From: black.hole.4.spam{at}gmail.com (Don Hills)

In article ,
black.hole.4.spam{at}gmail.com (Don Hills) wrote:
>
>Assuming they last that long. I've just been up a ladder changing one of the
>two CFLs here in the study. It lasted about a year. A good quality 23 watt
>GE one, with an 8000 hour rating. I noticed that the plastic body was
>discoloured from heat, as was its fixture-mate which was still operating.

I performed a post-mortem on the failed lamp. On cutting through the joint
between the two halves of the plastic case, the tube assembly fell off in
my hand. The wires from the circuit board to the tubes had corroded
through. The reason was obvious: the tubes were fastened in with
"corrosive brown glue". This is a type of glue that used to be
popular back in the 80s for fastening electronic components in place. It's
white when applied, but heat gradually turns it brown and breaks it down
into a corrosive (and somewhat conductive) substance that corrodes metals
like the liquid from a leaking battery does.

--
Don Hills    (dmhills at attglobaldotnet)     Wellington, New Zealand
"New interface closely resembles Presentation Manager,
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