Hello All,
I've been lurking in the group, on and off, for years. That's been fun,
thanks!
I have a collection of old 500 series scopes and plugins that I collected
about 15 years ago at hamfests. It's time to get 'em working. My current
project is a 541 which is just about good to go.
Here I'm cutting new fan mount rubbers from an old flip-flop:
.
Here's a snapshot of the output of a pulser plugin at 0.02 microsecs per
division:
I've been going at this 541 for a while... I broke a wafer in the sweep
speed switch while replacing the big black beauty holdoff cap. I managed
to fix the switch, but that involved removing the front panel so I could
remove the CRT envelope to get at the switch.
But the worst... I washed the scope with water and dishwashing soap, but
then neglected to dry it out sufficiently before powering it back on.
Things were fine for a day or so, but eventually the CRT filament winding
in the main transformer shorted. Took me a while to debug that, but we're
back up now with a nicely bodged-in filament transfomer:
The next problem is vertical wanderings from the plugin, due to leaky caps
I imagine. I already replaced the black beauties. So now I need to rewind
the high voltage winding in my EICO 950B capacitor tester so I can properly
test the caps.
My previous project was rebuilding the fan in my 2465. Here I am turning a
new oilite bushing for the fan:
.
-- Trey
Trey Greer