这篇文章终于进入最后两个步骤了，感谢大家长时间的支持呀，特别那些锲而不舍一直追看的筒子们！遗憾的是由于外文网站，很多视频都没办法分享了，大家都懂的就不解释啦。话说到翻译版，最近是没办法更新了，忙着毕业，呵呵~好了，进入本连载的“大结局”啦~

Step 71Hardware debugging: Broken LEDs

Disaster strikes. A LED inside the cube is broken!

We had a couple of LEDs break actually. Luckily the hardest one to get to was only one layer inside the cube.

To remove the LED, just take a small pair of needle nose pliers and put some pressure on the legs, then give it a light touch with the soldering iron. The leg should pop right out. Do this for both legs, and it's out.

Inserting a new LED is the tricky part. It needs to be as symmetrical and nice as the rest of the LEDs. We used a helping hand to hold it in place while soldering. It went surprisingly well, and we can't even see which LEDs have been replaced.

Step 72Feedback

We love getting feedback on our projects! The 4x4x4 LED cube has received a ton of feedback, and many users have posted pictures and videos of their LED cubes.

If you follow this Instructable and make your own LED cube, please post pictures and video!

Oh, and don't forget to rate this Instructable if you liked it :)

As a token of gratitude for all the great feedback, here is a collage of some of the feedback on our 4x4x4 LED cube instructable: