Re: cinematronics monitors

Thanks for the info.. yes I have a pile of atari bw vectors. I put one from a battlezone in the AA and it looks far better than even the second crt I had tried. For the Star Castle I just went straight to a new crt. It looks ok but still too much seperation in the intensity between the lower and higher. I'll rebuild everything anyways...

--- On Sun, 5/31/09, William Boucher <boucher@mnsi.net> wrote:

> From: William Boucher <boucher@mnsi.net>
> Subject: Re: VECTOR: cinematronics monitors
> To: vectorlist@vectorlist.org
> Received: Sunday, May 31, 2009, 7:52 PM
> Rest assured that when everything is
> working properly, all levels of brightness for the vectors
> are very visible and quite sharp.  If you are having
> problems with focus and with setting the brightness levels,
> I suspect that your high voltage supply box is needing some
> rework.
>
> The HV supply has several outputs.  First is a 90 VDC
> that feeds the brightness circuit.  Next is a 400 VDC
> that controls focus.  Next is 16 kV for the
> anode.  I would suspect C31, C33, C34 but I suggest a
> full re-cap of the Keltron HV box.
> See my parts list here http://www.biltronix.com/arcade_electcomp_01.html#Star_Castle_Monitor_Keltron_HV_box
> If you have the skills to install a cap kit, then you can
> order the parts listed here and rebuild your HV box. 
> While your at it, why not rebuild your chassis also. 
> There's a list for that also right below the HV list.
>
> Check these pages out:
> http://www.biltronix.com/star_castle_3.html
> http://www.biltronix.com/star_castle_4.html
> http://www.biltronix.com/star_castle_5.html
>
>
> Be aware that there was a run of bad Amprex CRT's used on
> Star Castle. Check the label on the back of the CRT. 
> If it is Sylvania, you're okay.  If it is Amprex,
> you're probably screwed.  It's possible too that your
> Armor Attack now has a monitor that was originally shipped
> in a Star Castle so check them both.
>
> Also, check the wires that run from the CRT socket. 
> You see those fat things molded around the wires about
> mid-length?  Those are resistors and they usually go
> bad.  Their value is not really critical.  In my
> Star Castle, I replaced them all with 1k 1/2W axial
> resistors and covered them with about 3 layers of heatshrink
> tubing.  I've never had a problem with them since.
>
> Also, in case this will help, Atari games such as
> Asteroids, Asteroids Deluxe, and Battlezone use the same CRT
> type and they are directly interchangeable so if you have an
> old GO5-801 monitor lying around, you can use that tube.
>
>
> William Boucher
> ----- Original Message ----- From: "andre" <livnfree_can@yahoo.com>
> To: <vectorlist@vectorlist.org>
> Sent: Sunday, May 31, 2009 1:42 PM
> Subject: VECTOR: cinematronics monitors
>
>
> >
> > Got my first 2 cine games.. a Star Castle and an Armor
> Attack. Both had extremely dim monitors even though cranked
> up full on the brightness. I swapped in a different crt on
> the AA (start on that one first) and got the brightness
> back. But vectors were very out of focus. So I slowly turned
> down the brightness until the bright vectors are clear and
> in focus.. trouble is, at that point all the low intensity
> vectors are too dim to be seen. I get a 'sorta' happy medium
> where I can see the low ones, but the bright vectors are not
> crisp enough for my liking. is this the way these always are
> or should I try a new crt? The crt I just tried out is
> another used AA one.
> >
> >
> >     
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Received on Mon Jun 1 09:44:31 2009