Re: SW monitor prob...

From: Chris Loggans <cloggans_at_yahoo.com>
Date: Wed Apr 06 2005 - 17:37:09 EDT

Did you try adjusting the image size on the game
boards?

Thanks,
-Chris

--- Pinx <pinx.32@tesco.net> wrote:
> It is in focus,
> just a really large image so some of the image is
> off the screen....
>
>
> Pinx
>
> ----- Original Message -----
> From: "Thad Seeberger" <maddthad@jlab.org>
> To: <vectorlist@vectorlist.org>
> Sent: Wednesday, April 06, 2005 9:15 PM
> Subject: Re: VECTOR: SW monitor prob...
>
>
> > Is the image focused? if its focused (DURING
> BLOOM) you have XY drive
> > problem. Check the focus block you could have
> something leaky make sure
> > there is no corona. When measuring the HV is it ok
> while blooming (loaded)
> > or with no drive. If its fluctuating there is a
> problem with the
> > regulator. If its bllooming because of HV drop you
> will loose focus also
> > since the focus is just a divider of the HV. Make
> sure there is no DC
> > offset on XY input. I havent been following this
> thread so you might have
> > already checked but I cant think of what else
> would make it bloom other
> > than a CRT with low emision, is the heater got
> 6.3V on it? and all the
> > connections good on the socket such as cathode,
> heater, focus etc. It
> > definately sounds like a regulation problem. I
> would buy the repacement HV
> > kit from arcadeshop. I've installed a few of them
> and I think they are
> > well worth it.
> >
> > Thad
> >
> >
> > Pinx wrote:
> >
> >> Right,
> >> now i am really baffled, not only have i
> re-capped it but now i have
> >> replaced the transistors at Q901, Q902, Q903,
> Q904 and replaced the
> >> Zeners at ZD900, ZD901, ZD902. I have also
> replaced the resistors at
> >> R912, R920, R922, R925.
> >> I put my HV probe in with the monitor switched
> on and set the HV to
> >> 19500V and still the image on the screen is
> massive !!!
> >> Starting to pull my hair out now (not that ive
> got much) any more idea's
> >> anyone ? Should the HV be measured with the game
> pcb unplugged ?
> >> Pinx
> >> ----- Original Message -----
> >> *From:* Pinx <mailto:pinx.32@tesco.net>
> >> *To:* vectorlist@vectorlist.org
> <mailto:vectorlist@vectorlist.org>
> >> *Sent:* Friday, April 01, 2005 7:36 PM
> >> *Subject:* VECTOR: SW monitor prob...
> >>
> >> Hi guys,
> >> just recently the WG in my SW has developed
> a problem where the
> >> image is massive, so you cant see it all on
> the screen. I have
> >> been told this is "blooming" and so i have
> just re-capped the HV
> >> section, but i still have the problem. Is
> there anything else on
> >> the HV board i should replace to cure this
> problem ?
> >> TIA
> >> Pinx
> >>
> >
> >
>
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> problems to
> > chris@westnet.com
> >
>
>
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Received on Wed Apr 6 17:37:11 2005

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