# SPOT THE FLAW: Sometimes, the problem is the neighborhood

**URL:** https://sierraconnect.protoexpress.com/t/spot-the-flaw-sometimes-the-problem-is-the-neighborhood/4434
**Category:** PCB Design Challenges
**Created:** [September 2, 2026, 8:46pm UTC](https://sierraconnect.protoexpress.com/t/spot-the-flaw-sometimes-the-problem-is-the-neighborhood/4434 "2026-09-02T20:46:54Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![lucy.sierracircuits](https://sea2.discourse-cdn.com/sierraconnect/user_avatar/sierraconnect.protoexpress.com/lucy.sierracircuits/32/8_2.png) [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)
#### Post date: [September 2, 2026, 8:46pm UTC](https://sierraconnect.protoexpress.com/t/spot-the-flaw-sometimes-the-problem-is-the-neighborhood/4434/1 "2026-09-02T20:46:54Z")

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![flaw](https://global.discourse-cdn.com/sierraconnect/original/1X/2eaca0bc12cd4cb1c34a03d9ba0b2e3aebdcd126.png)

Answer on Friday…

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<div class="post-metadata">

### Author: ![lucy.sierracircuits](https://sea2.discourse-cdn.com/sierraconnect/user_avatar/sierraconnect.protoexpress.com/lucy.sierracircuits/32/8_2.png) [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)
#### Post date: [September 4, 2026, 6:26pm UTC](https://sierraconnect.protoexpress.com/t/spot-the-flaw-sometimes-the-problem-is-the-neighborhood/4434/2 "2026-09-04T18:26:05Z")

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Answer: Coupled lines too close causing crosstalk.