Even if you can find the replacement part -- and unless you live in Southeast China that may be impossible, you will need several hundred dollars worth of SMT equipment to remove and replace the part(s).  Even then you have no way of knowing whether the part(s) you purchase are the only faulty ones, or whether they failed because of another issue.   Given that the entire system is worth perhaps $30-70 complete and working, it's just not worth repairing this one.  
Hello everyone, I previously made a post about this laptop ([URL] which was solved. But another problem popped up after not using the laptop for a while. The charger (I tried multiple known working ones) would just turn off. Also, the battery is not working. So there is no way to turn on the laptop without the charger. Also all the batteries I have tried will stop working in about 1-2 months. Is there a serious problem with the power supply? I've checked other posts, and they're saying that the screen, charging jack or other components could be causing a short triggering the charger to turn off to protect the laptop. I've already tried removing the RAM, HDD, Keyboard, even the trackpad and also tried resetting the CMOS, But to no avail. I know that this laptop is very old and probably is not worth the money and labour required to fix it, but this is my favorite laptop and I would really love to preserve it for a longer time. I'll try removing the screen next, but that's all I can do. What should I do next? Please help me with this. Thank You!
Another new problem on the Dell Inspiron 15 3521!