What reason is caused Dead lights of LED point light source lamp？ For details, see below.
The leakage current of LED point light sources are caused by excessive PN junction failure.In generally LED chips are injury by static electricity, the PN junction LED chip failure, leakage current increases,the LED light source will turn into a resistance, this usually does not affect the LED point light source and other work. which generally does not affect the work of other LED point light sources.Prevent electrostatic damage to electronic components, is a very important work of the electronics industry, LED packaging, application of the enterprise must not be taken lightly.  Any one part of problem, will cause damage to the LED light source, LED light source to the bad performance or even failure.LED spot light lamp wiring open solder joints causing death.LED point light source connection solder joint make Dead lights by Open circuit of light.Internal connection wire of LED point light source is disconnected,resulting in the death produced when not have current inflow of the LED lights, this situation will affect the normal work of other LED light source, the reason is the low voltage operation of LED light source, the general should use string, parallel to join, to adapt to different operating voltages, More series of LED light source draw the influence of LED light source series.can use a weld method In such a situation,Will not bright LED light source with a lighter LED lead is heated to 200-300 ℃， remove the lighter, with 3-volt button batteries connected LED by positive and negative,  if LED light source can be light, but with the lead temperature reduced By the light turns the not bright, which proves that LED point light source is weld.the reason of Heating can light is based on the principle of metal thermal expansion and contraction, elongation and internal solder connected with the expansion of LED lead when heated, when the power is switched on, the LED point light source can be a normal lighting.The two way cause of Dead lights phenomenon of LED point light source lamp. But only to comply with the using rules of LED point light source, the above two phenomena can be avoided.