LED为什么工作了几周就会烧坏呢?
我们的客户把电源插进去，从慢慢变化到一点都不能工作，从一闪一闪的到烧尽，工作仅仅几周就烧尽？有人知道原因吗?谢谢!
温度太高吧。。。 知不知道是 LED 烧毁, 还是电子线路烧毁?
是否过热?
慢慢变化是什么意思? H-RH 发表于 2013-8-3 16:09 static/image/common/back.gif
知不知道是 LED 烧毁, 还是电子线路烧毁?
是否过热?
慢慢变化是什么意思?
It has been brought to my attention that the LED bulbs in the LED2Z are burning out. They range from; not working at all once customer plugs in, to flickering then burning out, to working only a couple of weeks then burning out? Please notify supplier of issue. Garret was helping a customer that had issues with the bulbs so he requested the customer to send us their samples. I have taken photos (attached) of a returned bulb and a bulb we know that works.
以上客人的原文描述.
过热，元器件饱和工作？ ljb9960 发表于 2013-8-3 16:11 static/image/common/back.gif
It has been brought to my attention that the LED bulbs in the LED2Z are burning out. They range fr ...
LED2Z 有没有特别意思 ?据你的客人描述, LED blub 一开始便有问题, 只是在数周后才完全坏掉! They range from; not working at all once customer plugs in, to flickering then burning out, to working only a couple of weeks then burning out? 这种仿流明的LED垃圾货很多的，到底是驱动电源的问题还是LED的问题拿到样品一测便知。个人觉得灯珠有问题的概率会高一点:curse: 电源恒流输出不稳定，看不到电流结构不好说
电路中元器件余量不足或者耐压（此处不指安规那个耐压）量不够都会有问题，具体还要你们电子工程师去分析，或者你把驱动板子贴出来看看 散热不好，最多光衰比较严重，不至于几周就烧坏。可能是电流（需考虑电源）过大烧坏晶片导致，还有是不是存在短路情况？从ＰＣＢＡ来看，ＬＥＤ是烙铁焊上去的，工艺太差了。 会不会是打耐压导致其内部有伤残点。
页:
[1]
2
