dimmed then started developing horizontal lines, picture then starts to ghost vertically until it degrades into vertical streaks. TV always displays a perfect picture when cold. I can unplug TV for 5 minutes and plug it back in and picture is restored for 20 seconds. I can also keep it in standby mode... -
This "free from a friend who was going to recycle it" SONY BRAVIA XBR-55A8H arrived with the bottom center RED LED repeating a four flash pattern. It was treated with kid gloves and was reported to have "just gone dead" and the OLED panel has no dents in the metal frame or cracks.
Thread https://www.badcaps.net/forum/showthread.php?p=1091829 helped in proceeding as follows:
1) Unplugged, then plugged set in while holding the remote VOL- and Power to factory reset.
2) Waited 30 seconds, then pressed remote Power button and "Select language"...01-30-2023, 05:01 PM -
5.5 year old 85 inch Sony Bravia X950G started showing gray horizontal lines across the bottom of the screen and the picture shifts slightly vertically when it happens. The lines sometimes get bigger/smaller vertically and bounce back. See the video for the problem. It seems to be happening after it warms up after an hour or so. Happens regardless of source. Right now there's nothing but power cable connected and it's happening. We did hook up a new Nintendo Switch to our HDMI switching receiver today, and played for a while with no issues, but this problem didn't occur til a few hours later while...
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as above shows coloured lines then slowly goes down and repairs the picture on start up if been on for a while then turned off its fine anyone had this...09-10-2025, 12:13 PM -
Hello everyone,
I was trying to fix the monitor, which was giving me the following pictures:
It was somehow reactive, such that if I pressed the buttons, the lines changed in positions or if i moved e.g. a task window, it would somehow change the patter, too.
I swapped out the mainboard without any luck. So I thought that it has to be an issue with the panel itself and was trying to assess whats wrong on the control board of the panel.
Somehow, I managed to short the LVDS protection with a MOSFETS cooler on the PCB.
I turned around...09-09-2025, 08:27 AM
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