Re: Star Wars Video Problem - weak colours

You have to look at the diagnostics screen for the brightness setups for all the colours.....If both boards sweep nicely and linearly for all colours , then cool.... Yes, Boards may vary a litttle.....

You have to rememember you are in the analogue domain here...... As for Linearity.... this is a WG6100 and not an amp.... There is deffo some barrel distortion... the camera angle doesn't help.....

Red looks like it needs turning up for a start..... Check out the brighness steps for all colours in the diagnostics for both boards.... That should tell you what you need to know.....;-)

You have done well so far...... I've seen odd Z problems with Battlezone before now.... did not fade out linearly.... was an easy fix.... logic ic.....

Regards, Col

  ----- Original Message -----
  From: Andrew Welburn
  To: vectorlist@vectorlist.org
  Sent: Thursday, September 27, 2012 10:29 PM
  Subject: Re: VECTOR: Star Wars Video Problem - weak colours

  You must remember that every game Pcb needs to be matched to the monitor you are viewing it with. I can see that your linearity is also out as well as your colours in that video.

  The rule is, that you can't expect every vector Pcb output to be the same, they all drift a bit after all these years.

  Andrew Welburn (mobile)
  www.andys-arcade.com

  On 27 Sep 2012, at 20:36, Gavin Benson <gavin.benson@gmail.com> wrote:

    Hi

    I have 2 working Star Wars pcbs.

    One of them plays perfectly with nice vibrant colours and no other problems but the other pcb shows weak colours, particularly noticeable on the tie fighter fire. Also when the Death Star explodes the left side when it is a red set of circles it is only partially displayed. The chassis transistors have been recently replaced and the voltages are good.

    Here is a video link:

    http://youtu.be/3-3JA5iFXYE

    Has anyone got any ideas, could it be the AVG chip?

    Thanks

    Gavin

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Received on Thu Sep 27 18:32:45 2012