Re: cinematronics monitors

Usually, it's the tube....

On Sun, May 31, 2009 at 6:52 PM, William Boucher <boucher@mnsi.net> wrote:

> 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_boxIf 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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>
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Received on Sun May 31 21:19:00 2009