What to do if the shop signs is not bright？

The store signs suddenly does not light up,which is quite a loss for the merchant, people are relying on the advertising signs at night to distinguish the store, if the store signboard can not shine, and do not want to spend money to repair，the following teaches you how to deal with the light source brightness problem of store signs：

The font of the glowing signs part is not bright，check whether the light signs corresponds to the switching power supply and the switching power supply working indicator is normally on, and then check whether the switching power supply input line is short-circuit breakpoint, and check the switch power supply output line interface, parallel position and terminal post position.

The font is partially not lit，the reason may be damage to the internal LED module or damage to the exposed lamp beads, or it may be a break point or short circuit at the outlet and connection port.

The shop signs is not lit overall，indicate that it is a problem with the main line, or a problem with the switching power supply,main line problem, first consider whether the power supply is normal, check whether the main line and switch are closed or damaged, check whether the terminal post is false or ignited, check whether the line has a break point short circuit phenomenon, the indicator light does not light up after power supply, indicating that the switching power supply is damaged and replaced; after power supply, the indicator light is on, and the fan does not rotate, the switching power supply needs to be replaced.