VECTORLIST - The Mailing List For The Technical Discussion of Vector-Based Arcade Games

April_2001
Re: VECTOR: Safe to run XY PCB w/ monitor disconnected?


From: Mark E Davidson ( )
Date: Thu Apr 19 2001 - 22:40:24 CDT


Ok I Have a question now On the page
http://www.geocities.com/SiliconValley/Horizon/2253/vectors.html
It states
>>The first thing you MUST do is to desolder/clip the outputs (pin 3) of the 7815
(VR3) and >>7915 (VR1) regulators away from the PCB. If you do not, they will get
HOT and be >>destroyed!
 This is just because the page author was feeding the board 12 volts rather then
10, Right? or Am I missing something? Why would anyone really need to do all that
hacking to put a display up on a scope?

-=Mark=-

Rod Spade wrote:

> Bret Pehrson wrote:
> >
> > Specifically with Atari -- Star Wars and Major Havoc, is it safe to run the
> > PCB with the monitor completely disconnected or can it cause problems?
> >
> > I'd like to work on the games using a scope for the output, and disconnect
> > the monitor (at least the power) until I get the boards working correctly.
> >
> > The reason I ask:
> >
> > http://www.geocities.com/SiliconValley/Horizon/2253/vectors.html
> >
> > indicates that the regs output needs to be clipped.
>
> I think he just did that so he could use an alternate power supply for
> the board - but I'm certainly not an expert.
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