Robin Szemeti <[EMAIL PROTECTED]> wrote:
> [...] which if you know the meaning of 'valves' and 'direct EHT' (which
> resulted in the tv chassis being at mains potential ) then thats a pretty
> scary thought
(whimpers slightly.)
I've got this old SVGA monitor of 1993 vintage, a Commodore 1960. I'm
particularly attached to it not because it's any good, but because it's
particularly crap in one particular area. Modern monitors aren't crap enough
so don't suit the application that I keep this nasty raster gun for (i.e. so
I can see what Amigas are doing, and yet have a high res display.)
The power switch finally broke after many years of manhandling. As it
happens, a friend's monitor of the same make has packed in completely and I
received a jiffy bag which appeared to be a letterbomb on first appearances,
but turned out to be a load of salvaged spares as well as a service manual.
This bastard has bitten me before when working inside the chassis, and I
reckon it's going to have a go at me again when I attempt to replace the
switch from the bag of spares. If I don't make it to the next meeting,
that's because I've just killed myself with 25kV.
I don't recall working on stuff that had tubes beyond the CRT itself, and I
don't think I've ever encountered stuff with a live chassis. What was the
technical reason for running the case at anything other than earth potential
anyway? Unlike cars, it can't be because the thing might rust, surely?
