The cheapest dimmer control boards think that when we get a board for repair, the first thing we do is take a closer look at how it looks. If the circuit board is burnt, be sure to carefully check whether the power supply circuit is normal before powering on the circuit board, and then power on after ensuring that it will not cause secondary damage. The observation method is a kind of static inspection method to observe whether the circuit board is artificially damaged.

　　The cheapest dimming control board is recommended mainly from the following aspects:

　　1. For the cheapest dimming control board, check whether the circuit board has been dropped, resulting in deformation of the board corner, or the chip on the board has been deformed or broken.

　　2. Observe the socket of the chip to see if it is forcibly broken due to lack of tools.

　　3. The cheapest dimming control board is to observe the chip on the circuit board. If it has a socket, first observe whether the chip is correct. This is mainly to prevent the operator from inserting the chip in the wrong position or direction when repairing the circuit board by himself.

　　4. The cheapest dimming control board feels that if the circuit board has a short-circuit terminal, observe whether the short-circuit terminal is correct. The maintenance of the circuit board requires a solid theoretical foundation, careful and serious work, and through the careful observation of the maintainer, sometimes the cause of the problem can be judged at this step.