Re: Cinematronics monitor: no horizontal intensity?

Did you try replacing the 7406 chip on the monitor? In the newer monitors
it is in a socket. I've found this to be a common failure related to
inensity.

Matt

----- Original Message -----
From: "Gregg Woodcock" <woodcock@sisna.com>
To: <vectorlist@synthcom.com>
Sent: Thursday, March 27, 2003 11:17 PM
Subject: VECTOR: Cinematronics monitor: no horizontal intensity?

> I have a monitor in a Space Wars with a strange problem I can't wrap my
> brain around. I have perfect +/- Horizontal *deflection* as well as
perfect
> +/- Vertical deflection. All vectors are the proper size, position and
> shape. The problem is that the horizontal intensities are 0. Now I know
> there's no horizontal intensity; there's only a merged/vector intensity.
> But that fact is EXACTLY what is freaking me out! I know the problem is
in
> the monitor as I have another that works fine. If I can just figure out
HOW
> such a symptom might be generated, I'm sure I'll narrow in on it
> immediately. The problem is primarily lack of experience; I've only ever
> had *deflection* problems (never even HV on these guys). I just can't
> understand how I'd get an intensity issue only for horizontal when the
> intensity is a shared signal. For example, if I coin up 4:30, the display
> *should* look like this:
>
> | | --| |--|
> |--| : --| | |
> | --| |--|
>
> but instead looks like this where all horizontal lines look like dots on
the
> endpoints (maybe just 1 end):
>
> | | . | | |
> | | : . | | |
> | . | | |
>
> Additionally, it appears that whenever the vector has more VERTICAL than
> horizontal it has the proper intensity (as I recall Space War/s only used
> on/off, not high/low/off) but whenever the verctor has more HORIZONTAL
than
> verticale, the intensity is 0. Unfortunately all chips are socketed. Any
> ideas?
>
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Received on Fri Mar 28 11:09:11 2003