Re: starhawk problems

Found this little tid bit searching the vector list. If that doesn't work, I
might have a spare or two.

Kevin

RE: LF13331N questions

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From: Tom McClintock
<tomm_at_mgcap.com<tomm_at_mgcap.com?Subject=RE:%20LF13331N%20questions>
>
Date: Tue Jun 11 2002 - 16:09:28 EDT

Pins 5 and 12 are your +/- 15V inputs, so I would start
with the regulators, and work you way back to the power
supply before replacing the LF13331 switch.

Rodger was kind enough to come up with a (relatively
inexpensive) replacement for the chip.

-------------
Yup, it's an obsolete part. It's getting hard to find.
 How about
making your own?

If I had any ambition I'd be making these myself and
selling them to
anyone that wants them. But someone else can do that,
not me.

You will need an IC socket and a not-the-best analog
switch IC such as a
DG212, DG202, or MAX332. (Something with a similar
on-resistance to the
LF13331 and can handle the power supply voltage).

Put the IC UPSIDE DOWN on the IC socket. Pin 1 of the
IC socket will be
pin 8 of the IC and vice versa. Solder it to the
socket. Trim off the
extra pin length.

Now plug it into the game. Pin 1 of the SOCKET plugs
in to the pin 1
position of the game (you might want to paint a dot on
the IC (pin 1 of
socket, pin 8 of IC).

The disable pin of the LF13331 no longer works on this
retrofit, but
according to Cinamatronics schematics it isn't used
anyway.

Well, at least it sounds good in theory. Perhaps
someone some day will
give it a try. (I don't have games any more).

-----------

On Tue, 11 June 2002, "Mills, Lewis" wrote

*> *

On Sat, Apr 16, 2011 at 6:09 AM, vernimark <vernimark@vernimark.com> wrote:

> Yes I’ve a space wars... do you know where to buy an LF13331?
>
>
>
> DAC80s are soldered, I’ll try to remove them without any damage
>
>
>
> Thank you,
>
> vernimark
>
>
> ------------------------------
>
> *From:* owner-vectorlist@vectorlist.org [mailto:
> owner-vectorlist@vectorlist.org] *On Behalf Of *Rich Marquette
> *Sent:* sabato 16 aprile 2011 13.03
> *To:* vectorlist@vectorlist.org
> *Subject:* RE: VECTOR: starhawk problems
>
>
>
> Based on the picture, I would think that the problem is in the monitor
> itself. Probably in one of the digital parts of it (DACs or Analog switch)
> Do you have another Cinematronics vector game you can put the CPU board
> into?
>
> You could try swapping the two DAC chips around on the monitor and see if
> the picture changes.
>
>
>
> Rich
>
>
>
>
>
> *From:* owner-vectorlist@vectorlist.org [mailto:
> owner-vectorlist@vectorlist.org] *On Behalf Of *vernimark
> *Sent:* Saturday, April 16, 2011 6:01 AM
> *To:* Vectorlist
> *Subject:* VECTOR: starhawk problems
>
>
>
> Hi All,
>
> after a long time I’m trying to continue with my star hawk project; it is
> almost complete with the ecception on the most important part: PCB J
>
>
>
> this is what I see:
>
> http://www.vernimark.com/temp/starhawk01.jpg
>
> star ships are complete when fly on the top-left quarter of the screen but
> then lose some vectors moving on the bottom-right. Sounds are ok.
>
> background is incomplete as shown in the picture.
>
> The game works, I can insert coins and play with one or two players
> selecting different speeds.
>
> Do you have any idea?
>
> On your opinion is it a PCB problem or board problem?
>
> Thank you,
>
> vernimark
>
>
>
>
>
>
>
>
>
>
>

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Received on Sat Apr 16 08:28:33 2011