Is Hisense tlm26e0 1 whiteboard a logic board when there is no signal? When there is a signal, the image is blurred and the logic board is connected to the screen.

General fault judgment is as follows:

1. Screen to check the lvds connection cable. Generally, the connection at the interface is loose or wet, and the chip is broken.

2. When adjusting the monitor, the menu is garbled, and the main chip or memory is replaced.

Changhong, Konka and other models have the problem of this kind of screen logic board: the DC-DC circuit of the white screen is not good, which can be solved by replacing the DC-DC circuit. Key problems can be solved without changing the board. You must conclude that the fault part is that this board is broken. The screen power supply is 5V, and the voltage around 25V is 0, which is a white screen.

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