Re: G05 tube ground question

You could try moving where the ground strap touches the aquadag OR
adding additional strapping.

"Curtis H. Wilbar Jr." wrote:
>
> Re: aquadag...
>
> Check out:
>
> <A HREF="http://www.marmoset.net/radio/howto/aquadag/">
> http://www.marmoset.net/radio/howto/aquadag/
> </A>
>
> Now I'm wondering if the aquadag coating is breaking down on my
> Joust, as when that monitor is turned on after being off for a
> day or so, it crackles a lot, and if looking at the monitor from
> the back, you see blue sparcs for a second (which I wonder if
> it is a sign that the aquadag is damaged or breaking down in those
> spots).
>
> -- Curt
>
> >X-Sent: 3 May 2002 15:01:10 GMT
> >Date: Fri, 03 May 2002 10:02:00 -0500
> >From: tom mcclintock <tomm@mgcap.com>
> >X-Accept-Language: en
> >MIME-Version: 1.0
> >To: vectorlist@synthcom.com
> >Subject: Re: VECTOR: G05 tube ground question
> >Content-Transfer-Encoding: 7bit
> >
> >I was wondering this myself. I have a couple of G05s that had been
> >sitting outside for many years, and the tubes are clean and shiny with
> >no trace of aquadag. They seem to work though... SHould I expect some
> >sort of failure eventually?
> >
> >
> >tm
> >
> >kegowland@cs.com wrote:
> >>
> >> If the DAG is not attached correctly or not present, would this cause an
> effect of the picture being out of focus? I have two WG 6100's that display an
> image but after a few moments the image is fuzzy, like looking through a frosted
> window. I tried different HV and deflection boards and get the same result.
> >>
> >> Kirby
> >>
> >> John Robertson <pinball@telus.net> wrote:
> >>
> >> >The 'aquadag' coating on the outside of the picture tube must be connected
> >> >to the monitor chassis common for the tube to charge up correctly...it is
> >> >only a giant glass capacitor after all, a few ufd at 20Kv...you can use a
> >> >spring if you like, but it must make a good contact to the tube coating and
> >> >cover a few square inches. A better solution is to get a piece of braided
> >> >wire and run it across the rear of the tube with a spring to keep the braid
> >> >from touching the yoke. Then solder a jumper wire that can be either
> >> >soldered or screwed to the chassis common.
> >> >
> >> >John :-#)#
> >> >
> >> >At 08:08 PM 02/05/2002 -0400, Curtis H. Wilbar Jr. wrote:
> >> >
> >> >
> >> >>Had this embedded in a longer post... so for those that have seen it
> >> >>sorry for the duplication, however I think some people may not have seen
> >> >>it because it was embedded in a longer post...
> >> >>
> >> >>My Electrohome G05-801 (Asteroids) metal "strap" used for groudning
> >> >>the monitor tube is rotted off (found a piece of it in the bottom of the
> >> >>game).
> >> >>I don't see a wire floating around, but I assume that this strap is used
> >> >>for grounding the back coating on the monitor tube.
> >> >>
> >> >>What are the issues with this not being grounded...
> >> >>I've seen some monitors (like amplifone) use a spring to ground that
> coating
> >> >>to the monitor frame. Would that be one way of rectifying the rotted
> >> >>off strap ?
> >> >>
> >> >>Thanks in advance,
> >> >>
> >> >> -- Curt
> >> >>
> >> >>
> >> >>
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Received on Sat May 4 11:01:17 2002