I encountered an issue with a TCL LCD TV model L32F11, where the screen displayed a faulty pattern as shown in the images. The processing screen line was not working properly, and the display was integrated with the logic board. After checking the DC/DC voltages on the logic board and confirming they were normal, I suspected that the screen parameters might have been altered.
To access the bus data, I followed a method similar to the one used in later models from TCL. In the TV's active state, I pressed the menu button and navigated to the image settings. When the cursor stopped at the "contrast" option, I quickly entered 9-7-3-5 within three seconds. This brought up the bus menu, but no specific adjustment options were available for the screen settings. After several attempts, I discovered a workaround and want to share it with others who may face the same problem.
The process involved entering the bus menu, then using the remote control's up/down buttons to navigate to "DesignMenu1," and pressing the right button. This displayed a picture menu on the right side of the screen. From there, I selected "ProjectLD." It turned out that the model listed didn’t match the actual TV model. I pressed the left button to change the number to "034," which changed the menu to "ProjectLD034/L32F11." After this adjustment, I turned the TV off and on again, and the image returned to normal.
Fault LOGO
Fault phenomenon
Bus factory menu
Press the button to DesignMenu1
Press the right button to show this menu and select ProjectLD
At this point, it was clear that the model did not match the original
Change the number to 034/L32F11/CN
Press the remote control’s standby button and power on again to return to normal
[attachimg]382354[/attachim ]
Joined signal, image OK
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