# SPOT THE FLAW: Look beneath the package

**URL:** <https://sierraconnect.protoexpress.com/t/spot-the-flaw-look-beneath-the-package/4357>\
**Category:** PCB Design Challenges\
**Created:** [August 12, 2026, 4:21pm UTC](https://sierraconnect.protoexpress.com/t/spot-the-flaw-look-beneath-the-package/4357 "2026-08-12T16:21:07Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![rahuls](https://sea2.discourse-cdn.com/sierraconnect/user_avatar/sierraconnect.protoexpress.com/rahuls/32/9_2.png) [@rahuls](https://sierraconnect.protoexpress.com/u/rahuls)\
**Post date:** [August 12, 2026, 4:21pm UTC](https://sierraconnect.protoexpress.com/t/spot-the-flaw-look-beneath-the-package/4357/1 "2026-08-12T16:21:07Z")

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![image](https://global.discourse-cdn.com/sierraconnect/original/1X/07eb1e2c1765597dd631157d520cc26a71655c44.jpeg)

Answer on Friday

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<div class="post-metadata">

**Author:** ![rahuls](https://sea2.discourse-cdn.com/sierraconnect/user_avatar/sierraconnect.protoexpress.com/rahuls/32/9_2.png) [@rahuls](https://sierraconnect.protoexpress.com/u/rahuls)\
**Post date:** [August 14, 2026, 5:55am UTC](https://sierraconnect.protoexpress.com/t/spot-the-flaw-look-beneath-the-package/4357/2 "2026-08-14T05:55:04Z")

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Answer: Traces running under BGA pads