RE: Startrek Sitdown questions

I've had someone mention the switching power supply thing to me before but I
don't understand exactly how to do it. Can you give me more details? I have
switching power supplies available but I'm not sure exactly which wire to
attach to which one, etc.

Any help would be appreciated.

Thanks
-Keith

        -----Original Message-----
        From: Ed Henciak [SMTP:ethst3+@pitt.edu]
        Sent: Wednesday, August 26, 1998 3:31 PM
        To: 'vectorlist@mcfeeley.cc.utexas.edu'
        Subject: Re: Startrek Sitdown questions

        Do not assume the monitor to be bad...do not go diving right for the
        monitor...Again...DO NOT ASSUME THE MONITOR IS BAD (I screwed up my
first
        deflection board bad for no reason...)

        They are correct....check all the wiring first. That was my
problem.
        Specifically, unbolt the game at the halfway point. Check the
connections
        there. You may have to fish around the little holes to pull the
molex
        connectors out. Start there and work your way back.

        Actually, the very first thing you should do is swap the original
supply
        with a switching PS. Save the original for audio amplification, but
use
        all the DC voltages from the switcher to power the boardset. Now,
you are
        going to need to get rid of the need of the AC voltage on the
        boardset...tie one end of R7 (I believe this is it) on the CPU board
to
        +5V on a 74LS IC near the resistor. That's it!

        Another thing, are you getting the nice Star Trek theme on power up?
If
        not, you may have something wrong with your sound or speech board,
or the
        boardset might no be running. Push that little red plunger down on
the
        CPU board...if it blinks on and off real fast, you're probably
OK...if it
        toggles or 'pulses out numbers', you have a problem with your vector
RAM.

        I cannot recommend enough switching out that crummy linear supply
and
        replacing it with a switching PS (John of John's jukes recommended
this to
        me). I like having all original games, but that PS is crummy.

        Keep us posted.

        Ed

        On Wed, 26 Aug 1998, Keith Sink wrote:

> Hi all,
> I just purchased a very nice looking SEGA Startrek cockpit cabinet
last
> night. It has no monitor activity when powered up however the fan
and the
> lights on the coin door come up.
>
> I was told by the previous owner that the game was working before
they moved
> it to it's present location. I'm hoping it's just loose wires. The
game came
> with two additional board cages with boards so I hope some of them
may be
> ok.
>
> Can everyone give me some suggestions on the steps they would go
through to
> determine the problems?
>
> Any experiences with similar situations would be helpful.
>
Received on Wed Aug 26 18:05:44 1998