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1. 01:00 PM - Re: COM radio failure (Robert L. Nuckolls, III)
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| Subject: | Re: COM radio failure |
At 04:50 PM 9/1/2021, you wrote:
>>Bob,
>>
>>You answered my question about my inoperative GX65 a couple
>>of weeks ago. It came back from repair with the failed
>>component (taped to the chassis) that looks like a small
>>capacitor, not surface mount. It has burn marks on the side,
>>I can't imagine how I missed it when I looked over the boards
>>with a 3X loupe. If I sent it to you, (and where would I
>>send it?) could you possibly identify how this could have
>>failed? I'm assuming that the radio now works, I have
>>not installed it yet.
Got a chance to look over the fried capacitor you
sent. Yes, the darkened condition is strong evidence
of failure (shorted leading to overheating).
This style of tantalum chip capacitor is almost
vintage . . . very early package style that was
replaced with a more robust configuration. Yes,
it's a surface mounted part. That little pigtail
is not the remnant of a lead-wire.
I suspect that the replacement part was a
more modern design but yeah, this was quite
probably root cause of the radio failure.
Bob . . .
Un impeachable logic: George Carlin asked, "If black boxes
survive crashes, why don't they make the whole airplane
out of that stuff?"
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