Re: Fair Radio HV modules

On Wed, 14 Jul 1999 11:41:08 -0500 (CDT), you wrote:

>"they ARE THE CINEMATRONICS
>HV UNITS! Part # is 82-11083-01. They are NOS!"
>
>Actually, they're not.
>They're PTKs, not Keltrons and they run a slightly lower voltage.
>The result is a dimmer image on the display.
>Also, the picture seems to "twitch", similar to the
>G05 with a bad HV rectifier.
>
>On the plus side:
>They use the same connector as the Cine monitor.
>They use the same pinout (even the same color code).
>For 12 bucks, if your supply is dead, any picture is better
>than no picture!
>
>I was planning on comparing the voltages, but I only
>got them in yesterday.

Cinematronics used two HV modules in production, one was the larger
gold anodized aluminum one by Keltron, the other was a smaller black
box with a couple of studs sticking out of it for mounting. Without
seeing a picture of it, I'm guessing these are the black box units?

The black boxes (I forget the name of the company, but I'm sure it's
mentioned in at least one of the later manuals, Solar Quest maybe?),
had a lower voltage output.

According to "Joe the Cine Tech" the monitors were originally designed
for the lower voltage black boxes. Someone in the company just ran
across the Keltron units (which were designed for some medical
equipment) and gave them a try. Since the lead time on the black
boxes was ridicules, and Keltron was much more eager to work out
problems with connectors etc, they used Keltron as much as possible,
switching to the black boxes when Keltron supplies were low.

There is some sort of adapter that plugs in between the molex
connector and the back box units. I've never torn off the shrink
tubing to see what's inside though it looks like some resistors.
Since I'm not sure what's in the adapter I'd be careful about directly
plugging one in where a Keltron was previously installed. If I can
find an adapter at home tonight (but I think everything is in
storage), I'll tear it up and see what's inside.

-Zonn
Received on Wed Jul 14 13:29:18 1999