On Fri, Apr 4, 2025 at 04:47 PM, H EA4IIF wrote:
Could the solder joint have gone bad on its own?
Yes, by time, by changing temperature or after some mechanical pressure.
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And check please also solder joint from T401 towards IC402 pin 7 for QMX Rev. 1 or pin 9 for later revisions.
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73 Ludwig
