Re: WG6401 swap

Jeffrey Matthews wrote:
> Hi;
> I'm putting together an Aztarac project and since acquiring the
> WG19K6401 med res monitor seems to be an act of futility, I am now
> looking at the possibility of swapping a med res Amplifone set in it's
> place.
> Thanks to David Fish who had posted the input specs for the 6401, it
> seems that I might have a chance, although the display would be a
> little smaller than that of the 6401, it might just work.
>
> The reason for this post is to get opinions as to the validity of my
> theory.
>
> The 6401 specs are:
> "X" full deflection 8V P/P (+4V to -4V) 15 inches
> "Y" full deflection 6V P/P (+3V to -3V) 11.25 inches
>
> The Amplifone specs are:
> "X" full deflection 16V P/P (+8V to -8V) 15 inches
> "Y" full deflection 12V P/P (+6V to -6V) 11.25 inches
>
> As you can see, the voltage requirement for full deflection of the Amp
> is exactly twice that of the WG and the ratio of "X" voltage to "Y"
> voltage remains the same. Taking this into consideration, would it be
> possible then, to just substitute the Amp in it's place without fear
> of negative physical consequences to the PCB or monitor?
>
> I understand that the display area using the Amp set would be
> approximately half of what it would be using the 6401 but could it not
> be adjusted, although slightly, utilizing the "X" and "Y" size pots
> on the PCB?
>
> Taking it a step further, would it be possible to actually modify the
> PCB, by replacing components, to output twice the voltage levels or is
> that taking it too far?
>
> I'm still searching for the actual WG19K6401 manual as well as the
> monitor itself, if anyone has any leads, they would be greatly
> appreciated!
>
> Thanks
> Jeff M.
>
Hi Jeff,

I for see no problems with trying the setup as you have outlined. Can
not see any risk to the board, nor the monitor - you are, if anything,
under driving the monitor so the image would at best be smaller.

Let us know the results!

I was thinking that using my rasterhack and a 19" ega monitor (I have
about six or so left) with some kludging (interfacing Vector for Raster
deflection) of the deflection may work, but doubt the image would be
true...if I only had time!

John :-#)#

-- 
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Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames)
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