Re: Tempest foldover on right side

If its bothersome, you could try replacing the relevant chassis deflection transistor, i've seen that before. Tempest unfortunately will force the monitor to display vectors way, way outside the visibile screen area, later romsets IIRR have a fix for this. Even if your monitor can produce a full image, certain parts of the game will overdrive the deflection such that the transistors will partially break-down, causing other areas of the screen to show foldover like this.

Its not clear if your boundary is inside or outside the real screen limit anyway without a photo. you should set the test mode pattern up to fill your screen then watch it in game, is the foldover inside this box?

I'd replace the relevant chassis transistor first with a new one then observe... Changing the romset to a later revision might also help, but this is much more laborious, and is ignoring a weakness in your monitor anyway.

Andrew Welburn
www.andys-arcade.com
  ----- Original Message -----
  From: Kevin Moore
  To: vectorlist@vectorlist.org
  Sent: Tuesday, December 15, 2009 6:53 PM
  Subject: VECTOR: Tempest foldover on right side

  I've noticed that Tempest has a slight foldover when the player finishes a level, and the tube starts coming up. The left side the tube lines go infinity for lack of a better word, but the right side seems to fold over like hitting a wall, and it creates a straight line. Typically I just adjust the picture so that the monitor shroud covers this. Is this normal?

  Thanks,

  Kevin

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Received on Wed Dec 16 03:43:26 2009