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Problem Record Details for STEREO-WOA661002-002
Stage: PR 		Date/Time Submitted: 04/05/2004 14:14
Project: STEREO
Submittor Info:
Name: Larry Gibb
Code: 300.0
Phone: +1 301 286-0213
Email: lgibb@pop400.gsfc.nasa.gov 		Spacecraft: STEREO Ahead Spacecraft (STEREO-A)
Subsystem/Instrument: IMPACT
Component: HET
Date/Time of Actual Problem: 04/05/2004 10:00 Assembly: [left blank]
WOA#: WOA661002 Event/Operation Line Number: 80
Configuration Type: Flight Item Number: 2053415
Item Revision: - Serial Number: 2
Software Version: N/A  
Problem Description:
HET Flight Electronics Assembly: During removal of a tempory commercial Actel (U200) several pads (29) were lifted. A flight part was initialy installed and removed, followed by inspection of the pads prior to installation of the commecial part. The commercial part was being removed so that a new flight part could be installed. All of the pads listed below are lifted at the heel end of the pad for approximately 1/4 to 1/3 of the pads length. The apparent cause was the use of scissors on leads that were still soldered to the pads. As the scissor snipped the leads the pads lifted and rotated away from the tool. Pad position numbers followed by a "t", (7) are for pads that have traces attached to the lifted areas: 4t, 5, 8, 9, 13, 21, 23, 25, 27, 28t, 30, 31, 34, 37t, 40t, 42t, 67, 142, 161, 167, 171, 174, 179, 182, 187t, 193, 195, 197 and 199.
Problem Addendum 1 (by Larry Gibb on 04/05/2004 14:17):
Only 6 pads have lifted traces, not 7.
Problem Addendum 2 (by Larry Gibb on 04/06/2004 13:13):
Add pad position number 63 to the list of lifted pads raising the total number of lifts to 30.
Required Approvals for Closure: (One signature(s) required from Project Side (minimum role PDL) AND One signature(s) required from QA Side (minimum role QE)
Fields with a gray background were hidden by the project at the time this PR/PFR was submitted.
[Active Project Revision,Revision PR was created in] = [1,1]
Attachments:
inspection of HET board.txt (attached by L.Gibb on 04/06/2004 13:16)
STEREO HET images.doc (attached by L.Gibb on 04/06/2004 13:20)
jumper wires needed on HET FM 2.txt (attached by L.Gibb on 04/06/2004 13:52) 


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