How to clean PCB

After the circuit board dust cleaning.

The electrolytic capacitor on the circuit board capacity sampling, such as found that the electrolytic capacitor capacity is less than 20% of the nominal capacity, should be replaced, the life of the general electrolytic capacitor should be replaced for about 10 years, to ensure the working performance of the circuit board.

For the high-power components coated with heat dissipation silicone grease, check whether the heat dissipation silicone grease has dry solid, for the dry solid, remove the dry solid heat dissipation silicone grease, coated with new heat dissipation silicone grease, to prevent the high-power components in the circuit board from burning out due to poor heat dissipation.