Bug #600

Internal short between LED+ and RST#

Added by Andrew Kohlsmith over 4 years ago. Updated over 4 years ago.

Status:FeedbackStart date:03/18/2015
Priority:NormalDue date:
Assignee:Andrew Kohlsmith% Done:

80%

Category:-
Target version:-
Duration:

Description

I guess I didn’t do the DRC with all layers on and ignored Eagle’s “2 errors on hidden layers” warning.

The LED+ and RST# signals are shorted on layer 15 right at the LCD connector, and a via is too close to the LED+ trace on the same layer.

picture8-1.png (73 KB) Andrew Kohlsmith, 03/18/2015 05:01 PM

picture964-1.png (312 KB) Andrew Kohlsmith, 03/18/2015 05:42 PM

picture964-2.png (448 KB) Andrew Kohlsmith, 03/18/2015 05:42 PM

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History

#1 Updated by Andrew Kohlsmith over 4 years ago

  • Status changed from New to Resolved
  • % Done changed from 0 to 100

Resolved in commit:84af1ee.

#2 Updated by Andrew Kohlsmith over 4 years ago

  • Status changed from Resolved to Feedback
  • % Done changed from 100 to 80

#3 Updated by Andrew Kohlsmith over 4 years ago

#4 Updated by Andrew Kohlsmith over 4 years ago

The fix is easier than I suspected.

1. cut the trace between P$8 and the via that is shorting RST# to LED+

2. Install 1k pulldown resistor between pin 14 (RST#) and 16 (GND) of J1

3. Do not populate pulldown resistor R3

That’s it!

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