In long-term use, rainproof switch power supplies may encounter some problems to varying degrees. So, how should we handle these common switch power supply problems correctly? Jiangmen rainproof switch power supply will introduce us to several common problems and related knowledge of handling rainproof switch power supply.

1. The fuse is blown

One of the common problems in daily use is that the fuse of the rainproof switch power supply is blown. When encountering this problem, we should pay attention to checking whether there is a burnt condition in the circuit board components (you can also ask if there is a burnt smell). We can also use a multimeter to check whether the resistance of the power input terminal is less than 200K (if it is less than 200K, it indicates a short circuit condition at the back end);

2. Poor load capacity

It is easy to encounter poor load capacity on some long-term and old switching power supply products. When encountering this problem with rainproof switching power supplies, we can use a multimeter to check whether there is a problem with the current limiting resistor and diode high-voltage filtering capacitor, and then carefully check whether there is virtual soldering or circuit disconnection at various connections on the circuit board;

3. Voltage output or unstable output without DC voltage

When encountering this problem, we should first check whether the electronic components of the high-frequency transformer are damaged, and then check whether the output DC voltage is normal (if the output DC voltage is 0, it indicates that there is a problem with the control circuit);

4. The fuse is intact, but there is no DC voltage output

The occurrence of this problem indicates that the rainproof switch power supply is in an inactive state (or protective state), and we need to check whether the main control chip is damaged, etc;

5. The cooling fan is not working

If this problem occurs, we need to check whether the rainproof switch power supply itself or the transistor is faulty. If the transistor is intact, then it must be a problem with the cooling fan itself.

Article source: Jiangmen rainproof switch power supply http://www.gddpdz.com/