Hello all,
well, I finally made some progress here. I was lucky enough to be able to
receive a replacement HV multiplier from Sphere (Thank you Walter!) and
installed it today.
I don't have the vertical board installed yet, but the trace is the full
width of the reticule with the HV multiplier connected. It had no trace
before, except with the multiplier disconnected which showed a trace that
only was a part of the width of the screen. I had to remove the CRT to get
the HV lead out from underneath the tube.... what a nerve wracking
experience, but all went well thank goodness.
Hopefully I'll find some time this weekend to reinstall the vertical board
and get the old fella back in full working order.
Thank you all very much for the help!
Ian.
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On Wed, Jul 16, 2014 at 1:14 PM, Ian van der Neut <ivdneut@...> wrote:
Hello all,
in preparation of the HV components arriving from across the globe (free
shipping from Hong Kong, 7 euro to ship locally, what a world...) I thought
I'd read the service manual on the procedure to remove the HV multiplier in
the 465. It states that the CRT should be removed in order to remove the
multiplier. The only reason I can see on why this would be necessary is
because of the anode's plug connection on the other side of the CRT would
not fit through the gap below the CRT's shield when you pull out the wire
which is fixed to the multiplier. However, since I need to cut this wire
anyway, it should be possible to cut it at the multiplier first and pull it
out the other way right?
When refitting, is it ok to run the anode wire over the other side of the
CRT, so I don't have to squeeze it underneath, where there's a large copper
coil in the way? Using electrical tape to fix it to the CRT's protection
shield perhaps?
Thank you all for any guidance,
Ian.
On Tue, Jul 1, 2014 at 9:18 AM, Ian van der Neut <ivdneut@...>
wrote:
On Mon, Jun 30, 2014 at 9:47 PM, David davidwhess@... [TekScopes] <
TekScopes@...> wrote:
I would build the multiplier using air construction, coat it with corona
dope,
and then pot it inside a box made from card stock using beeswax or
paraffin. The
output lead can go right into the potting with some extra coatings of
corona
dope on that connection.
This is kind of the direction I was thinking too, didn't figure card
stock would be suitable, but I suppose it doesn't matter as soon as the
potting has hardened out.
I am not familiar with the characteristics of the various corona dopes.
Neither am I ;-)
Thank you very much.
Ian.
--
One man's "magic" is another man's engineering. "Supernatural" is a null
word.
-- Excerpt from the notebooks of Lazarus Long, from Robert Heinlein's
"Time Enough for Love"
--
One man's "magic" is another man's engineering. "Supernatural" is a null
word.
-- Excerpt from the notebooks of Lazarus Long, from Robert Heinlein's
"Time Enough for Love"
--
One man's "magic" is another man's engineering. "Supernatural" is a null
word.
-- Excerpt from the notebooks of Lazarus Long, from Robert Heinlein's "Time
Enough for Love"
