On Nov 14, 1:40*pm, Rich Grise wrote:
Michael A. Terrell wrote:
CaveLamb wrote:

And interesting essay.
But will people buy products designed to be repaired?

http://consumerist.com/2010/11/the-s...ectronics.html

One comment states:
"Things like LCD panels themselves are simply impossible to repair,
period. It'd be like repairing the inside of an old-fashioned CRT. Isn't
gonna happen."

* *Then no one ever rebuilt picture tubes?

I've never heard of it done. Have you?

Three kinds of rebuild:

(1) the cathode could be 'outgassed' aka 'rejuvenated' (just a bit
of overheating, and it made the tube a bit brighter for a while).

(2) the innards could be re-welded. Tektronix, it is said, got a
$50k industrial laser, and on its first day in operation reworked
enough storage-scope electrodes by welding through the glass
envelope, to repay the full investment. There were also
techniques for adjust-using-gravity then spotweld by applying
high current to the external wires.

(3) the neck can be sawed off and a new electron gun
spliced in. Sounds drastic, but replacement electron guns for
(for instance) electron microscopes are a common maintenance item.