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Re: Just bought an Apple II - and now the questions.
If the JCS is a true monitor, you do not need the modulator. Is there a
female RCA jack labeled "VIDEO" on the monitor? If so, connect a
male-to-male RCA phono cable from the Apple II+ video output to the JCS
video input.
If you do need the modulator, then the modulator probably needs power. Do
you have a wall-wart power supply? Is there a power supply jack on the
modulator? If the modulator is connected inside the Apple II near the game
port, then it is receiving power from the Apple II.
Test the monitor alone. Connect it to a VCR and see the really really bad
flesh tones.
Connect the Apple II to a VCR video input and see if that works.
At this point I am trying to see if the problem is the Apple II, the
monitor, or the modulator.
--
Paul R. Santa-Maria
Ann Arbor, Michigan USA
paulrsm@ameritech.net
Asu <loobilla@banana.fana.com> wrote:
>
> The computer is an Apple II plus.
>
> It is connected to a monitor which is a "JCS" 12" green monitor, made
> by KAGA DENSI Co. It can get turned on, a red light comes on at the
> front, with adjusting contrast and intensity the screen becomes
> greenish.
>
> The computer is connected to it via a flat rectangular box, about 3x5
> inches, it is called an ASTEC Video Modulator Model #UM1381. It has 2
> toggle switches: one with 2 settings: "Modulator" and "TV Antenna" and
> onother one for "Channel 3" and "Channel 4". The output of this box is
> connected to a "75 Ohm to 300 Ohm" widget that was used with TV's in
> the old ages to connect the antenna cable I guess (?). I tried all
> possible switch combinations to no avail.
>
> There is a red led on this box which is NOT on.
>
> I tried the control-reset trick and the following happens: the computer
> beeps, the drive named HD2 spins down and its led goes out. (HD1 never
> seems to turn on but when I turn off the computer its led flickers
> briefly). So it seems the machine does what it is supposed to do
> (transfer control from the drive to the ROM (?) but there is a problem
> with the display.
>
> Any ideas as to how to fix it?